| File Extensions |
Description |
M |
A |
Modified |
Index |
| #00 | Autochop File Part | . | M | 1.00.00 | 232 |
| #01 | Autochop File Part | . | M | 1.00.00 | 232 |
| #02 | Autochop File Part | . | M | 1.00.00 | 232 |
| #03 | Autochop File Part | . | M | 1.00.00 | 232 |
| #nn | Autochop File Part | . | M | 1.00.00 | 232 |
| $$$ | DOS Pipe File (Unknown Source) | . | L | 1.05.00 | 501 |
| 0 | Hacha Split File | . | M | 2.17.00 | 1173 |
| 000 | MS Search System Index | . | M | 2.18.00 | 661 |
| 000 | Trend Micro Pattern File | . | M | 2.17.00 | 2518 |
| 0000 | Journey To The Center Of The Earth Archive | . | M | 2.15.00 | 632 |
| 001 | Symantec Norton Ghost Disk Backup | . | M | 2.19.04 | 2847 |
| 00? | Raima Arcserve Database | . | M | 2.14.00 | 1218 |
| 1 | InstallShield 3.x Archive | . | M | 2.15.00 | 334 |
| 1 | Setup Information File Index | . | M | 2.06.00 | 1322 |
| 123 | Lotus 123 Ver. 3 & 4 Worksheet | . | M | 2.07.00 | 105 |
| 123 | Lotus 123 Worksheet (MacBinary) | . | M | 2.16.00 | 2483 |
| 12M | Lotus 123 Ver. 3 & 4 Worksheet | . | M | 2.07.00 | 105 |
| 1PE | TurboTax Form (1) | . | M | 2.15.00 | 928 |
| 1PH | TurboTax Form (1) | . | M | 2.15.00 | 928 |
| 2GR | MS Windows 3.x Screen Grabber | Y | H | 2.03.10 | 222 |
| 2IMG | Apple Emulator 2IMG Disk Image (General Format) | . | M | 2.23.00 | 3199 |
| 2IMG | ASIMOV2 Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3204 |
| 2IMG | Bernie ][ the Rescue Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3203 |
| 2IMG | Catakig Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3200 |
| 2IMG | Sheppy's ImageMaker Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3201 |
| 2IMG | Sweet 16 Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3202 |
| 2IMG | XGS Apple IIGS Emulator 2IMG Disk Image | . | M | 2.23.00 | 1476 |
| 2MG | Apple Emulator 2IMG Disk Image (General Format) | . | M | 2.23.00 | 3199 |
| 2MG | ASIMOV2 Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3204 |
| 2MG | Bernie ][ the Rescue Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3203 |
| 2MG | Catakig Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3200 |
| 2MG | Sheppy's ImageMaker Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3201 |
| 2MG | Sweet 16 Apple Emulator 2IMG Disk Image | . | M | 2.23.00 | 3202 |
| 2MG | XGS Apple IIGS Emulator 2IMG Disk Image | . | M | 2.23.00 | 1476 |
| 386 | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 290 |
| 3D2 | Stereo CAD-3D Objects Graphics Image | . | M | 2.17.00 | 654 |
| 3DA | Crystal Decisions 3D View Angles | . | M | 2.13.00 | 2190 |
| 3DB | 3D Mark Database | . | M | 2.15.00 | 2342 |
| 3DM | Cadent 3D Model | . | M | 2.15.00 | 2343 |
| 3DM | Rhino 3D Model | . | M | 2.14.00 | 2282 |
| 3DMF | Corel Dream 3D Metafile | . | M | 2.07.00 | 1461 |
| 3DMF | QuickDraw 3D Metafile | . | M | 2.14.00 | 655 |
| 3DMF | Rhino 3D Model | . | M | 2.14.00 | 2282 |
| 3DS | 3D Studio 3.0 Image | . | M | 2.17.00 | 2525 |
| 3DS | Ray Dream Studio Native Data Format | . | M | 2.11.00 | 2006 |
| 3DX | 3DX Image | . | M | 2.18.00 | 2620 |
| 3G2 | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| 3GG | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| 3GP | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| 3GP | 3GPP Multimedia File (MacBinary) | . | M | 2.16.00 | 2097 |
| 3GPP | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| 3GPP | 3GPP Multimedia File (MacBinary) | . | M | 2.16.00 | 2097 |
| 3GPP2 | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| 3GPP2 | 3GPP Multimedia File (MacBinary) | . | M | 2.16.00 | 2097 |
| 3GR | MS Windows 3.x Screen Grabber | Y | H | 2.03.10 | 222 |
| 3MM | 3D Movie Maker Movie | . | M | 2.17.00 | 2519 |
| 3TF | Crystal Decisions Chart Template | . | M | 2.12.00 | 2145 |
| 3WS | Crystal Decisions Chart Gradient | . | M | 2.13.00 | 2188 |
| 4DB | 4th Dimension Database Structure | . | M | 2.15.00 | 2344 |
| 4XM | 4X Movie Format | . | H | 2.12.00 | 2098 |
| 602 | T602 Document | . | M | 2.17.00 | 2520 |
| 602 | T602 Document (CP 852 Encoding) | . | M | 2.22.00 | 3089 |
| 602 | T602 Document (Kamenicky Encoding) | . | M | 2.22.00 | 3088 |
| 602 | T602 Document (KOI8-CS Encoding) | . | M | 2.22.00 | 3090 |
| 68K | Fat Binary | . | M | 2.19.00 | 2732 |
| 68K | QuickTime Xtra Plug-in | . | M | 2.05.00 | 1266 |
| 7Z | 7-Zip Archive | . | M | 2.07.00 | 1519 |
| 8BCB | Photoshop Color Book | . | M | 2.19.04 | 2621 |
| 8BI | Adobe Photoshop Plug-in | . | M | 2.19.00 | 2779 |
| 8SV | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| 8SVX | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| 92I | TI-92 Bitmap | . | M | 2.07.00 | 1539 |
| ??$ | MS Compress 5.0 Archive | . | M | 2.18.00 | 2667 |
| ??$ | MS Compress 6.22 Archive | . | M | 2.18.00 | 2666 |
| ??$ | MS Compress Archive | . | M | 2.17.00 | 47 |
| ???M | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| ???X | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| ??_ | InstallShield 3.x Archive | . | M | 2.15.00 | 334 |
| ??_ | InstallShield Archive | . | M | 1.05.00 | 359 |
| ??_ | MS Compress 5.0 Archive | . | M | 2.18.00 | 2667 |
| ??_ | MS Compress 6.22 Archive | . | M | 2.18.00 | 2666 |
| ??_ | MS Compress Archive | . | M | 2.17.00 | 47 |
| ??_ | MS Windows Cabinet Archive | . | M | 2.07.00 | 99 |
| ??_ | MS Windows Cabinet Archive (MacBinary) | . | M | 2.16.00 | 2487 |
| ??_ | Novell Archive | . | M | 1.00.00 | 309 |
| ??Z | Gzip Unix Archive | . | M | 2.22.00 | 44 |
| ??Z | MS Windows Cabinet Archive | . | M | 2.07.00 | 99 |
| ??Z | MS Windows Cabinet Archive (MacBinary) | . | M | 2.16.00 | 2487 |
| ?_ | MS Compress 5.0 Archive | . | M | 2.18.00 | 2667 |
| ?_ | MS Compress 6.22 Archive | . | M | 2.18.00 | 2666 |
| ?_ | MS Compress Archive | . | M | 2.17.00 | 47 |
| ?Q? | Squeeze Archive | . | M | 1.00.00 | 55 |
| ?RS | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| A | Compiler Library (COFF) | . | M | 2.14.00 | 95 |
| A3D | Amapi 3D Model | . | M | 2.07.00 | 1477 |
| A3W | Authorware Windows File (Unpackaged) | . | M | 2.15.00 | 593 |
| A4P | Authorware Course File (Packaged) | . | M | 2.15.00 | 594 |
| A4P | Authorware Course File (Without Runtime) | . | M | 2.19.04 | 2848 |
| A4R | Authorware Course File (Packaged) | . | M | 2.15.00 | 594 |
| A4W | Authorware Windows File (Unpackaged) | . | M | 2.15.00 | 593 |
| A5W | Authorware Windows File (Unpackaged) | . | M | 2.15.00 | 593 |
| A78 | Atari 7800 ROM Image | . | M | 2.18.00 | 2687 |
| A?? | Arj Archive | . | M | 2.14.00 | 21 |
| AAC | Advanced Audio Coding ADIF Sound | . | M | 2.16.00 | 454 |
| AAC | Advanced Audio Coding ADTS Sound | . | M | 2.16.00 | 2419 |
| AAC | Astrid/Quartex Advanced Audio Coding | . | M | 2.09.00 | 1709 |
| AAM | Authorware Shocked File (Map) | . | M | 2.15.00 | 592 |
| AAS | Archos Encrypted / Signed Data | . | M | 2.19.04 | 2849 |
| AAX | AXX Archive | . | M | 2.14.00 | 2295 |
| AB | Applixware Bitmap Image | . | M | 2.23.00 | 3210 |
| AB1 | ABIF Applied Biosystems Inc. Format | . | M | 2.15.00 | 2346 |
| ABA | Palm OS Address Book | . | M | 2.03.06 | 461 |
| ABC | ABC Music Language Song | . | M | 2.16.00 | 520 |
| ABD | Quicken Data File | . | M | 2.11.00 | 1308 |
| ABD | The Bat! Address Book | . | M | 2.11.00 | 2055 |
| ABD | The Bat! Hive Index | . | M | 2.11.00 | 2057 |
| ABF | Altair Binary Format | . | M | 2.19.04 | 2850 |
| ABI | America Online Address Book Index | . | M | 2.06.00 | 1269 |
| ABK | AMOS Music Bank | . | M | 2.19.04 | 480 |
| ABK | Need for Speed: Underground Audio | . | M | 2.09.00 | 1716 |
| ABM | Audition On-line Dance Battle Music | . | M | 2.15.00 | 2347 |
| ABM | MS Album Media Database | . | M | 2.06.00 | 1268 |
| ABM | PhotoStudio Album | . | M | 2.10.00 | 1965 |
| ABP | ABComp Archive | . | M | 2.22.00 | 2296 |
| ABS | Absolute Database | . | M | 2.19.04 | 2688 |
| ABW | AbiWord Document | . | M | 2.07.00 | 1516 |
| ABY | America Online Address Book | . | M | 2.06.00 | 1270 |
| AC | Ac3d 3D Model | . | M | 2.14.00 | 2283 |
| AC3 | AC-3 / Dolby Digital Audio | . | M | 2.16.00 | 2418 |
| ACAD | AutoCAD Drawing Exchange Binary | . | M | 2.08.00 | 75 |
| ACB | Photoshop Color Book | . | M | 2.19.04 | 2621 |
| ACBM | Amiga Contiguous Bitmap | Y | H | 2.18.00 | 2629 |
| ACC | MS Access Database/Wizard | . | M | 2.15.00 | 522 |
| ACCDA | MS Access Database/Wizard | . | M | 2.15.00 | 522 |
| ACCDB | MS Access Database/Wizard | . | M | 2.15.00 | 522 |
| ACCDE | MS Access Database/Wizard | . | M | 2.15.00 | 522 |
| ACCDT | MS Access Database Template (Open XML) | Y | H | 2.21.00 | 2396 |
| ACCDU | MS Access Database/Wizard | . | M | 2.15.00 | 522 |
| ACD | Sonic Foundry ACID 3 Music | . | M | 2.05.00 | 1265 |
| ACE | Ace Archive | . | M | 2.08.00 | 481 |
| ACE | Jupiter Ace Snapshot | . | M | 2.15.00 | 711 |
| ACF | DB/TextWorks Database Access Control File | . | M | 2.18.00 | 2689 |
| ACF | MS Agent/Assistant Character | Y | H | 2.17.00 | 1207 |
| ACG | MS Agent/Assistant Character | Y | H | 2.17.00 | 1207 |
| ACL | MS Spelling Auto Correct List | . | M | 2.10.00 | 373 |
| ACM | MS Windows Audio Converter | Y | H | 2.03.10 | 295 |
| ACP | ArCon Project File | . | M | 2.19.04 | 2851 |
| ACP | WinDump / Winpcap Capture | . | M | 2.07.00 | 1457 |
| ACR | American College of Radiology File | . | M | 2.15.00 | 573 |
| ACS | MS Agent/Assistant Character | Y | H | 2.17.00 | 1207 |
| ACU | ACUCOBOL-GT Intermediate Object File | . | M | 2.16.00 | 2349 |
| AD | AppleDouble MIME Format | . | M | 2.16.00 | 2439 |
| ADA | Advanced Digital Audio Compressed | . | M | 2.08.00 | 1692 |
| ADB | AddWeb Update | . | M | 2.06.00 | 1317 |
| ADB | Corel CENTRAL Address Book | . | M | 2.15.00 | 2358 |
| ADDRESSBOOK | MS Windows Live Contacts | . | M | 2.21.00 | 3020 |
| ADEX | ADEX ChromaGraph Image | Y | M | 2.15.00 | 178 |
| ADF | AmigaOS Disk Image | . | M | 2.17.00 | 2569 |
| ADF | Antenna Data File | . | M | 2.18.00 | 2690 |
| ADF | Extended ISA Adapter File | . | M | 2.00.00 | 409 |
| ADG | eFax Electronic Fax Phonebook | . | M | 2.10.00 | 1939 |
| ADI | Amateur Data Interchange Format (ADIF) | . | M | 2.15.00 | 576 |
| ADIF | Amateur Data Interchange Format (ADIF) | . | M | 2.15.00 | 576 |
| ADL | openEHR Archetype Definition Language | . | M | 2.18.00 | 2691 |
| ADM | Addict Spell Check Dictionary (Compile | . | M | 2.11.00 | 2089 |
| ADM | Windows Policy Template | . | M | 2.19.04 | 2852 |
| ADM | Windows Policy Template (Unicode) | . | M | 2.19.04 | 2853 |
| ADP | MS Access Database Project | Y | H | 2.22.00 | 483 |
| ADR | eFax Phone Book | . | M | 2.10.00 | 1968 |
| ADR | MS Windows Profile System File | . | M | 2.19.00 | 1232 |
| ADR | Opera Bookmark | . | M | 2.07.00 | 1478 |
| ADT | Advantage Database Server Database | . | M | 2.18.00 | 2692 |
| ADT | Casio Travel Phrase Database | . | M | 2.18.00 | 2693 |
| ADV | WordPerfect Spelling Lexicon Dictionary | . | M | 2.22.00 | 1425 |
| ADX | Dreamcast Audio | . | M | 2.07.00 | 1436 |
| ADX | Lotus Approach Index | . | M | 2.07.00 | 1435 |
| AEF | Visual Objects Application Export File | . | M | 2.18.00 | 2694 |
| AEH | iPer Advanced Embedded Hypertext | . | M | 2.19.04 | 2854 |
| AEP | ArcExplorer Project | . | M | 2.15.00 | 2359 |
| AFF | Advanced Forensic Format Disk Image | . | M | 2.18.00 | 2695 |
| AFF | Affix File | . | M | 2.19.04 | 2855 |
| AFF | AGEMA File | . | M | 2.19.04 | 2856 |
| AFM | Adobe Composite Font Metrics | . | M | 2.17.00 | 2598 |
| AFM | Adobe Font Metrics (DESQview) | . | M | 2.03.06 | 249 |
| AFM | Adobe Master Font Metrics | . | M | 2.14.00 | 2246 |
| AFS | Pro Evolution Soccer Game Archive | . | M | 2.15.00 | 547 |
| AFX | AFX/XPFX Archive | . | M | 2.18.00 | 2645 |
| AG | Applixware Document | . | M | 2.18.00 | 853 |
| AG | Applixware Graphic Image | . | M | 2.18.00 | 2696 |
| AGN | Psion Agenda File | . | M | 2.18.00 | 2622 |
| AGR | Grace Project File | . | M | 2.15.00 | 2360 |
| AHX | Abyss's Highest Experience Music | . | M | 2.17.00 | 534 |
| AI | Adobe Illustrator Drawing | Y | H | 2.19.00 | 441 |
| AI | Adobe Illustrator Drawing (MacBinary) | . | M | 2.09.00 | 1777 |
| AI | Adobe PostScript Document | Y | H | 2.19.02 | 301 |
| AI | Ai Archiver Archive | . | M | 2.22.00 | 3080 |
| AI | Ai32 Archiver Archive | . | M | 2.22.00 | 1520 |
| AI | Encapsulated PostScript Document | Y | H | 2.13.00 | 171 |
| AI | Encapsulated PostScript Document (MacBinary) | . | M | 2.09.00 | 1732 |
| AIC | Advanced Image Coding Image | . | M | 2.07.00 | 1540 |
| AIF | Audio IFF Compressed Sound | Y | H | 2.08.00 | 1693 |
| AIF | Audio IFF Sound | Y | H | 2.18.00 | 323 |
| AIFC | Audio IFF Compressed Sound | Y | H | 2.08.00 | 1693 |
| AIFC | Audio IFF Sound | Y | H | 2.18.00 | 323 |
| AIFF | Audio IFF Compressed Sound | Y | H | 2.08.00 | 1693 |
| AIFF | Audio IFF Sound | Y | H | 2.18.00 | 323 |
| AIG | Design Your Own Home Architect Drawing | . | M | 2.15.00 | 2361 |
| AIN | AIN Archiver Archive | . | M | 2.07.00 | 427 |
| AIRPORTS | RealFlight Radio Control Flying File | . | M | 2.19.04 | 2858 |
| AJP | Anfy Applet Generator Saved File | . | M | 2.15.00 | 2362 |
| AK | TracerCAD Drawing | . | M | 2.19.04 | 2857 |
| AKM | Aksharamala Binary Keymap | . | M | 2.19.04 | 2859 |
| AKP | Akai S5000/S6000 MIDI Keyboard Sample | . | H | 2.18.00 | 2623 |
| AKT | AKT Archive | . | M | 2.22.00 | 2297 |
| AL2 | Alchemy 2000 Molecule | . | M | 2.17.00 | 2528 |
| ALB | PhotoStudio Album | . | M | 2.10.00 | 1965 |
| ALC | ACUCOBOL-GT License | . | M | 2.15.00 | 2348 |
| ALC | Alchemy Molecule | . | M | 2.17.00 | 2527 |
| ALL | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| ALM | Aley's Module | . | M | 2.19.04 | 2860 |
| ALS | MPEG-4 Audio Lossless Coding Standard | . | M | 2.15.00 | 948 |
| ALT | MS Windows System Event Log | . | M | 2.04.00 | 1236 |
| ALX | BlackBerry Application Loader | . | M | 2.18.00 | 2697 |
| ALZ | ALZip Compressed Archive | . | M | 2.08.00 | 1562 |
| AM | Applixware Macro | . | M | 2.23.00 | 3211 |
| AM | MS Speech Recognition Engine Data | . | M | 2.06.00 | 1273 |
| AMC | A.M.Composer Music | . | M | 2.20.00 | 2862 |
| AMD | AMusic AdLib Tracker Music | . | M | 2.17.00 | 2572 |
| AMF | Amiga Metafile Format | Y | H | 2.18.00 | 1819 |
| AMF | Dual Module Player Music | Y | M | 1.00.00 | 231 |
| AMFF | Amiga Metafile Format | Y | H | 2.18.00 | 1819 |
| AMGC | AMGC Archive | . | M | 2.22.00 | 3060 |
| AMI | AMI Professional Document / Styles | Y | M | 2.19.00 | 1027 |
| AMM | Audio Manager Module | . | M | 2.18.00 | 2654 |
| AMM | Audio Manager Module (RIFF) | Y | H | 2.18.00 | 2653 |
| AMR | Adaptive Multi-Rate Audio | . | M | 2.16.00 | 1694 |
| AMS | Velvet Studio Music Module Song | . | M | 2.08.00 | 581 |
| AMT | ArtMoney Table | . | M | 2.18.00 | 2698 |
| AMV | MTV Movie | Y | H | 2.18.00 | 2699 |
| AMXX | AMX Mod X Plug-in | . | M | 2.15.00 | 2363 |
| ANB | Link Notebook File | Y | H | 2.17.00 | 1238 |
| ANB | Project Dogwaffle Animated Brush | . | M | 2.20.00 | 2863 |
| ANI | MS Windows Animated Cursor (Intel) | Y | H | 1.00.00 | 308 |
| ANI | MS Windows Animated Cursor (Motorola) | . | H | 2.17.00 | 2262 |
| ANI | NeoChrome Animation | . | M | 2.07.00 | 1517 |
| ANM | Deluxe Paint Animation | . | M | 2.07.00 | 1518 |
| ANS | ANSI Text File | . | M | 2.03.06 | 444 |
| AOM | Adobe Download Manager Online Shortcut | . | M | 2.15.00 | 2364 |
| AOS | Archos Encrypted / Signed Data | . | M | 2.19.04 | 2849 |
| AOS | Gmini Firmware Update | . | H | 2.15.00 | 2365 |
| AP | ArmPack Archive | . | M | 2.18.00 | 2700 |
| AP | WHAP Compressed Amiga Archive | . | M | 2.19.00 | 2780 |
| AP0 | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| APC | a-Pac Compressed Audio | . | M | 2.08.00 | 1695 |
| APC | Cryo Interactive APC Audio | . | M | 2.08.00 | 1696 |
| APC | Lotus 123 File | . | M | 2.03.06 | 97 |
| APD | Lotus 123 File | . | M | 2.03.06 | 97 |
| APE | Monkey's Lossless Compressed Audio | . | M | 2.08.00 | 1697 |
| APF | Lotus 123 File | . | M | 2.03.06 | 97 |
| APF | MightyFax File | . | M | 2.20.00 | 2864 |
| APL | Monkey's Audio Image Link | . | M | 2.15.00 | 2366 |
| APL | MS Windows COM+ Library | . | M | 2.15.00 | 1198 |
| APM | CD-ROM Autoplay Menu | . | M | 2.06.00 | 1267 |
| APM | MS Windows MetaFile (placeable) | . | M | 2.19.00 | 230 |
| APP | MS Windows Visual FoxPro Application | . | M | 2.06.00 | 504 |
| APP | Pocket CE Application | . | M | 2.11.00 | 1978 |
| APP | Symbian Oval Application | . | M | 2.11.00 | 1977 |
| APP | Timex Data Link Watch Application | . | M | 2.18.00 | 2701 |
| APR | Lotus Approach Document | Y | H | 2.19.00 | 2512 |
| APS | MS Visual C++ Compiled Resources | . | M | 1.05.00 | 402 |
| APT | Adaptive Prediction Tree Encoded Image | . | M | 2.15.00 | 1979 |
| APV | ApiViewer API Database | . | M | 2.15.00 | 2367 |
| AQ1 | AptiQuiz Test | . | M | 2.18.00 | 2702 |
| AR | AIX Small Indexed Archive (32-bit) | . | M | 2.18.00 | 1563 |
| AR | AIX Small Indexed Archive (32/64-bit) | . | M | 2.18.00 | 1564 |
| AR | BSD System V AR Archive | . | M | 2.23.00 | 3054 |
| AR | Compiler Library (COFF) | . | M | 2.14.00 | 95 |
| AR7 | AR7 Archive | . | M | 2.14.00 | 2298 |
| ARC | Arc Archive | . | M | 1.00.00 | 46 |
| ARC | FreeArc Compressed Archive | . | M | 2.18.00 | 2703 |
| ARC | PK Pak Archive | . | M | 1.00.00 | 20 |
| ARE | Infinity Game Engine Area Description | . | M | 2.10.00 | 1868 |
| ARF | Active Tutor Data | . | M | 2.18.00 | 2704 |
| ARH | Squash Archive | . | M | 2.14.00 | 2299 |
| ARJ | Arj Archive | . | M | 2.14.00 | 21 |
| ARK | QuArk Compressed Archive | . | M | 2.08.00 | 1629 |
| ARL | America Online Personal File Cabinet | . | M | 2.16.00 | 1335 |
| ARN | CD Autorun Creator Package | . | M | 2.18.00 | 2705 |
| ARP | Audition Play Data | . | M | 2.15.00 | 1145 |
| ARQ | ARQ Archive | . | M | 2.22.00 | 3066 |
| ARS | ARS Archive | . | M | 2.22.00 | 3074 |
| ART | America Online Image | . | M | 2.07.00 | 1541 |
| ART | Crayola Image | . | M | 1.00.00 | 33 |
| ART | Kolbe Test Results | . | M | 2.06.00 | 1323 |
| ART | MS Speech Recognition Engine Articles | Y | H | 2.17.00 | 2198 |
| ART | PFS: 1st Publisher Art Image | . | M | 1.00.00 | 129 |
| ARW | Sony RAW Image | . | M | 2.20.00 | 2865 |
| ARX | ARX Compressed Archive | . | M | 2.08.00 | 1565 |
| AS | Applixware Spreadsheet | . | M | 2.19.00 | 2767 |
| AS4 | Electronic Arts Game Audio 1 | . | M | 2.18.00 | 2655 |
| ASA | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASAX | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASB | IXimager Disk Image | . | M | 2.21.00 | 2918 |
| ASC | 3D Studio Image (ASCII) | . | M | 2.17.00 | 2526 |
| ASC | Pretty Good Privacy Signature (ASCII) | . | H | 2.18.00 | 2627 |
| ASC | Text File | Y | H | 2.22.00 | 3 |
| ASCX | Java Script Source Code File | . | H | 2.23.00 | 401 |
| ASCX | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASCX | MS Visual BASIC Source Code | . | H | 2.09.01 | 1214 |
| ASD | ASD Archive | . | M | 2.14.00 | 586 |
| ASD | Lotus 123 File | . | M | 2.03.06 | 97 |
| ASE | 3D Studio Max Model Export (ASCII) | . | M | 2.14.00 | 587 |
| ASF | Electronic Arts Game Audio 1 | . | M | 2.18.00 | 2655 |
| ASF | FIFA Football & Need for Speed Audio | . | M | 2.08.00 | 588 |
| ASF | MS Windows Media Active Streaming File | . | H | 2.19.00 | 1259 |
| ASHX | ASP.NET Web Handler | . | M | 2.23.00 | 3312 |
| ASM | Assembly Source Code File | . | H | 2.09.01 | 1803 |
| ASM | freeCAD assembly | . | M | 2.20.00 | 2866 |
| ASM | Pro/ENGINEER Assembly | . | M | 2.18.00 | 2706 |
| ASMX | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASP | Active Server Page | . | M | 2.03.06 | 447 |
| ASP | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| ASP | Java Script Source Code File | . | H | 2.23.00 | 401 |
| ASP | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASP? | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| ASP? | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| ASP? | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| ASP? | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| ASP? | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| ASP? | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| ASPX | Java Script Source Code File | . | H | 2.23.00 | 401 |
| ASPX | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| ASPX | MS Visual BASIC Source Code | . | H | 2.09.01 | 1214 |
| ASR | MS Windows Media Active Streaming File | . | H | 2.19.00 | 1259 |
| ASS | Aegisub Advanced SubStation Alpha Subtitle | . | M | 2.18.00 | 2707 |
| ASS | Aegisub Advanced SubStation Alpha Subtitle (Unicode) | . | M | 2.20.00 | 2867 |
| AST | FIFA Football & Need for Speed Audio | . | M | 2.08.00 | 588 |
| AST | WordPerfect Assistant Template | . | M | 2.06.00 | 1324 |
| ASWCS | avast! Antivirus Skin | . | M | 2.20.00 | 2869 |
| ASX | MS Windows Media Player Play List | . | M | 2.17.00 | 2602 |
| ATA | Antenna Project | . | M | 2.20.00 | 2870 |
| ATC | AceText Collection | . | M | 2.16.00 | 2457 |
| ATH | Athena Document | . | M | 2.18.00 | 2708 |
| ATK | Andrew Toolkit Raster Image | . | M | 2.14.00 | 659 |
| ATM | Terragen Light and Atmosphere | . | M | 2.18.00 | 2709 |
| ATMSPHR | Terragen Light and Atmosphere | . | M | 2.18.00 | 2709 |
| ATOM | Atom Format | Y | H | 2.16.00 | 2440 |
| ATR | Atari Disk Image | . | M | 2.08.00 | 1691 |
| ATTR | iPhoto Image Attributes | . | M | 2.20.00 | 2871 |
| AU | Audacity Audio Block | . | M | 2.18.00 | 1707 |
| AU | NeXT/Sun/UNIX Sound | Y | M | 1.15.00 | 265 |
| AUF | Audacity Audio Block | . | M | 2.18.00 | 1707 |
| AUP | Audacity Project File | . | M | 2.09.00 | 1708 |
| AUR | AutoREALM Map | . | M | 2.18.00 | 2710 |
| AUS | AutoREALM Symbols | . | M | 2.18.00 | 2711 |
| AUT | America Online Personal File Cabinet | . | M | 2.16.00 | 1335 |
| AVB | Avid Bin File | . | M | 2.18.00 | 2712 |
| AVB | MS Chat Animated Character | . | M | 1.05.00 | 389 |
| AVC | Kaspersky Anti-virus Toolkit Database | . | M | 2.20.00 | 2872 |
| AVI | MS Audio/Visual Interleave (Intel) | Y | H | 2.11.00 | 234 |
| AVI | MS Audio/Visual Interleave (Motorola) | Y | H | 2.17.00 | 2599 |
| AVI | Resource Interchange File Format | Y | H | 2.20.00 | 212 |
| AVR | Audio Visual Research Sound | Y | M | 1.00.00 | 264 |
| AVS | Digital Video Interface Video | . | M | 2.12.00 | 2138 |
| AVS | Winamp Advanced Visualization Studio | . | M | 2.18.00 | 2713 |
| AW | Applixware Words Document | . | M | 2.23.00 | 3209 |
| AW | MS Windows Help Answer Wizard | . | M | 2.06.00 | 374 |
| AWB | Adaptive Multi-Rate Wideband Audio | . | M | 2.20.00 | 2377 |
| AWD | Artweaver Painting | . | M | 2.18.00 | 2714 |
| AWE | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| AWE | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| AWK | Nawk Programming Languaget | . | M | 2.16.00 | 2408 |
| AWL | Alternative Web Language | . | M | 2.18.00 | 2715 |
| AWS | AWS Virtual Tape Image | . | M | 2.18.00 | 2659 |
| AXS | AXS Realtime Analog Synthesizer Module | Y | H | 2.18.00 | 2658 |
| AXT | Adobe Photoshop Plug-in | . | M | 2.19.00 | 2779 |
| AXT | snAPPshot ASCII Application Object Template | . | M | 2.18.00 | 2716 |
| AY | Z80 Music Code With AY Music | . | M | 2.19.00 | 2718 |
| AYM | Z80 Music Code With AY Music | . | M | 2.19.00 | 2718 |
| AZA | QazaR Compressed Archive | . | M | 2.18.00 | 2719 |
| B2Z | B2Z dVS Model object | . | M | 2.07.00 | 1479 |
| B3D | Blitz3D/Max/Plus Texture or Mesh File | . | M | 2.19.00 | 2754 |
| B3D | Cinema 4D Image | . | M | 2.07.00 | 1496 |
| B58 | BOA Constrictor Compressed Archive | . | M | 2.08.00 | 1580 |
| B5T | BlindWrite 5 Table of Contents/Tracks | . | M | 2.19.00 | 2755 |
| B64 | MIME Base64 Archive | . | M | 2.09.01 | 482 |
| B8 | PictureMaker Blue Channel Image Data | . | M | 2.20.00 | 1650 |
| B?? | BOA Constrictor Compressed Archive | . | M | 2.08.00 | 1580 |
| BADONGO | BaDonGo File Information | . | M | 2.20.00 | 2873 |
| BAG | America Online Buddies List | . | M | 2.13.00 | 1271 |
| BAG | Bag Compressed Archive | . | M | 2.08.00 | 1566 |
| BAK | Backup File (Unknown Source) | . | L | 1.05.00 | 506 |
| BAK | Logitech Desktop Messenger User Profile | . | M | 2.18.00 | 605 |
| BAK | MS SQL Server Database Tape Backup | . | H | 2.18.02 | 1463 |
| BAK | MS Windows Backup Utility Tape Image | . | M | 2.18.02 | 2727 |
| BAK | Norton Virus Definitions Update Certificate | . | M | 2.18.00 | 608 |
| BAK | Palm OS Address Book | . | M | 2.03.06 | 461 |
| BAK | Palm OS Datebook | . | M | 2.03.06 | 462 |
| BAK | Palm OS Expenses | . | M | 2.03.06 | 1241 |
| BAK | Palm OS Memo Pad | . | M | 2.03.06 | 464 |
| BAK | Palm OS To Do List | . | M | 2.03.06 | 463 |
| BAS | BASIC Script/Source Code | . | H | 2.22.00 | 28 |
| BAS | HBasic Source Code | . | M | 2.20.00 | 2874 |
| BAS | MS QuickBASIC Source Code | . | M | 2.19.00 | 2782 |
| BAS | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| BAS | MS Visual BASIC Source Code | . | H | 2.09.01 | 1214 |
| BASE | Java Archive | Y | M | 2.12.01 | 1432 |
| BASIN | HEC-HMS Basin Model Settings | . | M | 2.20.00 | 2875 |
| BAT | DOS Batch File | . | M | 2.15.00 | 22 |
| BBF | ScriptBasic Binary File (32 bit) | . | M | 2.20.00 | 2876 |
| BBF | ScriptBasic Binary File (64 bit) | . | M | 2.20.00 | 2877 |
| BBM | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| BBP | Object Oriented Graphics Library: Bezier (ASCII) | . | M | 2.17.00 | 2549 |
| BBP | Object Oriented Graphics Library: Bezier (Binary) | . | M | 2.17.00 | 2550 |
| BBX | BrainBox Neural Net | . | M | 2.20.00 | 2878 |
| BC | BWC Archive | . | M | 2.04.00 | 448 |
| BC | Low Level Virtual Machine Bytecode | . | M | 2.20.00 | 2879 |
| BC | Low Level Virtual Machine Bytecode (Compressed) | . | M | 2.20.00 | 2880 |
| BCA | Jetico Encrypted Archive | . | M | 2.08.00 | 1572 |
| BCA | Railroad Tycoon Building Category | . | M | 2.08.00 | 1567 |
| BCS | Brian's Compression Shell Animation | . | M | 2.12.00 | 2099 |
| BCT | OmniPage Character Recognition Tree | . | M | 2.07.00 | 1415 |
| BDF | Brother BES-100E Embroidery | . | M | 2.20.00 | 2881 |
| BDF | Glyph Bitmap Distribution Format Font | . | H | 2.23.00 | 595 |
| BDR | MS Office/Publisher Border | . | M | 2.06.00 | 1208 |
| BEE | Bee Compressed Archive | . | M | 2.08.00 | 1573 |
| BEH | Virtual Reality World (Binary) | . | M | 1.05.00 | 413 |
| BEZ | Object Oriented Graphics Library: Bezier (ASCII) | . | M | 2.17.00 | 2549 |
| BEZ | Object Oriented Graphics Library: Bezier (Binary) | . | M | 2.17.00 | 2550 |
| BF | Cryo Interactive Game Data | . | M | 2.20.00 | 2882 |
| BFA | Blowfish Encrypted File | . | M | 2.20.00 | 2883 |
| BFLI | Big Flexible Line Interpretation (C64) Bitmap | . | M | 2.20.00 | 2884 |
| BFN | Brother Embroidery Software Font | . | M | 2.20.00 | 2885 |
| BFX | BitFax Document | . | M | 2.20.00 | 2886 |
| BGA | IBM OS/2 Bitmap | Y | M | 1.05.00 | 287 |
| BGA | OS/2 Bitmap Graphic Array | . | M | 2.07.00 | 1542 |
| BGI | Borland Graphics Printing Interface | . | M | 1.00.00 | 145 |
| BGI | Borland Graphics Video Interface | . | M | 2.10.00 | 1820 |
| BH | BlackHole Compressed Archive | . | M | 2.08.00 | 1574 |
| BHF | pcAnywhere Host File | . | M | 2.11.00 | 1983 |
| BI | Binary Data File (Unknown Source) | . | L | 1.05.00 | 380 |
| BIF | Binary Image File | . | M | 1.00.00 | 170 |
| BIG | EA Game MOD | . | M | 2.19.00 | 2781 |
| BIG | Home World 2 Game Archive | . | M | 2.08.00 | 1634 |
| BIK | Bink Game Video | . | M | 2.12.00 | 2100 |
| BIN | Ace Ventura Game Archive | . | M | 2.15.00 | 487 |
| BIN | Binary Data (Unknown Source) (MacBinary) | . | M | 2.09.00 | 1767 |
| BIN | Binary Data File (Unknown Source) | . | L | 1.05.00 | 380 |
| BIN | Corel Software Identifier/Security | . | M | 2.10.00 | 1966 |
| BIN | DESI-III drawing | . | M | 2.20.00 | 2887 |
| BIN | DOS Program (Tiny) | Y | M | 2.18.00 | 30 |
| BIN | Family Tree System File | . | H | 2.17.00 | 1970 |
| BIN | InstallShield Data | . | M | 2.10.00 | 1348 |
| BIN | Linksys Router Configuration Backup | . | M | 2.18.00 | 763 |
| BIN | MaxBlast Localized Menu | . | M | 2.10.00 | 1951 |
| BIN | MS Office Binder Document/Template/Wizard | Y | H | 2.23.00 | 326 |
| BIN | MS PocketPC Device Emulator | . | M | 2.18.00 | 619 |
| BIN | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| BIN | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| BIN | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| BIN | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| BIN | MS Windows Event Cache | . | M | 2.11.00 | 2078 |
| BIN | MS Windows Media Database | . | M | 2.06.00 | 1319 |
| BIN | MS Windows Program (16 bit) | Y | H | 2.03.10 | 288 |
| BIN | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| BIN | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| BIN | Norton Internet Security Web Definitions | . | M | 2.18.00 | 616 |
| BIN | Norton Virus Definitions Update | . | M | 2.18.00 | 598 |
| BIN | PaperPort Database Map File | . | M | 2.14.00 | 2233 |
| BIN | ROM Chip Image | . | M | 2.07.00 | 256 |
| BIN | StuffIt Mac Archive | . | M | 2.22.01 | 262 |
| BIN | StuffIt Mac Archive (MacBinary) | . | M | 2.09.00 | 1757 |
| BIN | System Driver | . | H | 2.09.00 | 214 |
| BINK | Bink Game Video | . | M | 2.12.00 | 2100 |
| BIO | BioArc Compressed Archive | . | M | 2.08.00 | 1575 |
| BITMAP | QuickTime Data | . | M | 2.10.00 | 1297 |
| BIX | BIX Compressed Archive | . | M | 2.14.00 | 1576 |
| BIZ | BIZ dVS Model/Object | . | M | 2.20.00 | 2888 |
| BK0 | BlackBerry Data | . | M | 2.10.00 | 1183 |
| BKF | MS Windows Backup Utility Tape Image | . | M | 2.18.02 | 2727 |
| BKF | Seagate Backup Tape Image | . | H | 2.18.02 | 2728 |
| BKI | IBM BookManager Bookshelf Index | . | M | 2.20.00 | 2889 |
| BKS | IBM BookManager Bookshelf Book | . | M | 2.20.00 | 2890 |
| BLB | DreamWorks Resource Archive | . | M | 2.18.00 | 2660 |
| BLEND | Blender 3D Project File Format | . | M | 2.19.00 | 2784 |
| BLG | Windows Binary Performance Log (Win2K) | . | M | 2.13.01 | 2206 |
| BLI | BLINK Compressed Archive | . | M | 2.08.00 | 1577 |
| BLK | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| BLK | Descent Mission Builder Blocks | . | M | 2.17.00 | 527 |
| BLK | Trackjoy Block File | . | M | 2.10.00 | 1886 |
| BLOB | Cosmic Blobs Model | . | M | 2.20.00 | 2891 |
| BLP | Blizzard Texture | . | M | 2.20.00 | 2783 |
| BLT | America Online Instant Messenger Buddy List | . | M | 2.20.00 | 2892 |
| BLU | ShrinkIt Apple II Compressed Archive | . | M | 2.20.00 | 2368 |
| BLUE | EVE Online Data | . | M | 2.20.00 | 2893 |
| BM | X11 BitMap | . | H | 1.05.00 | 179 |
| BMA | BMA Archiver Compressed Archive | . | M | 2.20.00 | 2894 |
| BMD | GameCube 3D Model (Texture + Skeleton) | . | M | 2.20.00 | 2895 |
| BMF | BMF Bitmap Image | . | M | 2.08.00 | 1647 |
| BMF | ByteMap Font | . | M | 2.20.00 | 2896 |
| BMK | WinDVD Bookmark File | . | M | 2.03.06 | 599 |
| BMP | Alpha Microsystems Bitmap | Y | M | 1.00.00 | 175 |
| BMP | Award AWBM BIOS Bitmap | . | M | 2.20.00 | 2897 |
| BMP | BMP Graphic Image | . | M | 1.00.00 | 162 |
| BMP | IBM OS/2 Bitmap | Y | M | 1.05.00 | 287 |
| BMP | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| BMP | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| BMP | X11 BitMap | . | H | 1.05.00 | 179 |
| BND | Resource Interchange File Format | Y | H | 2.20.00 | 212 |
| BNK | Ad-Lib Instrument Bank | Y | M | 1.00.00 | 224 |
| BNK | ExamView Question Bank | . | M | 2.14.00 | 2219 |
| BNK | NVidia MIDI Instrument Bank | . | M | 2.07.00 | 1422 |
| BNS | BinSCII Compressed Archive | . | M | 2.20.00 | 2903 |
| BOA | BOA Constrictor Compressed Archive | . | M | 2.08.00 | 1580 |
| BONK | BONK Lossless/Lossy Compressed Audio | . | M | 2.16.00 | 2420 |
| BOO | Btoa Encoded File | . | M | 2.14.00 | 2300 |
| BOT | Soldat Bot Information | . | M | 2.20.00 | 2899 |
| BPD | Buero Plus NexT FlashFiler Database | . | M | 2.20.00 | 2900 |
| BPD | Business Plan Pro Data | . | M | 2.20.00 | 2901 |
| BPD | Pscript Binary PostScript Printer Desc | . | M | 2.13.00 | 2158 |
| BPX | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| BQY | BrioQuery File | . | M | 2.20.00 | 2902 |
| BR6 | Bryce 6 Scene | . | M | 2.19.00 | 2785 |
| BS2 | BSArc/BS2 Archive | . | M | 2.22.00 | 3056 |
| BSA | BSArc/BS2 Archive | . | M | 2.22.00 | 3056 |
| BSC | BinSCII Compressed Archive | . | M | 2.20.00 | 2903 |
| BSC | MS Visual C++ Program Database | . | M | 2.09.00 | 423 |
| BSN | BSA Packing Program Compressed Archive | . | M | 2.22.00 | 1581 |
| BSP | Getic 3D Scene/Model | . | M | 2.20.00 | 2905 |
| BSP | Id Software Game Map (Quake) | . | M | 1.05.00 | 385 |
| BSP | Quake 2 Map | . | M | 2.20.00 | 2906 |
| BSP | Valve Game Map | . | M | 2.20.00 | 2904 |
| BSQ | BinSCII Compressed Archive | . | M | 2.20.00 | 2903 |
| BT | VTBuilder Binary Terrain | . | M | 2.20.00 | 2907 |
| BTG | FlightGear Scenery | . | M | 2.20.00 | 2908 |
| BTL | Borland Text Language Dictionary | . | M | 2.06.00 | 1274 |
| BTPC | BTPC Compressed Image | . | M | 2.14.00 | 453 |
| BTR | FrontPage Binary-Tree Index | . | M | 2.09.00 | 650 |
| BTR | WBEM Repository Database Support File | . | M | 2.07.00 | 437 |
| BTS | BTSpk Archive | . | M | 2.14.00 | 2301 |
| BTX | DB/TextWorks Database Term and Word Indexes | . | M | 2.20.00 | 2909 |
| BTY | Railroad Tycoon Building Type | . | M | 2.08.00 | 1568 |
| BUP | DVD Video Support File | . | M | 2.00.00 | 1219 |
| BVD | BvD Fileset | . | M | 2.20.00 | 2910 |
| BW | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| BWG | BrainWave Generator Binaural Beat | . | M | 2.20.00 | 2911 |
| BWS | Enot External Photo Viewer Settings | . | M | 2.20.00 | 2912 |
| BXU | PictureGear Studio File | . | M | 2.20.00 | 2913 |
| BXY | ShrinkIt Apple II Compressed Archive | . | M | 2.20.00 | 2368 |
| BZ | Bzip Archive V1 | . | M | 2.14.00 | 2302 |
| BZ | Bzip Archive V2 | . | M | 2.19.00 | 1426 |
| BZ2 | Bzip Archive V2 | . | M | 2.19.00 | 1426 |
| BZA | BZA Compressed Archive | . | M | 2.08.00 | 1582 |
| C | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| C | Deluxe Paint Multi-Colour Font | . | M | 2.14.00 | 2322 |
| C | SecureRemote Data | . | M | 2.03.06 | 624 |
| C | Source Code (General) | . | M | 2.23.00 | 1256 |
| C | Source Code Header/Include File | . | M | 2.15.00 | 403 |
| C10 | Virtual MC-10 Tape Image | . | M | 2.07.00 | 1480 |
| C16 | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| C4D | Cinema 4D Model | . | M | 2.19.00 | 2787 |
| C64 | PC Link Image | . | M | 2.08.00 | 1597 |
| C64 | PC64 Saved-Session Image | . | M | 2.08.00 | 1598 |
| CA1 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA2 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA3 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA4 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA5 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA6 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CA7 | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CAB | InstallShield 5 Cabinet Archive | . | M | 2.08.00 | 347 |
| CAB | MS Windows Cabinet Archive | . | M | 2.07.00 | 99 |
| CAB | MS Windows Cabinet Archive (MacBinary) | . | M | 2.16.00 | 2487 |
| CAB | MS Windows CE Cabinet Archive | . | M | 2.23.00 | 3259 |
| CACHE | MS Visual Studio.NET Cache | . | M | 2.17.00 | 2522 |
| CAD | CadStd Drawing | . | M | 2.21.00 | 2932 |
| CAD | Drafix Windows CAD File | . | M | 1.00.00 | 243 |
| CAD | EXTRACAD Drawing | . | M | 2.21.00 | 2933 |
| CAF | Composite Attachment File | . | M | 2.16.01 | 2509 |
| CAF | Core Audio Format Sound | . | M | 2.18.00 | 2661 |
| CAG | Capella Gallery Music | . | M | 2.21.00 | 2934 |
| CAG | MS ClipArt Gallery | Y | H | 2.17.00 | 328 |
| CAL | Calendar Creator Plus Calendar | . | M | 1.05.00 | 399 |
| CAL | CALS Raster Image | . | M | 1.00.00 | 180 |
| CAL | MS Windows Calendar | Y | M | 1.00.00 | 165 |
| CAL | QV Map Geographic Coordinates | . | M | 2.21.00 | 2935 |
| CAL | SuperCalc Worksheet | . | M | 2.19.00 | 2777 |
| CALS | CALS Raster Image | . | M | 1.00.00 | 180 |
| CAM | Casio Camera Image | . | M | 1.05.00 | 428 |
| CAn | PK Zip Archive Split File | . | M | 2.06.00 | 1272 |
| CAP | Capella Music Sheet | . | M | 2.21.00 | 2936 |
| CAP | MS Windows Netmon Capture | . | M | 2.07.00 | 1449 |
| CAP | Network Monitor Capture | . | M | 2.21.00 | 2937 |
| CAP | NetXRay/SnifferPro Capture | . | M | 2.07.00 | 1450 |
| CAP | Snoop Capture | . | M | 2.21.00 | 2938 |
| CAP | Ventura Publisher File | . | M | 1.00.00 | 152 |
| CAR | CAR Compressed Archive | . | M | 2.08.00 | 1578 |
| CAR | Cellsprings/Web or DT Rule File | . | M | 2.08.00 | 1579 |
| CAR | Railroad Tycoon Car/Cargo Properties | . | M | 2.08.00 | 1570 |
| CAR | SAPCAR Archive | . | M | 2.22.00 | 2939 |
| CAS | Comma Separated Values Text File | Y | H | 2.15.00 | 451 |
| CAS | EnCase Case Data | . | M | 2.07.00 | 1451 |
| CAT | CD Catalog Localization Dictionary | . | M | 2.06.00 | 907 |
| CAT | MS Compatibility Database | . | M | 1.05.00 | 360 |
| CAT | MS Windows Security Catalog | . | M | 2.10.00 | 1233 |
| CAT | PCA Security Signatures Catalog | . | M | 2.03.06 | 469 |
| CAT | PhotoBase Catalog | . | M | 2.10.00 | 1969 |
| CATDRAWING | CATIA Drawing | . | M | 2.21.00 | 2940 |
| CAZ | Computer Associates Archive | . | M | 2.21.00 | 2941 |
| CBD | MapBrowser/MapWriter Vector Map | . | M | 2.21.00 | 2942 |
| CBD | MS Windows CB Data File | . | M | 2.00.00 | 1187 |
| CBD | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| CBF | Calendar Builder Saved Calendar | . | M | 2.21.00 | 2943 |
| CBF | CoffeeCup Button Factory Button | . | M | 2.21.00 | 2944 |
| CBK | EnCase Case Data | . | M | 2.07.00 | 1451 |
| CBS | Calendar Builder Style Sheet | . | M | 2.21.00 | 2945 |
| CBS | Code Breaker Save | . | M | 2.21.00 | 2946 |
| CBZ | MS Step by Step Interactive Training | . | M | 2.06.00 | 1275 |
| CC | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| CC | MS Image Color Matching Profile | . | M | 2.22.00 | 337 |
| CC | WordPerfect Office Color Correction | . | M | 2.06.00 | 1276 |
| CCA | CC:Mail Archive | . | M | 1.00.00 | 305 |
| CCA | Multimedia Fusion File | . | M | 2.21.00 | 2947 |
| CCD | CloneCD Control File | . | M | 2.08.00 | 1688 |
| CCF | Pronto Remote Control Codes File | . | M | 2.07.00 | 1462 |
| CCH | MS Windows .NET Application Configuration | . | H | 2.15.00 | 2189 |
| CCM | Corel Color Match Profile | . | H | 2.07.00 | 1424 |
| CCM | Lotus CC:Mail Box | . | L | 2.00.00 | 609 |
| CCT | DesignWorks Schematic | . | M | 2.16.00 | 2413 |
| CDA | Compact Disc Digital Audio Track | . | H | 2.13.00 | 499 |
| CDAED | WildTangent Game Data | . | M | 2.15.00 | 899 |
| CDAES | WildTangent Game Data | . | M | 2.15.00 | 899 |
| CDAET | WildTangent Game Data | . | M | 2.15.00 | 899 |
| CDANFO | WildTangent Game Data | . | M | 2.15.00 | 899 |
| CDAS | WildTangent Game Data | . | M | 2.15.00 | 899 |
| CDB | Mactive AdBase Data | . | M | 2.21.00 | 2948 |
| CDB | MS Pocket Access Database | . | M | 2.13.00 | 2157 |
| CDB | TimeSink AdGateway | . | M | 2.14.00 | 2223 |
| CDD | Claris Draw Image (MacBinary) | . | M | 2.09.00 | 644 |
| CDD | Concept Draw Drawing/Diagram | . | M | 2.21.00 | 1379 |
| CDDS | Midtown Madness 3 Data | . | M | 2.21.00 | 2949 |
| CDF | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| CDF | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| CDF | InstallShield Definition File | . | M | 2.00.00 | 1197 |
| CDF | MS Channel Definition Format | . | M | 2.17.02 | 2618 |
| CDF | NetCDF CDL Metadata | . | M | 2.21.00 | 2950 |
| CDF | Setup Information | . | M | 2.15.02 | 455 |
| CDF | Unidata NetCDF Graphic Image | . | M | 2.10.00 | 1923 |
| CDF-MS | MS Channel Definition Format | . | M | 2.17.02 | 2618 |
| CDI | Phillips Compact Disk Interactive File | . | M | 2.16.00 | 500 |
| CDL | NetCDF CDL Metadata | . | M | 2.21.00 | 2950 |
| CDM | MS DirectMusic Support File | . | M | 2.13.00 | 1220 |
| CDM | NTI CD&DVD-Maker Image | . | M | 2.21.00 | 2951 |
| CDR | Corel Draw Raster (Intel) | Y | H | 2.15.03 | 241 |
| CDR | Corel Draw Raster (Motorola) | Y | H | 2.17.00 | 2597 |
| CDR | Corel Draw Raster (proprietary) | . | M | 1.00.00 | 38 |
| CDR | Corel Metafile Exchange Image (Intel) | . | H | 2.07.00 | 631 |
| CDR | Corel Metafile Exchange Img (Motorola) | . | H | 2.17.00 | 2279 |
| CDR | Elite Plus Commander Saved Game | . | M | 2.10.00 | 1840 |
| CDT | Corel Draw Template | . | H | 2.07.00 | 612 |
| CDX | XBase/dBase Compount Index | . | M | 2.06.00 | 1325 |
| CDY | Cinderella (MacBinary) | . | M | 2.16.00 | 2461 |
| CE1 | ComputerEyes Raw Image | Y | M | 2.12.00 | 1543 |
| CE2 | ComputerEyes Raw Image | Y | M | 2.12.00 | 1543 |
| CEB | Apabi eBook | . | M | 2.21.00 | 2952 |
| CEG | Continuous Edge Graphic Image | . | M | 2.22.00 | 1544 |
| CEL | AutoDesk Animator Cel Image | . | M | 2.14.00 | 2274 |
| CEL | KiSS Paper Doll File | . | M | 2.17.00 | 614 |
| CER | CER Internet Security Certificate | . | M | 2.23.00 | 2823 |
| CER | VeriSign Security Certificate | . | M | 2.07.00 | 615 |
| CFDG | Context Free Design Grammar | . | M | 2.21.00 | 2953 |
| CFG | Configuration File (Binary) | . | M | 2.03.06 | 1240 |
| CFG | Configuration File (Text) | . | M | 2.00.00 | 352 |
| CFG | Corel OCR Trace Configuration | . | M | 2.18.00 | 617 |
| CFG | Flight Simulator Aircraft Configuration | . | M | 2.21.00 | 2954 |
| CFG | InstallShield Data | . | M | 2.10.00 | 1348 |
| CFG | MS Windows .NET Application Configuration | . | H | 2.15.00 | 2189 |
| CFG | Quicken Data File | . | M | 2.11.00 | 1308 |
| CFN | Calamus Font | . | M | 2.21.00 | 2955 |
| CFT | Animation Studio File | . | M | 1.00.00 | 219 |
| CGD | Cricket Graph Data | . | M | 1.00.00 | 40 |
| CGF | Egrid32 Compilable Grid Ready to be Compiled | . | M | 2.21.00 | 2956 |
| CGF | Egrid32 Compilable Grid Ready to be Modified | . | M | 2.21.00 | 2957 |
| CGG | Cricket Graph Graphics | . | M | 1.00.00 | 41 |
| CGI | Common Gateway Interface Script | . | L | 2.00.00 | 618 |
| CGM | Computer Graphics Metafile (ASCII) | . | M | 2.04.01 | 569 |
| CGM | Computer Graphics Metafile (Binary) | . | M | 2.17.00 | 351 |
| CGT | Cricket Graph Slide | . | M | 1.00.00 | 42 |
| CGT | GOLD Parsing System Table | . | M | 2.21.00 | 2958 |
| CHD | MAME Compressed Hard Disk Image | . | M | 2.23.00 | 3234 |
| CHI | ChiWriter Document 3.x | . | M | 2.21.00 | 2959 |
| CHI | ChiWriter Document 4.x | . | M | 2.21.00 | 2960 |
| CHI | MS Windows Help Module | . | M | 2.00.00 | 338 |
| CHK | MS ScanDisk/CHKDSK Fragment File | . | L | 1.05.00 | 452 |
| CHL | Chile Compressed Archive | . | M | 2.21.00 | 2961 |
| CHL | RealPlayer Live Channel | . | M | 2.14.00 | 2225 |
| CHM | MS Windows Help Module | . | M | 2.00.00 | 338 |
| CHP | CH Compressor for Picture! Image | . | M | 2.07.00 | 1545 |
| CHP | Ventura Publisher File | . | M | 1.00.00 | 152 |
| CHQ | MS Windows Help Module | . | M | 2.00.00 | 338 |
| CHR | Borland Graphics Interface Stroke Font | . | M | 2.06.00 | 1277 |
| CHR | Infinity Game Engine Character Info | . | M | 2.10.00 | 1869 |
| CHRT | KChart Document | Y | H | 2.21.00 | 2476 |
| CHS | MS HTML Help Index | . | M | 2.12.00 | 1278 |
| CHT | Harvard Graphics Chart | . | M | 1.00.00 | 200 |
| CHT | SPSS Template | . | M | 2.21.00 | 2962 |
| CHU | Infinity Game Engine GUI Elements | . | M | 2.10.00 | 1870 |
| CHW | MS Windows Help Module | . | M | 2.00.00 | 338 |
| CHZ | ChArc Compressed Archive | . | M | 2.08.00 | 1583 |
| CID | Claris Impact Draw (MacBinary) | . | M | 2.09.00 | 589 |
| CIK | Corel Duotone File | . | M | 2.15.00 | 633 |
| CIL | ClipArt Gallery Download Package | . | M | 2.19.00 | 2790 |
| CIN | Calculux Indoor Project | . | M | 2.17.00 | 621 |
| CIN | Cinematic Video (Quake 2) | . | M | 2.07.00 | 1548 |
| CIN | Cineon Bitmap | . | M | 2.07.00 | 1547 |
| CINEMA4D | Cinema 4D V4 Data | Y | H | 2.18.00 | 2290 |
| CIT | Claris Impact Template (MacBinary) | . | M | 2.09.00 | 1779 |
| CKT | CircuitMaker Schematic | . | M | 2.21.00 | 2963 |
| cl | XML Based Filtering Format | Y | H | 2.16.00 | 2455 |
| CL5 | Easy CD Creator Project Layout | . | M | 2.06.00 | 1279 |
| CLA | Java Class (Compiled) | . | M | 2.03.09 | 343 |
| CLASS | Java Class (Compiled) | . | M | 2.03.09 | 343 |
| CLB | MS Windows COM+ Library | . | M | 2.15.00 | 1198 |
| CLB | PCMCIA Configuration Library | . | M | 1.00.00 | 153 |
| CLF | ListPro Database | . | M | 2.21.00 | 2964 |
| CLG | Collage Maker Graphic | . | M | 2.19.00 | 2788 |
| CLK | ClickFORMS Data | . | M | 2.21.00 | 2965 |
| CLK | WatchGuard Cloaked File | . | M | 2.21.00 | 2966 |
| CLO | SPSS Chart Look | . | M | 2.11.00 | 2044 |
| CLP | DeskMate Clip Art | . | M | 2.21.00 | 2967 |
| CLP | MS Windows Clipboard/Picture | . | M | 2.08.00 | 196 |
| CLP | PC Paint/Pictor Page Image | Y | M | 1.05.00 | 10 |
| CLP | Quatro Pro File | Y | H | 2.17.00 | 155 |
| CLPI | Blu-ray Clip AV Stream | . | M | 2.21.00 | 2968 |
| CLR | Flash Color Table | . | M | 2.21.00 | 2969 |
| CLS | Java Class (Compiled) | . | M | 2.03.09 | 343 |
| CLS | MS Visual Basic Class Module | . | M | 2.03.06 | 510 |
| CLT | The Nemesis Project Game Archive | . | M | 2.15.00 | 543 |
| CLU | Revolution Resource Archive | . | M | 2.18.00 | 2662 |
| CLW | MS Foundation Classes (MFC) Wizard | . | M | 2.06.00 | 901 |
| CLX | Adobe Acrobat Linguistics Index | . | M | 2.12.00 | 1280 |
| CLX | Quickbooks & Family Tree Spelling Lexicon Dictionary | . | M | 2.23.00 | 1958 |
| CLX | SSCE Spelling Lexicon Dictionary | . | M | 2.23.00 | 2146 |
| CMA | Objective Caml Library | . | M | 2.23.00 | 3268 |
| CMBL | Logger Pro Data | . | M | 2.21.00 | 2970 |
| CMD | DOS Batch File | . | M | 2.15.00 | 22 |
| CMD5 | CrystalMaker Data v5 | . | M | 2.21.00 | 2971 |
| CMDF | CrystalMaker Data v2-4 | . | M | 2.21.00 | 2972 |
| CMF | Creative Music File | Y | M | 1.00.00 | 39 |
| CMG | Linux Compressed ROM File System (CRAMFS) (Motorola) | . | M | 2.21.00 | 2973 |
| CMI | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| CMI | Objective Caml Interface | . | M | 2.23.00 | 3266 |
| CML | Chemical Markup Language Document | . | M | 2.21.00 | 2974 |
| CMM | Paintbrush Multi-Page Fax Bitmap | Y | M | 2.19.00 | 319 |
| CMO | Objective Caml Object | . | M | 2.23.00 | 3267 |
| CMP | AUKTOOLS 2000 Compressed Archive | . | M | 2.08.00 | 1584 |
| CMP | FutureVision Resource Archive | . | M | 2.18.00 | 2663 |
| CMP | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| CMP | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| CMQ | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| CMU | Andrew Toolkit CMU File | . | M | 2.21.00 | 2975 |
| CMU | Andrew Toolkit Raster Image | . | M | 2.14.00 | 659 |
| CMU | MS Windows CMU Manager Bitmap | . | M | 2.07.00 | 1549 |
| CMUS | Common Musical Score | Y | H | 2.18.00 | 2631 |
| CMX | Corel Metafile Exchange Image (Intel) | . | H | 2.07.00 | 631 |
| CMX | Corel Metafile Exchange Img (Motorola) | . | H | 2.17.00 | 2279 |
| CMX | Objective Caml Native Object | . | M | 2.23.00 | 3269 |
| CMXA | Objective Caml Native Library | . | M | 2.23.00 | 3270 |
| CMY | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| CNDF | Compressed Channel Data File | . | M | 2.21.00 | 2976 |
| CNF | Configuration File (Binary) | . | M | 2.03.06 | 1240 |
| CNF | Configuration File (Text) | . | M | 2.00.00 | 352 |
| CNRP | Common Name Resolution Protocol | Y | H | 2.16.00 | 2441 |
| CNT | MS Windows Help Contents Table | . | M | 1.00.00 | 53 |
| CNV | BroadJump Character Set Conversion | . | M | 2.14.00 | 1281 |
| CO | Cult3D ActiveX Player Application | . | M | 2.21.00 | 2977 |
| COB | TrueSpace 3D Object (ASCII) | . | M | 2.18.00 | 2665 |
| COB | TrueSpace 3D Object (Binary) | . | M | 2.07.00 | 1470 |
| COD | Anivga Toolkit Sprite Image | . | M | 2.17.00 | 2591 |
| COD | Blackberry Compiled Java Code | . | M | 2.21.00 | 2978 |
| COL | Corel Draw Colorset | . | M | 2.15.02 | 613 |
| COL | Corel Texture Colorset | . | M | 2.03.06 | 467 |
| COL | MS HTML Help Collection | . | M | 2.21.00 | 2979 |
| COM | DIET Compressed DOS Program | . | M | 2.10.00 | 1817 |
| COM | DOS Program | Y | M | 1.00.00 | 15 |
| COM | DOS Program (Tiny) | Y | M | 2.18.00 | 30 |
| COM | EICAR Anti-Virus Test File | . | M | 2.10.00 | 1812 |
| COM | ICE Compressed DOS Program | . | M | 2.10.00 | 1814 |
| COM | Jerusalem (B) VIRUS! | . | M | 1.00.00 | 151 |
| COM | Larc Self Extracting Archive | . | M | 1.00.00 | 35 |
| COM | LGLZ Compressed DOS Program | . | M | 2.10.00 | 1815 |
| COM | LHarc Self Extracting Archive | . | M | 1.00.00 | 36 |
| COM | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| COM | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| COM | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| COM | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| COM | PK Lite Compressed DOS Program | . | M | 2.10.00 | 1818 |
| COM | Shrink Compressed DOS Program | . | M | 2.10.00 | 1816 |
| COM | Six-2-Four (624) Packed DOS Executable | . | M | 2.14.00 | 1813 |
| CON | MS Windows Animated Cursor (Intel) | Y | H | 1.00.00 | 308 |
| CON | MS Windows Animated Cursor (Motorola) | . | H | 2.17.00 | 2262 |
| CONFIG | BitTorrent Download Configuration | . | M | 2.07.00 | 1417 |
| CONFIG | MS Windows .NET Application Configuration | . | H | 2.15.00 | 2189 |
| CONTACT | Windows Vista Contact | . | H | 2.21.00 | 2980 |
| CONTROL | Hydrologic Modeling System Control Specifications Data | . | M | 2.21.00 | 2981 |
| COV | MS Windows Fax Cover Page | . | M | 2.13.00 | 98 |
| CPC | Cartesian Products Compressed Internet Document | . | M | 2.21.00 | 2982 |
| CPD | MS Windows Fax Cover Page | . | M | 2.13.00 | 98 |
| CPE | MS Windows Fax Cover Page | . | M | 2.13.00 | 98 |
| CPI | AVCHD Clip Information | . | M | 2.21.00 | 2983 |
| CPI | CPI XRD Document | . | M | 2.19.00 | 2751 |
| CPI | MS DOS Code Page Information/Font | . | M | 2.03.06 | 88 |
| CPIO | CPIO Archive | . | M | 2.22.00 | 1427 |
| CPK | Sega FILM/CPK File Format | . | M | 2.12.00 | 2101 |
| CPL | Call Processing Language | Y | H | 2.16.00 | 2442 |
| CPL | Corel Custom Palette | . | L | 2.18.00 | 657 |
| CPL | Corel PhotoPaint Palette | . | M | 2.18.00 | 1967 |
| CPL | MS Windows .NET Library (32 bit) | Y | H | 2.18.00 | 2686 |
| CPL | MS Windows .NET Library (64 bit) | Y | H | 2.18.00 | 2685 |
| CPL | MS Windows Control Panel Applet | Y | H | 2.03.10 | 296 |
| CPL | MS Windows Library (32 bit) | Y | H | 2.03.10 | 325 |
| CPL | MS Windows Library (64 bit) | Y | H | 2.18.00 | 2684 |
| CPP | Active Template Library Template | . | M | 2.00.00 | 1227 |
| CPP | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| CPP | Source Code (General) | . | M | 2.23.00 | 1256 |
| CPR | Corel Presents Presentation | . | L | 2.00.00 | 634 |
| CPR | CPC Plus Cartridge Image | . | M | 2.10.00 | 1841 |
| CPT | Corel PhotoPaint Image | . | M | 2.03.06 | 635 |
| CPX | Code Page Translation File | . | M | 2.17.00 | 636 |
| CPX | FlashPix Bitmap | Y | H | 2.17.00 | 740 |
| CPX | FlashPix Bitmap (MacBinary) | . | M | 2.16.00 | 512 |
| CR2 | Canon Digital Camera RAW Image (CR) | . | M | 2.19.00 | 2789 |
| CRD | MS Windows Card File (Win 3.x) | . | M | 2.14.00 | 2321 |
| CRD | MS Windows Card File (Win NT) | Y | M | 1.00.00 | 117 |
| CRE | Infinity Game Engine Creature Descript | . | M | 2.10.00 | 1871 |
| CREATIVEPROJ | HP Digital Imaging Project | . | H | 2.14.00 | 2240 |
| CREATIVETEMPL | HP Digital Imaging Template | . | H | 2.14.00 | 2241 |
| CRL | VeriSign Security Certificate | . | M | 2.07.00 | 615 |
| CRP | Corel Presents Run-Time Presentation | . | L | 2.00.00 | 637 |
| CRT | VeriSign Security Certificate | . | M | 2.07.00 | 615 |
| CRT | x509 Security Certificate | . | M | 2.21.00 | 2984 |
| CRT | x509v3 Security Certificate | . | M | 2.21.00 | 2985 |
| CRU | CRUSH Compressed Archive | . | M | 2.07.00 | 1428 |
| CRUSH | CRUSH Compressed Archive | . | M | 2.07.00 | 1428 |
| CRV | Corel PhotoPaint Tone Curve | . | M | 2.07.00 | 1380 |
| CRW | Canon Digital Camera RAW Image (CCDR) | . | M | 2.10.00 | 1824 |
| CRYPT | Cryptx Encrypted File | . | M | 2.21.00 | 2986 |
| CRYPTX | Cryptx Encrypted File | . | M | 2.21.00 | 2986 |
| CS | MS C# Source Code | . | M | 2.23.00 | 1808 |
| CSC | BASIC Script/Source Code | . | H | 2.22.00 | 28 |
| CSC | Corel Script | . | M | 2.03.06 | 638 |
| CSD | Csound Unified File Format for Orchestras and Scores | . | M | 2.21.00 | 2987 |
| CSDPROJ | MS C#.NET Project | . | M | 2.23.00 | 554 |
| CSDPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| CSF | Brava Reader Content Sealed Format | . | M | 2.10.00 | 1822 |
| CSM | MS Money Support File | . | M | 2.07.00 | 1381 |
| CSO | CISO Compressed ISO CD Image | . | M | 2.19.00 | 2786 |
| CSP | CASLwin Program | . | M | 2.16.00 | 2462 |
| CSP | CommonSpace Document/Template (MacBinary) | . | M | 2.16.00 | 2463 |
| CSPROJ | MS C#.NET Project | . | M | 2.23.00 | 554 |
| CSPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| CSS | Cascading Style Sheet | . | M | 2.05.02 | 415 |
| CST | CommonSpace Document/Template (MacBinary) | . | M | 2.16.00 | 2463 |
| CSV | Character Set View File | . | M | 2.00.00 | 1235 |
| CSV | Comma Separated Values Text File | Y | H | 2.15.00 | 451 |
| CSV | NIST NSRL Hash Database | . | M | 2.07.00 | 1377 |
| CSW | Compressed Square Wave Audio | . | M | 2.21.00 | 2378 |
| CT | Cheat Engine Cheat Table | . | M | 2.17.00 | 640 |
| CT | SciTex ContinuousTone Image(MacBinary) | . | M | 2.09.00 | 1736 |
| CTB | AutoCAD Color-dependent Plot Style Table | . | M | 2.21.00 | 2989 |
| CTF | PhotoSuite Album | . | M | 2.07.00 | 417 |
| CTG | Canon Digital Camera Picture Catalog | . | M | 2.06.00 | 1222 |
| CTG | PhotoSuite Picture Catalog | . | M | 2.06.00 | 1327 |
| CTL | Active Template Library Control | . | M | 2.00.00 | 1228 |
| CTL | Family Tree CD Catalog | . | M | 2.10.00 | 1957 |
| CTL | FaxWorks Control Information | . | L | 2.00.00 | 641 |
| CTL | MS Visual BASIC Form | . | M | 2.23.00 | 1223 |
| CTM | MS Compiled Toolbar Menu | . | M | 2.12.00 | 1945 |
| CTT | MSN Messenger Saved Contact List | . | M | 2.21.00 | 2988 |
| CTX | CACTVS Clear Text File | . | M | 2.10.00 | 516 |
| CTY | Railroad Tycoon Car/Cargo Properties | . | M | 2.08.00 | 1570 |
| CUBE | Gaussian Cube Image | . | M | 2.17.00 | 667 |
| CUE | CD-Image Description File | . | M | 2.14.00 | 2238 |
| CUE | MS Windows Cue Cards | . | M | 2.06.00 | 432 |
| CUR | MS Windows Cursor | Y | H | 2.14.00 | 302 |
| CURSOR | Sun Icon/Cursor Image | . | M | 2.22.00 | 790 |
| CV | MS CodeView Information Screen | . | L | 2.00.00 | 642 |
| CVB | Borland Database Engine Character Set | . | M | 2.07.00 | 1411 |
| CVD | Clam AntiVirus Database | . | M | 2.21.00 | 2990 |
| CVF | Jet-VoiceMail Audio | . | M | 2.21.00 | 2991 |
| CVG | Calamus Vector Graphic Image | . | M | 2.18.00 | 2668 |
| CVP | MS Office FAX Cover Page | . | M | 2.06.00 | 1282 |
| CVR | HP Digital Imaging Cover Page Template | . | M | 2.14.00 | 2235 |
| CVR | MS Windows Fax Cover Page (compiled) | . | M | 2.13.00 | 2162 |
| CW_ | Corel Draw Workspace | . | M | 2.07.00 | 1370 |
| CWK | Claris Works Document | . | M | 2.10.00 | 1823 |
| CWK | Claris Works Document (MacBinary) | . | M | 2.09.00 | 643 |
| CWS | Combustion Workspace Project | . | M | 2.21.00 | 2992 |
| CXF | CTXf Compressed Archive | . | M | 2.14.00 | 1585 |
| CXT | Macromedia Direct Locked Cast Resource | . | L | 2.00.00 | 645 |
| CXT | Macromedia Director Movie (Macintosh) | . | H | 2.17.00 | 169 |
| CYP | Crocodile Physics Simulation | . | M | 2.21.00 | 2993 |
| CZIP | ZipGenius Compressed Archive | . | M | 2.15.00 | 2369 |
| D | GBG DraftMaker Drawing File | . | M | 2.15.00 | 2380 |
| D | SPPACK Audio | . | M | 2.15.00 | 2379 |
| D2S | Diablo II Game Character/Equipment | . | M | 2.07.00 | 1481 |
| D2V | DGIndex Project | . | M | 2.21.00 | 2994 |
| D3D | Corel Dream 3D Model | . | M | 2.07.00 | 1460 |
| D3D | Direct3D Object (Binary) | . | M | 2.06.00 | 1243 |
| D3D | Direct3D Object (Binary) Compressed | . | M | 2.17.00 | 2531 |
| D3D | Direct3D Object (Text) | . | M | 2.17.00 | 2529 |
| D3D | Direct3D Object (Text) Compressed | . | M | 2.17.00 | 2530 |
| D3D | Ray Dream Studio Native Data Format | . | M | 2.11.00 | 2006 |
| DA0 | MS Windows Registry Hive | . | M | 2.00.00 | 101 |
| DAA | PowerISO Direct Access Archive | . | M | 2.19.00 | 2791 |
| DAE | Digital Asset Exchange File | . | H | 2.22.00 | 3038 |
| DAF | Composite Attachment File | . | M | 2.16.01 | 2509 |
| DAT | Act Of War Game Archive | . | M | 2.15.00 | 489 |
| DAT | Allegro Compressed Packfile | . | M | 2.21.00 | 2996 |
| DAT | Allegro Generic Data | . | M | 2.07.00 | 1456 |
| DAT | Allegro Uncompressed Packfile | . | M | 2.21.00 | 2997 |
| DAT | America Online Instant Messenger URL Cache | . | M | 2.10.00 | 1961 |
| DAT | AppleDouble MIME Format | . | M | 2.16.00 | 2439 |
| DAT | Atmos Snapshot | . | M | 2.07.00 | 1455 |
| DAT | AVG 6 Integrity Database | . | M | 2.21.00 | 2998 |
| DAT | BroadJump Character Set Conversion | . | M | 2.14.00 | 1281 |
| DAT | Chuzzle Saved Game | . | M | 2.15.00 | 2354 |
| DAT | Data File (Unknown Source) | . | L | 1.05.00 | 353 |
| DAT | Earthlink Email Filter Rules | . | M | 2.10.00 | 1960 |
| DAT | EasyRecovery Saved Recovery State | . | M | 2.15.00 | 2355 |
| DAT | eFax Localization Data | . | M | 2.10.00 | 1959 |
| DAT | Forensic Toolkit (FTK) Evidence | . | M | 2.07.00 | 1453 |
| DAT | Inno Setup Uninstall Log | . | M | 2.06.00 | 1341 |
| DAT | InstallShield Definition File | . | M | 2.00.00 | 1197 |
| DAT | LabVIEW Binary Datalog | . | M | 2.21.00 | 2999 |
| DAT | Logitech Desktop Messenger User Profile | . | M | 2.18.00 | 605 |
| DAT | McAfee VirusScan Olympus Database | . | M | 2.11.00 | 2085 |
| DAT | Microsoft Network (MSN) Data | . | M | 2.06.00 | 1344 |
| DAT | MS 3D Pinball Data | . | M | 2.06.00 | 1347 |
| DAT | MS Datamap Data | . | M | 2.00.00 | 1226 |
| DAT | MS Forms Cache | . | M | 2.18.00 | 1202 |
| DAT | MS Internet Explorer Cache | . | M | 1.00.00 | 103 |
| DAT | MS Outlook Add-In Extensions Database | . | M | 2.11.00 | 2086 |
| DAT | MS Outlook Rich Text Formatted Message | . | H | 2.22.01 | 1811 |
| DAT | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| DAT | MS Virtual Earth 3D Image | . | M | 2.23.00 | 3314 |
| DAT | MS Visual Studio.NET Strong Name Key | . | M | 2.12.00 | 1805 |
| DAT | MS Windows Client Download Data | . | M | 2.10.00 | 1962 |
| DAT | MS Windows COM+ Library | . | M | 2.15.00 | 1198 |
| DAT | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| DAT | MS Windows Network Service Performance Data | . | M | 2.18.00 | 601 |
| DAT | MS Windows Profile System File | . | M | 2.19.00 | 1232 |
| DAT | MS Windows Registry Hive | . | M | 2.00.00 | 101 |
| DAT | MS Windows Registry Import File | . | M | 2.09.00 | 313 |
| DAT | MS Word for DOS Font | . | M | 1.00.00 | 121 |
| DAT | MSN Messenger Data | . | M | 2.03.06 | 626 |
| DAT | Norton AntiVirus Scan Data | . | M | 2.18.00 | 606 |
| DAT | Norton AntiVirus Scheduled Tasks | . | M | 2.18.00 | 2401 |
| DAT | Norton Disk Doctor Undo | . | M | 2.21.00 | 2931 |
| DAT | Norton Internet Security Definition | . | M | 2.18.00 | 1326 |
| DAT | Norton Virus Definitions | . | M | 2.18.00 | 1201 |
| DAT | Norton Virus Definitions Update Certificate | . | M | 2.18.00 | 608 |
| DAT | Norton Virus Definitions Update Index | . | M | 2.18.00 | 600 |
| DAT | Novell Message File | . | M | 1.00.00 | 34 |
| DAT | Palm OS Address Book | . | M | 2.03.06 | 461 |
| DAT | Palm OS Datebook | . | M | 2.03.06 | 462 |
| DAT | Palm OS Expenses | . | M | 2.03.06 | 1241 |
| DAT | Palm OS Memo Pad | . | M | 2.03.06 | 464 |
| DAT | Palm OS To Do List | . | M | 2.03.06 | 463 |
| DAT | PestPatrol Scan Strings | . | M | 2.07.00 | 1454 |
| DAT | PowerRegister Data | . | M | 2.10.00 | 1953 |
| DAT | QuickBooks for Windows Application Data | . | M | 2.23.00 | 3306 |
| DAT | Quicken Electronic Library | . | M | 2.07.00 | 1309 |
| DAT | Raima Arcserve Database | . | M | 2.14.00 | 1218 |
| DAT | RealJukebox Data File | . | M | 2.11.00 | 2077 |
| DAT | Runtime Software Disk Image | . | M | 2.15.00 | 2356 |
| DAT | Shareaza Thumbnail | . | M | 2.15.00 | 2357 |
| DAT | Skype Conversation | . | M | 2.10.00 | 1935 |
| DAT | Skype Voice Mail | . | M | 2.11.00 | 2079 |
| DAT | StuffIt Mac Archive | . | M | 2.22.01 | 262 |
| DAT | Tachyon Parallel Raytracer 3D Model | . | M | 2.14.00 | 2284 |
| DAT | TomTom Traffic Data | . | M | 2.21.00 | 3000 |
| DAT | UFOCaptureV2 Map | . | M | 2.21.00 | 3001 |
| DAT | UU-Encoded File | Y | H | 2.03.15 | 1109 |
| DAT | VeriSign Security Certificate | . | M | 2.07.00 | 615 |
| DAT | Video CD MPEG Movie | . | H | 2.08.00 | 446 |
| DAT | Walkman NW-S23 MP3 Archive | . | M | 2.15.00 | 1726 |
| DAT | WinImage file | . | M | 2.06.00 | 798 |
| DAT | Yahoo! Anti-Spy Quarantine Index | . | M | 2.11.00 | 2084 |
| DATA | Data File (Unknown Source) | . | L | 1.05.00 | 353 |
| DATA | WBEM Repository Database Support File | . | M | 2.07.00 | 437 |
| DAX | DAKX Compressed Audio | Y | M | 2.09.00 | 1710 |
| DB | Borland Paradox Database | . | M | 2.21.00 | 3002 |
| DB | Content Guard Digital Rights Management Database | . | M | 2.18.00 | 648 |
| DB | ExperVision TypeReader Database | . | M | 2.14.00 | 2237 |
| DB | MS ISAM Database | . | M | 2.07.00 | 1330 |
| DB | MS Windows Icon Cache Database | . | M | 2.11.00 | 1329 |
| DB | MS Windows Vista Icon Cache Database | . | M | 2.17.02 | 2617 |
| DB | MS Works Database (OLE) | Y | H | 2.19.00 | 567 |
| DB | MS Works Database 2 for Mac | . | M | 2.21.00 | 3009 |
| DB | MS Works Database 3 for Mac | . | M | 2.21.00 | 3008 |
| DB | Netscape Certificate/Security Database | . | M | 2.06.00 | 1328 |
| DB | Palm OS Expenses | . | M | 2.03.06 | 1241 |
| DB | Palm OS Zire Photo Database | . | M | 2.21.00 | 2928 |
| DB | Thumbs Plus Database | . | H | 2.17.00 | 1089 |
| DB | XnView Cache Database | . | M | 2.10.00 | 1952 |
| DB1 | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| DB2 | MS Works Database 2 for Mac | . | M | 2.21.00 | 3009 |
| DB3 | MS Works Database 3 for Mac | . | M | 2.21.00 | 3008 |
| DB4 | MS Works for Mac 4 Database/Doc/Sheet (OLE) | Y | H | 2.19.00 | 2757 |
| DBB | Skype Profile and Contacts | . | M | 2.19.00 | 2753 |
| DBC | OrCAD Capture CIS Database Config. | . | M | 1.03.00 | 333 |
| DBF | dBase II Database | Y | H | 2.22.00 | 3157 |
| DBF | dBase III+/FoxBase+ Database (with memo) | Y | H | 2.22.00 | 3150 |
| DBF | dBase III/III+/IV/FoxBase+/FoxPro Database | Y | H | 2.22.00 | 58 |
| DBF | dBase IV Database | Y | H | 2.22.00 | 3152 |
| DBF | dBase IV Database (with memo) | Y | H | 2.22.00 | 3154 |
| DBF | dBase IV Database (with SQL table) | Y | H | 2.22.00 | 3155 |
| DBF | dBase V Database | Y | H | 2.22.00 | 3153 |
| DBF | FlagShip Database (with memo) | Y | H | 2.22.00 | 3156 |
| DBF | FoxBase Database | Y | H | 2.22.00 | 3151 |
| DBF | FoxPro/RealMedia CD Tracks Database | Y | H | 2.22.00 | 1349 |
| DBF | HP Digital Imaging Product Assistant Database | . | M | 2.18.00 | 647 |
| DBF | MS Query Database | . | M | 1.00.00 | 65 |
| DBF | MS Visual FoxPro Database | Y | H | 2.22.00 | 2762 |
| DBF | Psion Series 3 Database | . | M | 2.11.00 | 1997 |
| DBG | MS Debug Information File | . | M | 1.04.01 | 345 |
| DBK | PSpice Capture Design/Library/Symbols | Y | H | 2.17.00 | 331 |
| DBL | Windows Product Activation Database | . | M | 2.13.00 | 2166 |
| DBM | DataEase Database | . | M | 2.16.00 | 2427 |
| DBP | MS Developer Studio Project File | . | M | 1.05.00 | 411 |
| DBW | Symbian World Data File | . | M | 2.23.00 | 3228 |
| DBX | MS Outlook Express Email Folder | . | M | 2.13.00 | 1203 |
| DC | DC Archive | . | M | 2.23.00 | 3078 |
| DC5 | DataCAD Drawing File | . | L | 2.00.00 | 668 |
| DCA | DCA Compressed Archive | . | M | 2.08.00 | 1587 |
| DCD | DesignCAD Drawing | Y | H | 2.17.00 | 2513 |
| DCE | DriveCam Event Video | . | M | 2.19.00 | 2795 |
| DCF | Dell Certification File | . | M | 2.13.00 | 1947 |
| DCM | DCM Music Module | . | M | 2.18.00 | 2669 |
| DCM | DICOM Image | . | M | 2.20.01 | 1550 |
| DCM | DICOM Image (MacBinary) | . | M | 2.16.00 | 2443 |
| DCP | Delphi Compiled Package Code | . | M | 2.17.00 | 532 |
| DCR | Macro Media Director File | . | H | 2.18.01 | 285 |
| DCS | Quark Desktop Color Separation | . | L | 2.00.00 | 669 |
| DCT | Addict Spell Check Dictionary | . | M | 2.06.00 | 1311 |
| DCT | ExperVision TypeReader Dictionary | . | M | 2.14.00 | 521 |
| DCU | Delphi Compiled Unit File | . | M | 2.14.00 | 649 |
| DCX | Paintbrush Multi-Page Fax Bitmap | Y | M | 2.19.00 | 319 |
| DCX | XBase/dBase Compount Index | . | M | 2.06.00 | 1325 |
| DD | Floppy Disk Image (FAT12) | . | H | 2.18.00 | 1473 |
| DD | Floppy Disk Image (FAT16) | . | H | 2.18.00 | 2675 |
| DD | Hard Disk Image (FAT12) | . | H | 2.18.00 | 2676 |
| DD | Hard Disk Image (FAT16) | . | H | 2.18.00 | 2677 |
| DD | Hard Disk Image (FAT32) | . | H | 2.18.00 | 2678 |
| DD | Hard Disk Image (Linux) | . | H | 2.18.00 | 2680 |
| DD | Hard Disk Image (NTFS) | . | H | 2.18.00 | 2679 |
| DD | Hard Disk Image (SysLinux) | . | H | 2.22.00 | 3126 |
| DDD | Adobe Language Database | . | M | 2.13.00 | 433 |
| DDD | DocuFile / EDMICS 2000 | . | M | 2.16.00 | 2466 |
| DDIF | Digital Document Interchange Format Image | . | M | 2.17.00 | 670 |
| DDP | Delphi Diagram Portfolio | . | M | 2.14.00 | 678 |
| DDS | DirectDraw Surface | Y | M | 2.23.00 | 2793 |
| DEB | Debian Linux Package | . | M | 2.22.00 | 2407 |
| DEF | InstallShield Definition File | . | M | 2.00.00 | 1197 |
| DEF | MS Visual C++ Definition File | . | M | 2.13.00 | 355 |
| DEFAULT | MS Windows .NET Application Configuration | . | H | 2.15.00 | 2189 |
| DEM | Descent Demo | . | M | 2.17.00 | 672 |
| DEM | Vista Digital Elevation Model File | . | M | 2.03.06 | 1244 |
| DEP | MS Dependency File | . | M | 2.03.06 | 404 |
| DEP | MS Visual C Dependency File | . | M | 2.00.00 | 1200 |
| DER | VeriSign Security Certificate | . | M | 2.07.00 | 615 |
| DES | File Investigator Data | . | M | 1.00.00 | 149 |
| DES | Quicken Electronic Library | . | M | 2.07.00 | 1309 |
| DESS | Device Emulator System Store | . | M | 2.21.00 | 3022 |
| DEU | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| DEWF | SoundCap/SoundEdit Recorded Instrument | . | L | 2.00.00 | 673 |
| DFF | Dynamic File Format | . | M | 2.18.00 | 2670 |
| DFM | Borland Delphi Form | . | M | 2.18.02 | 2725 |
| DGC | Digital G Codec Archive | . | M | 2.08.00 | 1588 |
| DGM | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| DGN | Microstation CAD Drawing | . | M | 2.22.00 | 674 |
| DGN | Microstation v8 CAD Drawing (OLE) | Y | H | 2.23.00 | 3275 |
| DIB | IBM OS/2 Bitmap | Y | M | 1.05.00 | 287 |
| DIB | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| DIB | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| DIC | MS Spell Checker Dictionary | . | M | 2.03.06 | 414 |
| DIC | MS Spell Checker Dictionary (MacBinary) | . | M | 2.09.00 | 1743 |
| DIC | MS Spell Checker Dictionary (Win95) | . | M | 2.17.00 | 2524 |
| DIC | Symphony Dictionary | . | M | 2.21.00 | 3012 |
| DICM | DICOM Image | . | M | 2.20.01 | 1550 |
| DICM | DICOM Image (MacBinary) | . | M | 2.16.00 | 2443 |
| DICT | MS Virtual PC Language Dictionary | . | M | 2.15.00 | 646 |
| DID | Adobe Language Database | . | M | 2.13.00 | 433 |
| DIF | Data Interchange Format Spreadsheet | . | M | 2.17.02 | 143 |
| DIG | Sound Designer I Audio File | . | M | 2.03.06 | 675 |
| DIGI | Digibooster Music | . | M | 2.17.00 | 2573 |
| DIR | Macromedia Director Movie | . | M | 2.03.06 | 526 |
| DIR | Macromedia Director Movie (Intel) | . | M | 2.04.00 | 271 |
| DIR | Macromedia Director Movie (MacBinary) | . | M | 2.09.00 | 1752 |
| DIR | PFS: 1st Publisher Directory Summary | . | M | 2.07.00 | 1554 |
| DIR | Quicken Data File | . | M | 2.11.00 | 1308 |
| DISCO | MS Visual Studio.NET DB Discovery | . | H | 2.15.00 | 1077 |
| DISCOMAP | MS Visual Studio.NET DB Discovery Map | . | H | 2.13.00 | 2178 |
| DIST | AudioGraph Video (MacBinary) | . | M | 2.16.00 | 2460 |
| DIST | Mac OS X Installer (MacBinary) | . | M | 2.16.00 | 2459 |
| DISTZ | AudioGraph Video (MacBinary) | . | M | 2.16.00 | 2460 |
| DISTZ | Mac OS X Installer (MacBinary) | . | M | 2.16.00 | 2459 |
| DJV | DjVu Document Image | Y | H | 2.23.00 | 1826 |
| DJV | DjVu Document Image (MacBinary) | . | M | 2.16.00 | 511 |
| DJVU | DjVu Document Image | Y | H | 2.23.00 | 1826 |
| DJVU | DjVu Document Image (MacBinary) | . | M | 2.16.00 | 511 |
| DLC | DIGILINEAR Compressed Archive | . | M | 2.08.00 | 1600 |
| DLG | C++ Dialogue Script | . | M | 2.03.06 | 572 |
| DLL | MS Windows .NET Library (32 bit) | Y | H | 2.18.00 | 2686 |
| DLL | MS Windows .NET Library (64 bit) | Y | H | 2.18.00 | 2685 |
| DLL | MS Windows Control Panel Applet | Y | H | 2.03.10 | 296 |
| DLL | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 292 |
| DLL | MS Windows Library (16 bit) | Y | H | 2.03.10 | 291 |
| DLL | MS Windows Library (32 bit) | Y | H | 2.03.10 | 325 |
| DLL | MS Windows Library (64 bit) | Y | H | 2.18.00 | 2684 |
| DLL | OS/2 Library (32 bit) | Y | H | 2.15.00 | 2397 |
| DLL | PowerBuilder Dynamic Library | . | M | 2.03.06 | 927 |
| DLL | PowerBuilder Dynamic Library (MacBinary) | . | M | 2.16.00 | 2504 |
| DLL | Symbian Library | . | M | 2.21.00 | 3035 |
| DLM | MS Speech Recognition Engine Data | . | M | 2.06.00 | 1273 |
| DLS | DownLoadable MIDI Sounds | . | H | 2.07.00 | 676 |
| DLT | CaseMaker AcuBench Layout Structure | . | M | 2.15.00 | 2351 |
| DMD | Data Module Language Dictionary | . | M | 2.13.00 | 2154 |
| DMF | Digitals/Delta Map File | . | M | 2.10.00 | 1827 |
| DMF | Macintosh Disk Image | . | M | 2.03.06 | 1245 |
| DMF | Macintosh Disk Image (MacBinary) | . | M | 2.09.00 | 1801 |
| DMF | MS Windows Disk Map File | . | M | 1.00.00 | 136 |
| DMF | X-Tracker Music Module | . | M | 2.17.00 | 677 |
| DMG | Macintosh Disk Image | . | M | 2.03.06 | 1245 |
| DMG | Macintosh Disk Image (MacBinary) | . | M | 2.09.00 | 1801 |
| DMP | MS Dr. Watson Memory Dump | . | M | 2.13.00 | 1284 |
| DMP | MS Dr. Watson User Dump | . | M | 2.14.00 | 2232 |
| DMP | MS Windows Error Mini Dump | . | M | 2.14.00 | 2231 |
| DMS | Disk Masher Compressed Disk Image | . | M | 2.08.00 | 1601 |
| DNL | DNL Page Turning e-Book | . | M | 2.19.00 | 2792 |
| DOC | DeskMate Document | . | M | 2.19.00 | 2775 |
| DOC | Lotus Works Document | . | M | 2.19.00 | 2761 |
| DOC | MS Compound Document (OLE) | Y | H | 2.17.00 | 274 |
| DOC | MS Rich Text Format Document | Y | H | 2.15.00 | 269 |
| DOC | MS Rich Text Format Document (MacBinary) | . | M | 2.09.00 | 1756 |
| DOC | MS Word Document (XML) | Y | H | 2.03.07 | 1249 |
| DOC | MS Word for DOS/Macintosh Document | Y | H | 1.00.00 | 217 |
| DOC | MS Word for Mac Document (MacBinary) | . | M | 2.09.00 | 1761 |
| DOC | MS Word for Macintosh Document | Y | M | 2.21.00 | 216 |
| DOC | MS Word for OS/2 Document | . | M | 2.19.00 | 2763 |
| DOC | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| DOC | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| DOC | MS Write / Word Backup | Y | H | 2.17.00 | 1136 |
| DOC | MultiMate Document | . | H | 2.19.00 | 122 |
| DOC | Pagestream Document | Y | H | 2.18.00 | 2315 |
| DOC | Perfect Office Document | . | M | 2.17.00 | 2603 |
| DOC | PFS: First Choice Document | . | M | 2.21.00 | 3003 |
| DOC | Text File | Y | H | 2.22.00 | 3 |
| DOC | Text File (MacBinary) | . | M | 2.09.00 | 1734 |
| DOC | Text File: Unicode/DoubleByte/UTF-16LE | . | M | 2.10.03 | 1242 |
| DOC | WordPerfect Document | Y | M | 2.22.00 | 157 |
| DOC | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| DOC | WordPerfect Document (Macintosh) | Y | M | 2.22.00 | 2259 |
| DOC | WordPerfect Document (VAX) | Y | M | 2.22.00 | 2260 |
| DOC | WordStar Document | Y | H | 2.19.00 | 458 |
| DOC | WordStar for Windows | Y | H | 2.12.00 | 465 |
| DOCM | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| DOCM | MS Word Document (Open XML) | Y | H | 2.21.00 | 2208 |
| DOCX | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| DOCX | MS Word Document (Open XML) | Y | H | 2.21.00 | 2208 |
| DOR | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| DORE | Dore Raster Image | . | M | 2.22.00 | 2671 |
| DOS | Dell Boot Sector File | . | M | 2.03.06 | 1213 |
| DOT | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| DOT | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| DOT | MS Word Template (MacBinary) | . | M | 2.09.00 | 1760 |
| DOTM | MS Word Document (Open XML) | Y | H | 2.21.00 | 2208 |
| DOTX | MS Word Document (Open XML) | Y | H | 2.21.00 | 2208 |
| DOX | MultiMate Document | . | H | 2.19.00 | 122 |
| DPA | Dpae Archive | . | M | 2.14.00 | 2303 |
| DPD | Ovation Pro Document | . | M | 2.19.00 | 2794 |
| DPF | Dynamic Process Format Design | . | M | 2.18.00 | 2672 |
| DPM | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| DPX | Digital Moving Picture Exchange Bitmap (Intel) | . | M | 2.08.00 | 1671 |
| DPX | Digital Moving Picture Exchange Bitmap (Motorola) | . | M | 2.21.00 | 2923 |
| DR2D | Provector 2D Image | Y | H | 2.18.00 | 2278 |
| DRL | DrazLace IFLI Bitmap (C64) | . | M | 2.08.00 | 1672 |
| DRS | WordPerfect Display Resource | Y | M | 2.22.00 | 2255 |
| DRV | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 290 |
| DRV | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 292 |
| DRV | MS Windows Library (16 bit) | Y | H | 2.03.10 | 291 |
| DRV | Program Overlay | . | M | 1.00.00 | 27 |
| DRW | CADS Planner Drawing | . | M | 2.19.00 | 2778 |
| DRW | Micrografx Designer Drawing | . | M | 2.08.04 | 62 |
| DRY | Dry Archive | . | M | 2.23.00 | 3063 |
| DS4 | Micrografx Designer Image | . | M | 2.07.00 | 681 |
| DSF | Micrografx Designer Image | . | M | 2.07.00 | 681 |
| DSG | Doom Saved Game | . | M | 2.10.00 | 682 |
| DSK | Arj Archive | . | M | 2.14.00 | 21 |
| DSK | Extended CPCEMU Style Disk Image | . | M | 2.10.00 | 1842 |
| DSK | MSX DOS Disk Image | . | M | 2.10.00 | 1829 |
| DSK | Standard CPCEMU Style Disk Image | . | M | 2.10.00 | 1828 |
| DSK | Turbo Compiler Context File | . | M | 2.06.00 | 1285 |
| DSM | DOS Sound Interface Kit Module Music | . | H | 2.17.00 | 2574 |
| DSM | MS Developer Studio Macro | . | M | 2.13.00 | 683 |
| DSN | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| DSN | PSpice Capture Design/Library/Symbols | Y | H | 2.17.00 | 331 |
| DSP | MS Developer Studio Project File | . | M | 1.05.00 | 411 |
| DSS | Digital Speech Standard Compressed Audio | . | M | 2.15.00 | 2381 |
| DST | Disintegrator Archive | . | M | 2.14.00 | 2304 |
| DST | Home Embroidery Image | . | M | 2.09.00 | 685 |
| DST | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| DSW | MS Developer Studio Workspace | . | M | 2.17.00 | 424 |
| DSX | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| DTA | Data File (Unknown Source) | . | L | 1.05.00 | 353 |
| DTC | MS Windows Application Log | . | M | 2.06.00 | 1286 |
| DTD | DesignTools 2D Design | . | M | 2.21.00 | 2926 |
| DTD | SGML Document Type Definition | . | H | 2.23.00 | 686 |
| DTED | Digital Terrain Elevation Data | . | L | 2.00.00 | 687 |
| DTM | DigiTrakker module | . | M | 2.14.00 | 688 |
| DTS | Dolby Theatre System Audio | . | M | 2.16.00 | 2421 |
| DTS | MS Data Transformation Services | Y | H | 2.17.00 | 2194 |
| DUN | MS Dial-up Networking Export | . | M | 2.00.00 | 689 |
| DV | Digital Video Movie | . | M | 2.22.00 | 690 |
| DVCS | Internet X.509 Public Key DVCS Prot. | . | M | 2.16.00 | 2444 |
| DVD | MyDVD Style Template | . | M | 2.06.00 | 1287 |
| DVF | Compressed Voice File | . | M | 2.08.00 | 1698 |
| DVI | Digital Video Interface Video | . | M | 2.12.00 | 2138 |
| DVI | TeX Device Independent Document | . | M | 2.10.00 | 1830 |
| DVM | DVM Movie | . | M | 2.12.00 | 2102 |
| DVR | Program Overlay | . | M | 1.00.00 | 27 |
| DVR-MS | MS Windows Media Active Streaming File | . | H | 2.19.00 | 1259 |
| DWD | DiamondWare Digitized Audio | . | M | 2.08.00 | 691 |
| DWF | AutoDesk Web Graphics Image | . | M | 2.10.00 | 692 |
| DWG | AutoCAD Drawing | . | M | 2.03.06 | 26 |
| DWG | AutoCAD Drawing (MacBinary) | . | M | 2.09.00 | 1744 |
| DWI | Dependency Walker Image | . | M | 2.10.00 | 1831 |
| DWL | DesignWorks Link | . | M | 2.16.00 | 2412 |
| DWP | Darwin Pond Project | . | M | 2.19.00 | 2796 |
| DWR | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| DXB | AutoCAD Drawing Exchange Binary | . | M | 2.08.00 | 75 |
| DXF | AutoCAD Drawing Exchange (ASCII) | . | M | 2.03.18 | 73 |
| DXF | AutoCAD Drawing Exchange(Binary) | . | M | 2.08.00 | 74 |
| DXR | Macromedia Director Movie (Intel) | . | M | 2.04.00 | 271 |
| DXR | Macromedia Director Movie (Macintosh) | . | H | 2.17.00 | 169 |
| DYL | EPOC16 Dynamic Link Library | . | M | 2.10.00 | 1835 |
| E01 | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| EAC3 | AC-3 / Dolby Digital Audio | . | M | 2.16.00 | 2418 |
| EASM | SolidWorks eDrawings Assembly | . | M | 2.19.00 | 2798 |
| EBO | MS Reader Ebook (EBO) | . | M | 2.07.00 | 1482 |
| EBS | Medical Biosignals Data | . | M | 2.18.00 | 2673 |
| ECARD | Exchange Card | . | M | 2.18.00 | 2674 |
| ECF | Initialization File | . | M | 2.23.00 | 456 |
| ECHR | Explorations RPG System MapGroup Object | . | M | 2.10.00 | 1848 |
| ECW | Enhanced Compressed Wavelet | . | M | 2.08.00 | 1673 |
| ECW | Ensoniq Waveset | . | M | 2.06.00 | 1288 |
| EDA | Ensoniq ASR Disk Image | . | L | 2.00.00 | 694 |
| EDB | Euphoria Database System Database | . | M | 2.10.00 | 1836 |
| edb | McAfee Firewall Log/Database | . | M | 2.07.00 | 1382 |
| EDB | MS Windows Security Configuration Data | . | M | 2.03.06 | 1195 |
| EDD | FrameMaker Element Definition Document | . | L | 2.00.00 | 695 |
| EDK | Ensoniq KT Disk Image | . | L | 2.00.00 | 697 |
| EDL | Edlib FM tracker Module Music | . | M | 2.17.00 | 2575 |
| EDQ | Ensoniq SQ1/SQ2/KS32 Disk Image | . | L | 2.00.00 | 698 |
| EDS | Ensoniq SQ80 Disk Image | . | L | 2.00.00 | 699 |
| EDV | Ensoniq VFX-SD Disk Image | . | L | 2.00.00 | 700 |
| EEG | Westmead EEG File | . | M | 2.18.00 | 2619 |
| EET | Eet Archive | . | M | 2.16.00 | 2437 |
| EFE | Ensoniq EPS Instrument | . | M | 2.15.00 | 696 |
| EFIF | Photo Lab File | . | M | 2.16.00 | 671 |
| EFX | eFax Electronic Fax Document | . | M | 2.15.00 | 1210 |
| EGP | Egrid32 Form Properties Template | . | M | 2.10.00 | 1837 |
| EGR | Egrid32 Form | . | M | 2.10.00 | 1838 |
| EGRP | Explorations RPG System MapGroup Object | . | M | 2.10.00 | 1848 |
| EI | Electric Image File | . | L | 2.00.00 | 701 |
| EIDI | Electric Image File | . | L | 2.00.00 | 701 |
| EIO | EIOffice Document Binder | . | M | 2.10.00 | 1839 |
| EIT | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| ELF | UNIX Program/Program Library (32-bit) | . | M | 2.14.00 | 2264 |
| ELF | UNIX Program/Program Library (64-bit) | . | M | 2.14.00 | 1250 |
| ELM | MS Windows Desktop Theme Elements | . | M | 2.10.00 | 1289 |
| elog | McAfee Firewall Log/Database | . | M | 2.07.00 | 1382 |
| EM | Composite Attachment File | . | M | 2.16.01 | 2509 |
| EMD | Amiga SoundTracker Music | Y | H | 2.18.00 | 1602 |
| EMF | MS Windows Enhanced Metafile | . | M | 2.07.00 | 702 |
| EML | Apple Email Message | Y | H | 2.22.01 | 536 |
| EML | Eudora Email Message | Y | H | 2.22.01 | 933 |
| EML | Evolution Email Message | Y | H | 2.22.01 | 538 |
| EML | Global Message Exchange Email Message | Y | H | 2.22.01 | 540 |
| EML | Gmail Email Message | Y | H | 2.22.01 | 539 |
| EML | Horde Internet Messaging Program (IMP) Email Message | Y | H | 2.22.01 | 542 |
| EML | Hotmail Email Message | Y | H | 2.22.01 | 578 |
| EML | Internet Message | Y | H | 2.22.01 | 703 |
| EML | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| EML | Internet Message (UU-Encoded) | Y | H | 2.22.01 | 1263 |
| EML | Microsoft Mail Email Message | Y | H | 2.22.01 | 545 |
| EML | Microsoft Outlook 2000 IMO Email Message | Y | H | 2.22.01 | 574 |
| EML | MIME HTML Web Page Archive | Y | H | 2.22.01 | 1910 |
| EML | MS Office Outlook 2003 Email Message | Y | H | 2.22.01 | 571 |
| EML | MS Outlook Express Email Message | Y | H | 2.22.01 | 575 |
| EML | MS Outlook Rich Text Formatted Message | . | H | 2.22.01 | 1811 |
| EML | Mutt Email Message | Y | H | 2.22.01 | 546 |
| EML | Open WebMail Email Message | Y | H | 2.22.01 | 550 |
| EML | Pine Email Message | Y | H | 2.22.01 | 577 |
| EML | PKCS #7 Secure MIME Message | . | M | 2.22.01 | 1810 |
| EML | The Bat! Email Message | Y | H | 2.22.01 | 2604 |
| EML | Thunderbird Email Message | Y | H | 2.22.01 | 2605 |
| EML | Yahoo! Mail Email Message | Y | H | 2.22.01 | 2606 |
| ENC | Encore Musical Notation | . | M | 2.19.00 | 2799 |
| ENC | Enhanced Compressor Archive | . | M | 2.14.00 | 470 |
| ENC | Media Safe Encrypted Data | . | M | 2.19.00 | 2797 |
| ENC | MPEG Animation | Y | H | 2.19.00 | 246 |
| ENC | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| ENC | Mujahideen Secrets 2 | . | M | 2.21.00 | 2925 |
| ENC | NetFRAME MPEG 2 Animation | . | M | 1.00.00 | 270 |
| ENC | OpenSSL Encrypted File | . | M | 2.18.00 | 620 |
| ENC | Venturi Client Key | . | M | 2.23.00 | 3303 |
| ENC | Wireless LAN Encrypted Profile | . | M | 2.18.00 | 602 |
| ENC | Xing MPEG Animation | . | H | 2.19.00 | 247 |
| Enn | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| ENT | SGML Document Type Definition | . | H | 2.23.00 | 686 |
| ENU | InfoSoft Localization Database | . | M | 2.07.00 | 1412 |
| ENV | Adobe Linguistics File | . | M | 2.12.05 | 468 |
| ENV | Envoy Document | . | M | 2.07.00 | 251 |
| ENZ | EndNote Connection File | . | M | 2.10.00 | 1845 |
| EOBJ | Explorations RPG System MapGroup Object | . | M | 2.10.00 | 1848 |
| EOC | EncryptOnClick (Encrypted) | Y | H | 2.23.00 | 3178 |
| EPC | EPC Archive | . | M | 2.22.00 | 3081 |
| EPHTML | Enhanced Perl-Parsed HTML | . | L | 2.00.00 | 704 |
| EPI | Encapsulated PostScript Document | Y | H | 2.13.00 | 171 |
| EPI | Encapsulated PostScript Document (MacBinary) | . | M | 2.09.00 | 1732 |
| EPI | Intel Wireless Event Profile Importer | . | M | 2.18.00 | 651 |
| EPP | Extensible Provisioning Protocol | Y | H | 2.16.00 | 2445 |
| EPS | Encapsulated PostScript Document | Y | H | 2.13.00 | 171 |
| EPS | Encapsulated PostScript Document (MacBinary) | . | M | 2.09.00 | 1732 |
| EPS | Encapsulated PostScript Preview | . | M | 2.06.00 | 133 |
| EPS | Quark Desktop Color Separation | . | L | 2.00.00 | 669 |
| EPSF | Encapsulated PostScript Document | Y | H | 2.13.00 | 171 |
| EPSF | Encapsulated PostScript Document (MacBinary) | . | M | 2.09.00 | 1732 |
| EPSF | Encapsulated PostScript Preview | . | M | 2.06.00 | 133 |
| ESN | InfoSoft Localization Database | . | M | 2.07.00 | 1412 |
| ESP | Extension-Sort Packer Archive | . | M | 2.10.00 | 706 |
| ETH | WinPharoah Capture | . | M | 2.07.00 | 1444 |
| EVB | Enhanced Variable Rate Codec Sound-B | . | M | 2.16.00 | 492 |
| EVC | Enhanced Variable Rate Codec Sound | . | M | 2.16.00 | 2508 |
| EVF | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| EVT | MS Event Log | . | M | 2.13.00 | 1185 |
| EVY | Envoy Document | . | M | 2.07.00 | 251 |
| EWB | Electronics Workbench Circuit | . | M | 2.10.00 | 1847 |
| EWF | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| EWL | MS Encarta Document | . | L | 2.00.00 | 707 |
| EX_ | InstallShield Archive | . | M | 1.05.00 | 359 |
| EXC | MS Word Exclusion Dictionary | . | L | 2.00.00 | 708 |
| EXE | Absolute Packager Self Extracting Archive | . | M | 2.10.01 | 1971 |
| EXE | Ace Self Extracting Archive | . | M | 2.22.00 | 3171 |
| EXE | Arc 6.0 MKS Archive | . | M | 1.00.00 | 82 |
| EXE | Arj Self Extracting Archive | . | M | 1.00.00 | 76 |
| EXE | DOS Program | Y | M | 1.00.00 | 15 |
| EXE | Dzip Self Extracting Archive | . | M | 2.22.00 | 3162 |
| EXE | Info- Zip Self Extracting Archive | Y | M | 2.22.00 | 3165 |
| EXE | InstallShield Self Extracting Archive | . | M | 2.22.00 | 3168 |
| EXE | Larc Self Extracting Archive | . | M | 1.00.00 | 78 |
| EXE | LHarc Self Extracting Archive | . | M | 1.00.00 | 36 |
| EXE | LHarc Self Extracting Archive | . | M | 1.00.00 | 80 |
| EXE | LZexe Self Extracting Archive | . | M | 1.00.00 | 79 |
| EXE | Microsoft Installer Self Extracting Archive | . | M | 2.22.00 | 3163 |
| EXE | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| EXE | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| EXE | MS Windows Cabinet Installer Self Extracting Archive | . | M | 2.22.00 | 3170 |
| EXE | MS Windows Control Panel Applet | Y | H | 2.03.10 | 296 |
| EXE | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 290 |
| EXE | MS Windows Library (16 bit) | Y | H | 2.03.10 | 291 |
| EXE | MS Windows Program (16 bit) | Y | H | 2.03.10 | 288 |
| EXE | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| EXE | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| EXE | MS Windows Program (WIN386) | . | H | 2.03.10 | 289 |
| EXE | Nullsoft Self Extracting Archive | . | M | 2.22.00 | 3169 |
| EXE | OS/2 Library (32 bit) | Y | H | 2.15.00 | 2397 |
| EXE | PECompact2 Compressed Executable | . | M | 2.22.00 | 3159 |
| EXE | Petite Compressed Executable | . | M | 2.22.00 | 3160 |
| EXE | PK Arc Self Extracting Archive | . | M | 1.00.00 | 81 |
| EXE | PK Zip Self Extracting Archive | Y | M | 1.00.00 | 283 |
| EXE | PlayStation Executable | . | M | 2.08.00 | 1690 |
| EXE | RAR Self Extracting Archive | . | M | 2.22.00 | 3164 |
| EXE | UPX Compressed Executable | . | M | 2.22.00 | 3158 |
| EXE | WinHki Self Extracting Archive | . | M | 2.22.00 | 3167 |
| EXE | WinZip Self Extracting Archive | . | M | 2.09.02 | 584 |
| EXE | Wise Installer Self Extracting Archive | . | M | 2.22.00 | 3161 |
| EXE | Zzip Self Extracting Archive | . | M | 2.22.00 | 3166 |
| EXP | Javacard API Export File | . | M | 2.14.00 | 2333 |
| EXP | MS Visual C++ DLL Exports File | . | M | 2.14.00 | 368 |
| EXP1 | EXP1 Archive | . | M | 2.22.00 | 3070 |
| EXR | OpenEXR High Dynamic-Range Bitmap | . | M | 2.08.00 | 1674 |
| EYE | Eyemail Video Recording | . | M | 2.19.00 | 2800 |
| F2R | Farandoyle Linear Module File | . | L | 2.00.00 | 709 |
| F3R | Farandoyle Blocked Linear Module | . | L | 2.00.00 | 710 |
| FACE | FaceSave Image | . | M | 2.22.00 | 3039 |
| FACT | Electric Image 3D Image | Y | H | 2.07.00 | 1483 |
| FAL | Q0 Graphic Header | Y | M | 1.00.00 | 190 |
| FANT | Fanta Vision Movie (IFF) | Y | H | 2.17.00 | 2601 |
| FAR | Farandoyle Composer Music Module | . | M | 2.08.00 | 712 |
| FAR | Sims Archive, The | . | M | 2.07.00 | 1603 |
| FAS | AutoCAD Fast-load Auto LISP | . | M | 2.10.00 | 1850 |
| FAV | MS Outlook Navigation Bar | . | M | 2.00.00 | 713 |
| FAX | Facsimile Group 3 Image | . | M | 2.22.00 | 714 |
| FAXX | Atlantis Facsimile Image | . | M | 2.18.00 | 2628 |
| FB | Slim! Compressed Archive | . | M | 2.08.00 | 715 |
| FBK | Family Tree Database | Y | H | 2.17.00 | 1359 |
| FBM | Fuzzy Bitmap Image | . | M | 2.08.00 | 1675 |
| FBX | Autodesk 3D Data Exchange Image | . | M | 2.19.00 | 2803 |
| FCD | Virtual CDROM File | . | M | 2.03.06 | 716 |
| FCP | Final Cut Pro Project | . | M | 2.19.00 | 2804 |
| FCS | Foobar2000 Columns UI Settings | . | M | 2.13.00 | 2153 |
| FDB | Fiasco Database | . | M | 2.17.00 | 717 |
| FDD | Final Draft Document | . | M | 2.10.00 | 1950 |
| FDF | Adobe Acrobat Forms Data Format | . | M | 2.19.00 | 2805 |
| FDF | InstallShield Definition File | . | M | 2.00.00 | 1197 |
| FDR | Final Draft Document | . | M | 2.10.00 | 1950 |
| FEM | CADRE Finite Element Mesh File | . | L | 2.00.00 | 719 |
| FFA | MS Fast Find Index | . | M | 2.10.00 | 720 |
| FFE | DirectInput Force Feedback Effect | . | H | 2.10.00 | 1832 |
| FFF | Gravis UltraSound PnP InterWave Patch | . | M | 2.03.06 | 721 |
| FFIVW | Virtual World Interchange File | . | M | 2.17.00 | 722 |
| FFL | MS Fast Find Index | . | M | 2.10.00 | 720 |
| FFO | MS Fast Find Index | . | M | 2.10.00 | 720 |
| FFT | IBM DCA Final Form Text | . | M | 2.19.00 | 723 |
| FFX | MS Fast Find Index | . | M | 2.10.00 | 720 |
| FGF | Free Graphics Format Image | . | M | 2.16.00 | 2416 |
| FH3 | Freehand 3 Drawing (MacBinary) | . | M | 2.09.00 | 1745 |
| FH5 | Freehand 5 Drawing (MacBinary) | . | M | 2.09.00 | 724 |
| FH8 | Freehand 8 Document | . | M | 2.09.00 | 1551 |
| FH9 | Freehand 9 Document | . | M | 2.23.00 | 3230 |
| FIB | File Investigator Data | . | M | 1.00.00 | 149 |
| FIC | WINDEV Hyper File Database | . | M | 2.12.00 | 2117 |
| FID | File Investigator Data | . | M | 1.00.00 | 149 |
| FIF | Fractal Image File | . | M | 2.08.00 | 725 |
| FIG | Facility for Interactive Generation File | . | M | 2.17.00 | 2596 |
| FIH | File Investigator for DOS Help File | . | M | 2.03.06 | 286 |
| FIH | File Investigator Hash Code Database | Y | H | 2.07.00 | 1376 |
| FII | AutoDesk Animator Flic | Y | M | 1.00.00 | 8 |
| FIL | WordPerfect Overlay | Y | M | 2.22.00 | 2256 |
| FIN | Corel Saved Search | . | M | 2.07.00 | 1383 |
| FINF | Fast Infoset (XML) | Y | H | 2.16.00 | 2446 |
| FIP | File Investigator Data | . | M | 1.00.00 | 149 |
| FIT | Flexible Image Transport System Bitmap | . | M | 2.08.00 | 726 |
| FITS | Flexible Image Transport System Bitmap | . | M | 2.08.00 | 726 |
| FIV | File Investigator BVD Database | . | H | 2.07.00 | 1375 |
| FLA | Flash Movie | Y | H | 2.17.00 | 727 |
| FLA | Flash Movie (MacBinary) | . | M | 2.09.00 | 1770 |
| FLA | Free Lossless Audio Codec | . | M | 2.03.06 | 1246 |
| FLAC | Free Lossless Audio Codec | . | M | 2.03.06 | 1246 |
| FLC | AutoDesk Animator Flic | Y | M | 1.00.00 | 8 |
| FLD | AVS Field Data | . | M | 2.17.00 | 2532 |
| FLF | Figlet Font | . | M | 2.14.00 | 728 |
| FLI | AutoDesk Animator Flic | Y | M | 1.00.00 | 8 |
| FLK | Encrypted Data (Headerless) | . | M | 2.23.00 | 3174 |
| FLM | Animatic Film | . | M | 2.12.00 | 2140 |
| FLM | Stunt Island Film | . | M | 1.00.00 | 54 |
| FLP | Adobe Flash Project | . | M | 2.19.00 | 2802 |
| FLT | Openflight Scene Description 3D Model | . | M | 2.14.00 | 729 |
| FLV | Flash Video | . | M | 2.13.00 | 1188 |
| FLW | Kivio Document | Y | H | 2.21.00 | 2478 |
| FM | FrameMaker Book | . | M | 2.20.00 | 2898 |
| FM | FrameMaker Document | . | M | 2.04.01 | 730 |
| FM3 | Lotus 123 Ver. 3 Format File | . | M | 2.07.00 | 1433 |
| FMB | Oracle Binary Form Source Code | . | M | 2.17.00 | 731 |
| FMF | FileMaker Pro Font | . | M | 2.14.00 | 2212 |
| FML | GetRight File Mirror List | . | L | 2.00.00 | 732 |
| FMP | FileMaker Pro Database | . | M | 2.05.00 | 738 |
| FMP | FileMaker Pro File (MacBinary) | . | M | 2.09.00 | 1746 |
| FMP | FlashPix Bitmap | Y | H | 2.17.00 | 740 |
| FMP | FlashPix Bitmap (MacBinary) | . | M | 2.16.00 | 512 |
| FMT | dBase III+ Screen Format | . | M | 1.00.00 | 59 |
| FMT | GEM Write Format | . | M | 1.00.00 | 89 |
| FMT | Lotus 123 Ver. 4 Format File | . | M | 2.07.00 | 1434 |
| FMX | Oracle Executable Form | . | M | 2.17.00 | 733 |
| FNB | Bitstream Font | . | M | 2.14.00 | 278 |
| FNC | Frogans Document | Y | H | 2.16.00 | 2465 |
| FND | MS Find Saved Search | . | M | 1.01.00 | 257 |
| FNG | Font Navigator Font Group File | . | L | 2.00.00 | 734 |
| FNK | FunkTracker Module | . | M | 2.14.00 | 735 |
| FNT | Descent Font | . | M | 2.17.00 | 528 |
| FNT | Font File (Unknown Source) | . | L | 1.05.00 | 533 |
| FNT | Lotus 123 Font | . | M | 1.00.00 | 96 |
| FNT | MS Font File | . | M | 2.19.00 | 2801 |
| FO | XSL Formatting Objects Form | . | H | 2.20.00 | 2861 |
| FOG | Fontographer Font (MacBinary) | . | M | 2.22.00 | 736 |
| FOL | PFS: First Choice Database | . | M | 2.21.00 | 3004 |
| FON | Dr. Halo Font | . | M | 1.00.00 | 64 |
| FON | Font File (Unknown Source) | . | L | 1.05.00 | 533 |
| FON | MS Windows 3.x System Font | Y | H | 2.03.10 | 297 |
| FON | Telix Phone Book | . | M | 2.14.00 | 2340 |
| FOP | Freedom of the Press File | . | L | 2.00.00 | 737 |
| FOT | MS Windows 3.x System Font | Y | H | 2.03.10 | 297 |
| FP | FileMaker Pro Database | . | M | 2.05.00 | 738 |
| FP | FileMaker Pro File (MacBinary) | . | M | 2.09.00 | 1746 |
| FP1 | Flying Pigs for Windows Data | . | L | 2.00.00 | 739 |
| FP3 | FileMaker Pro Database | . | M | 2.05.00 | 738 |
| FP3 | FileMaker Pro File (MacBinary) | . | M | 2.09.00 | 1746 |
| FP5 | FileMaker Pro Database | . | M | 2.05.00 | 738 |
| FPBM | LightWave 3D FPBM Image | Y | H | 2.18.00 | 2275 |
| FPT | Farandole Composer Pattern | . | M | 2.10.00 | 1849 |
| FPT | FileMaker Pro Database | . | M | 2.05.00 | 738 |
| FPT | FileMaker Pro File (MacBinary) | . | M | 2.09.00 | 1746 |
| FPX | FlashPix Bitmap | Y | H | 2.17.00 | 740 |
| FPX | FlashPix Bitmap (MacBinary) | . | M | 2.16.00 | 512 |
| FRA | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| FRM | dBase III+ Form | . | M | 2.19.00 | 60 |
| FRM | FrameMaker Book | . | M | 2.20.00 | 2898 |
| FRM | FrameMaker Document | . | M | 2.04.01 | 730 |
| FRM | MS Visual BASIC Form | . | M | 2.23.00 | 1223 |
| FRM | MySQL Generic Database Dictionary | . | M | 2.15.00 | 2387 |
| FRM | Phoenix Visual Designer Form | . | M | 2.15.00 | 2388 |
| FRM | Pro/ENGINEER Geographic Image Form | . | M | 2.07.00 | 1555 |
| FRT | MS FoxPro Report File | . | M | 2.00.00 | 741 |
| FRX | MS FoxPro Report File | . | M | 2.00.00 | 741 |
| FRX | MS Visual BASIC Form Index | . | M | 2.18.00 | 1224 |
| FRZ | PC64 Saved-Session Image | . | M | 2.08.00 | 1598 |
| FS | eCos ROM File System Image (ROMFS) | . | M | 2.14.00 | 2336 |
| FSA | ABIF Applied Biosystems Inc. Format | . | M | 2.15.00 | 2346 |
| FSF | fPrint Audit Tool File | . | L | 2.00.00 | 742 |
| FSL | Paradox Form | . | L | 2.00.00 | 743 |
| FSM | Farandoyle Sample File | . | M | 2.08.00 | 744 |
| FSS | PaperPort Slide Show | . | M | 2.07.00 | 356 |
| FST | FutureVision Movie Soundtrack | . | M | 2.18.00 | 2664 |
| FSY | FileSync Profile | . | M | 2.10.00 | 1851 |
| FT | Lotus Notes Full Text Index | . | L | 2.00.00 | 745 |
| FTG | MS Windows Help Full Text Search | . | M | 2.10.00 | 372 |
| FTM | Modular Sound File | Y | M | 1.00.00 | 317 |
| FTR | WinPharoah Filter | . | M | 2.07.00 | 1215 |
| FTS | Flexible Image Transport System Bitmap | . | M | 2.08.00 | 726 |
| FTS | MS Windows Help Full Text Search | . | M | 2.10.00 | 372 |
| FTT | IconAuthor Font Style Template | . | M | 2.07.00 | 1384 |
| FTW | Family Tree Database | Y | H | 2.17.00 | 1359 |
| FTX | TextCraft Document | Y | H | 2.18.00 | 199 |
| FTXT | TextCraft Document | Y | H | 2.18.00 | 199 |
| FUP | FairUse Wizard Project | . | M | 2.10.00 | 1852 |
| FW2 | Framework II File | . | L | 2.00.00 | 746 |
| FW3 | Framework III File | . | L | 2.00.00 | 747 |
| FW4 | Framework IV File | . | L | 2.00.00 | 748 |
| FX | 1944: Battle of the Bulge Game Archive | . | M | 2.15.00 | 2371 |
| FZB | Casio FZ-1 Bank Dump | . | L | 2.00.00 | 750 |
| FZF | Casio FZ-1 Full Dump | . | L | 2.00.00 | 751 |
| FZS | FuzzySheet Document | . | M | 2.16.00 | 2467 |
| FZV | Casio FZ-1 Voice Dump | . | L | 2.00.00 | 752 |
| G3 | Facsimile Group 3 Image | . | M | 2.22.00 | 714 |
| G721 | NeXT/Sun/UNIX Sound CCITT G.721 Raw 4 bit ADPCM | . | M | 2.22.00 | 753 |
| G723 | NeXT/Sun/UNIX Sound CCITT G.723 Raw 3 bit ADPCM | . | M | 2.22.00 | 754 |
| G8 | PictureMaker Green Channel Image Data | . | M | 2.08.00 | 1649 |
| GAB | WINDEV Controls' Styles Description | . | M | 2.12.00 | 2118 |
| GAL | GenePix Array List | . | M | 2.17.00 | 755 |
| GAL | PhotoDeluxe Clipart Gallery | . | M | 1.05.00 | 363 |
| GAM | Games Factory Game | . | M | 2.07.00 | 1485 |
| GAM | Text Adventure Development System Game Data | . | M | 2.23.00 | 1486 |
| GAM | Text Adventure Development System Game Resources | . | M | 2.23.00 | 3180 |
| GAM | Text Adventure Development System Saved Game | . | M | 2.23.00 | 3181 |
| GAM | Vectrex Game | . | M | 2.07.00 | 1484 |
| GAP | PhotoImpact Pencil Style | . | M | 2.06.00 | 396 |
| GAWK | Nawk Programming Languaget | . | M | 2.16.00 | 2408 |
| GBR | GIMP Brush Data | . | M | 2.23.00 | 1856 |
| GBX | Nadeo Games File Format | . | M | 2.10.00 | 1853 |
| GCA | G Compressed Archive | . | M | 2.08.00 | 1604 |
| GCD | Generic CADD Drawing | . | M | 2.10.00 | 756 |
| GCF | Graphing Calculator File | . | M | 2.19.02 | 2806 |
| GCF | WinXComp Grouped Compressed Archive | . | M | 2.08.00 | 1605 |
| GCH | GNU Compiler Collection Precompiled Header | . | M | 2.23.00 | 3236 |
| GCP | Ground Control Point File | . | L | 2.00.00 | 757 |
| GD | RealPlayer Live Channel | . | M | 2.14.00 | 2225 |
| GDB | GVA2000 Author Lecture | . | M | 2.17.00 | 758 |
| GDB | MapSource GPS Waypoint Database | . | M | 2.17.00 | 2517 |
| GDBM | GNU Database Manager File | . | M | 2.16.00 | 2426 |
| GDI | GEM Metafile Image | . | M | 1.00.00 | 87 |
| GDI | GEM Metafile Image (Intel) | . | M | 2.14.00 | 2281 |
| GDI | GEM Metafile Image (Motorola) | . | M | 2.14.00 | 2280 |
| GDL | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| GDM | Bells Whistles and Sound Boards Module Music | . | M | 2.17.00 | 2576 |
| GDP | MS Windows Cabinet Archive | . | M | 2.07.00 | 99 |
| GDP | MS Windows Cabinet Archive (MacBinary) | . | M | 2.16.00 | 2487 |
| GED | Arts & Letters Editor Document | . | M | 1.00.00 | 31 |
| GED | GEDCOM Genealogical Data File | . | M | 2.09.00 | 759 |
| GEM | Atari ST MiNT Program | . | M | 2.14.00 | 2266 |
| GEM | Atari ST TOS Program | . | M | 2.11.00 | 1994 |
| GEM | GEM Metafile Image | . | M | 1.00.00 | 87 |
| GEM | GEM Metafile Image (Intel) | . | M | 2.14.00 | 2281 |
| GEM | GEM Metafile Image (Motorola) | . | M | 2.14.00 | 2280 |
| GEM | GEM VDI Paint Image | Y | M | 1.00.00 | 9 |
| GEN | Ventura Generated Text File | . | L | 2.00.00 | 760 |
| GEO | Videoscape 3D Model with Colored Faces | . | M | 1.00.00 | 306 |
| GEO | Videoscape 3D Model with Colored Verti | . | M | 2.14.00 | 2285 |
| GEO | Videoscape 3D Model with Gouraud Curve | . | M | 2.14.00 | 2287 |
| GEO | Videoscape 3D Model with Light Source | . | M | 2.14.00 | 2286 |
| GEOM | Geom Image | . | M | 2.17.00 | 2533 |
| GETRIGHT | GetRight Unfinished Download | . | L | 2.00.00 | 761 |
| GFA | GFA-BASIC ATARI Tokenized Source | . | M | 2.10.00 | 1855 |
| GFA | GFA-BASIC MS-DOS Tokenized Source | . | M | 2.23.00 | 1854 |
| GFC | Patton&Patton Flowcharting 4 | . | L | 2.00.00 | 762 |
| gfz | Generic Forensic Zip Disk Image (Intel) | . | M | 2.21.00 | 2916 |
| gfz | Generic Forensic Zip Disk Image (Motorola) | . | M | 2.21.00 | 2917 |
| gfzip | Generic Forensic Zip Disk Image (Intel) | . | M | 2.21.00 | 2916 |
| gfzip | Generic Forensic Zip Disk Image (Motorola) | . | M | 2.21.00 | 2917 |
| GID | MS Windows Help File | . | M | 2.19.02 | 115 |
| GIF | Graphics Interchange Format | Y | H | 2.19.00 | 4 |
| GIF | Graphics Interchange Format(MacBinary) | . | M | 2.09.00 | 1747 |
| GIFF | Graphics Interchange Format | Y | H | 2.19.00 | 4 |
| GIFF | Graphics Interchange Format(MacBinary) | . | M | 2.09.00 | 1747 |
| GIS | Erdas Image | Y | M | 1.00.00 | 181 |
| GKS | Gravis GripKey Document | . | L | 2.00.00 | 764 |
| GLF | America Online Data | . | M | 2.06.00 | 1290 |
| GLF | GLF 3D Font | . | M | 2.17.00 | 2534 |
| GLUE | GlueMon Song/Module | . | M | 2.10.00 | 1860 |
| GM | AutoLogic Picture | Y | M | 1.00.00 | 177 |
| GM | Java 2 MIDI Sound Bank | Y | M | 2.06.00 | 1340 |
| GM2 | AutoLogic Picture | Y | M | 1.00.00 | 177 |
| GM4 | AutoLogic Picture | Y | M | 1.00.00 | 177 |
| GME | DexDrive Playstation Memory Card Save | . | M | 2.10.00 | 1861 |
| GMF | USA 98: Streets & Destination Map File | . | M | 1.05.00 | 397 |
| GND | GNUnet Directory | . | M | 2.16.00 | 2417 |
| GNT | Micro Focus Generated Code | . | L | 2.00.00 | 765 |
| GO | GraphOn Graphics File | . | L | 2.00.00 | 766 |
| GOB | Dark Forces Data | . | M | 1.00.00 | 242 |
| GOE | McIDAS System Satellite Image | . | M | 2.08.00 | 1654 |
| GOES | AVHRR Satellite Image | . | M | 2.07.00 | 902 |
| GOES | McIDAS System Satellite Image | . | M | 2.08.00 | 1654 |
| GOULD | Gould Scanner File | . | L | 2.00.00 | 767 |
| GPD | MS Expedia Streets 98 Push-Pins | . | M | 2.14.00 | 2215 |
| GPD | Printer Separator Page | . | M | 2.07.00 | 459 |
| GPG | GnuPG Key Trust Database | . | M | 2.22.00 | 3096 |
| GQ | QLFC Compressed Archive | . | M | 2.08.00 | 1606 |
| GQF | GrafEq Document (MacBinary) | . | M | 2.16.00 | 2471 |
| GQS | GrafEq Document (MacBinary) | . | M | 2.16.00 | 2471 |
| GRA | MS Excel Graph | Y | H | 2.17.00 | 768 |
| GRB | Gridded Binary Image | . | M | 2.10.00 | 770 |
| GRB | MS Windows Program Group | Y | M | 1.00.00 | 113 |
| GRD | Paint Shop Pro Gradient | . | M | 2.10.00 | 1307 |
| GRD | Sierra Game Data File | . | M | 2.00.00 | 1209 |
| GRF | Micrografx Designer Drawing | . | M | 2.08.04 | 62 |
| GRF | MS ActiveMovie Graph File | Y | H | 2.17.00 | 769 |
| GRG | Gringotts Encrypted Data | Y | M | 2.23.00 | 3242 |
| GRIB | Gridded Binary Image | . | M | 2.10.00 | 770 |
| GRO | HP-48/48sx/49 Graphic Object Bitmap | . | M | 2.08.00 | 1676 |
| GRP | DESQview Group | . | M | 1.00.00 | 248 |
| GRP | MS Windows Program Group | Y | M | 1.00.00 | 113 |
| GRP | Object Oriented Graphics Library: 4x4 Transformations (Binary) | . | M | 2.17.00 | 2559 |
| GRP | Object Oriented Graphics Library: Multiple 4x4 Transformations | . | M | 2.17.00 | 2558 |
| GRX | Gravis Xperience Joystick Gameset | . | M | 2.06.00 | 1291 |
| GRZ | GRZip Compressed Archive | . | M | 2.08.00 | 1607 |
| GRZ | GRZip II Compressed Archive | . | M | 2.08.00 | 1608 |
| GSD | Graphtec Vector Graphics Image | . | M | 2.19.02 | 2807 |
| GSM | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| GSM | Raw GSM 6.10 Audio Stream | . | M | 2.22.00 | 771 |
| GT2 | Graoumftracker New Music Module | . | M | 2.14.00 | 772 |
| GTAR | Tape Archive (Compressed with Gzip) | . | M | 2.07.00 | 1088 |
| GTH | Gather Archive | . | M | 2.22.00 | 3068 |
| GTK | Graoumftracker Old Music Module | . | L | 2.00.00 | 773 |
| GTK | GTKtalog Catalog Archive | . | M | 2.23.00 | 3116 |
| GTP | Guitar Pro Tablature | . | M | 2.10.00 | 1862 |
| GTT | Glyph Translation Table | . | M | 2.13.00 | 2160 |
| GUI | Guide Document | . | M | 1.00.00 | 92 |
| GUIDE | AmigaGuide Hypertext Document | . | M | 2.14.00 | 2316 |
| GUL | JungUm Office Document | Y | H | 2.17.00 | 2510 |
| GVP | Google Video Playlist | . | M | 2.19.02 | 2808 |
| GZ | AbiWord Compressed Document | . | M | 2.22.00 | 1515 |
| GZ | GIMP Image | Y | M | 2.23.00 | 1859 |
| GZ | Gzip Unix Archive | . | M | 2.22.00 | 44 |
| GZ | Tape Archive (Compressed with Gzip) | . | M | 2.07.00 | 1088 |
| GZA | GZA Compressed Archive | . | M | 2.08.00 | 1609 |
| H | Active Template Library Template | . | M | 2.00.00 | 1227 |
| H | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| H | Source Code (General) | . | M | 2.23.00 | 1256 |
| H | Source Code Header/Include File | . | M | 2.15.00 | 403 |
| H16 | Source Code Header/Include File | . | M | 2.15.00 | 403 |
| H2O | H2O Compressed Archive | . | M | 2.15.00 | 2370 |
| HAM | Descent Property Resource Data | . | M | 2.17.00 | 785 |
| HAP | HAP Archive | . | M | 2.07.00 | 1429 |
| HASH | EnCase Hash Database | . | M | 2.20.02 | 1385 |
| HBK | Hex Workshop Hex Editor Bookmark | . | M | 2.07.00 | 1487 |
| HCO | Macintosh Sound + Resource Fork | Y | M | 2.03.18 | 17 |
| HCOM | Sound Tools File | . | L | 2.00.00 | 774 |
| HDF | Hierarchical Data Format File (v4) | . | M | 2.10.00 | 775 |
| HDF | Hierarchical Data Format File (v5) | . | M | 2.16.00 | 2411 |
| HDMP | MS Dr. Watson Memory Dump | . | M | 2.13.00 | 1284 |
| HDP | Windows Media (HD) Photo | . | M | 2.21.00 | 2919 |
| HDR | Dell BIOS Image | . | M | 2.23.00 | 3261 |
| HDR | InstallShield 5 Cabinet Archive | . | M | 2.08.00 | 347 |
| HDR | Radiance High Dynamic Range Image | . | M | 2.17.00 | 2568 |
| HDS | MS Digital Rights Management License Store | . | M | 2.21.00 | 3017 |
| HDW | Harvard Graphics Draw Image | . | H | 2.07.00 | 1423 |
| HED | HighEdit Document | . | L | 2.00.00 | 776 |
| HEFS | TurboTax Form (2) | . | M | 2.15.00 | 2398 |
| HEL | MS Hellbender Saved Game | . | L | 2.00.00 | 777 |
| HEX | BinHex Archive | Y | M | 1.00.00 | 259 |
| HEX | BinHex Archive (MacBinary) | . | M | 2.09.00 | 1797 |
| HFP | XnView Filter | . | H | 2.19.00 | 443 |
| HGL | HP Graphics Language Drawing | . | M | 2.07.00 | 778 |
| HGL | HP Graphics Language Drawing (PJL) | Y | H | 2.06.03 | 841 |
| HH? | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| HH? | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| HH? | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| HH? | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| HH? | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| HH? | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| HI | Descent High Scores | . | M | 2.17.00 | 529 |
| HIE | MS Foundation Classes (MFC) Hierarchy | . | M | 2.13.00 | 2176 |
| HITACHI | Hitachi Raster File | . | L | 2.00.00 | 779 |
| HIV | HyperChem Molecule Image | . | M | 2.17.00 | 2535 |
| HJT | TreePad Hypertext Database | . | M | 2.10.00 | 1863 |
| HKE | HashKeeper Hash Database Index | . | M | 2.07.00 | 1475 |
| HKI | WinHki Compressed Archive | . | M | 2.08.00 | 1610 |
| HLF | FAR Manager Help File | . | M | 2.10.00 | 1864 |
| HLP | Help File | . | M | 1.00.00 | 57 |
| HLP | IBM OS/2 2.0 Help | . | M | 1.00.00 | 239 |
| HLP | MS DOS Help | . | M | 1.00.00 | 209 |
| HLP | MS Windows Help File | . | M | 2.19.02 | 115 |
| HLX | Help File | . | M | 1.00.00 | 57 |
| HM | MS Visual Studio Help Context ID Map | . | M | 2.13.00 | 2175 |
| HMEL | Descent Property Resource Interchange | . | M | 2.17.00 | 1102 |
| HMP | Frontier: First Encounters Music | . | M | 2.10.00 | 1865 |
| HMP | WebDesigner Template | . | M | 2.06.00 | 1292 |
| HOG | Descent Mission | . | M | 2.17.00 | 780 |
| HOT | Mosaic Hot List | . | M | 1.00.00 | 310 |
| HPC | Printer Separator Page | . | M | 2.07.00 | 459 |
| HPG | HP Graphics Language Drawing | . | M | 2.07.00 | 778 |
| HPGL | HP Graphics Language Drawing | . | M | 2.07.00 | 778 |
| HPGL | HP Graphics Language Drawing (PJL) | Y | H | 2.06.03 | 841 |
| HPGL | HP Plotter Language Drawing | . | M | 2.23.00 | 941 |
| HPI | Hemera Photo-Object Image | . | M | 2.08.00 | 1651 |
| HPI | Total Annihilation Saved Game | . | M | 2.08.00 | 1652 |
| HPJ | MS Visual Studio Help Project | . | M | 2.13.00 | 781 |
| HPK | Id Software Internal Data 3.0 Hpack | . | M | 1.05.00 | 431 |
| HPP | C++ Program Header | . | L | 2.00.00 | 782 |
| HQX | BinHex Archive | Y | M | 1.00.00 | 259 |
| HQX | BinHex Archive (MacBinary) | . | M | 2.09.00 | 1797 |
| HRC | 4D Creative Model (ASCII) | . | M | 2.14.00 | 2288 |
| HRF | Hitachi Raster Format Image | . | M | 2.08.00 | 1653 |
| HRU | HRU Bitmap | . | M | 2.08.00 | 1655 |
| HSC | HYSYS Simulation | . | M | 2.13.00 | 2174 |
| HSH | HashKeeper Hash Database | . | M | 2.07.00 | 1474 |
| HSP | Help File | . | M | 1.00.00 | 57 |
| HST | History file (Unknown Source) | . | L | 2.00.00 | 783 |
| HST | Netscape Certificate/Security Database | . | M | 2.06.00 | 1328 |
| HT | MS HyperTerminal Shortcut | . | M | 1.00.00 | 312 |
| HT? | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| HT? | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HT? | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| HT? | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| HT? | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| HT? | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| HT? | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| HTA | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HTC | Java Script Source Code File | . | H | 2.23.00 | 401 |
| HTM | Cascading Style Sheet | . | M | 2.05.02 | 415 |
| HTM | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| HTM | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| HTM | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| HTM | HTML + XML Namespace | . | H | 2.16.00 | 488 |
| HTM | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| HTM | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HTM | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| HTM | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| HTM | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| HTM | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| HTM | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| HTM | Java Script Source Code File | . | H | 2.23.00 | 401 |
| HTM | Java Source Code File | . | M | 2.13.00 | 418 |
| HTM | MIME HTML Web Page Archive | Y | H | 2.22.01 | 1910 |
| HTM | MS Excel Spreadsheet (XML) | Y | H | 2.22.00 | 1248 |
| HTM | MS Office Document (XML) | Y | H | 2.03.07 | 1247 |
| HTM | MS PowerPoint Slides (XML) | Y | H | 2.09.00 | 718 |
| HTM | MS Word Document (XML) | Y | H | 2.03.07 | 1249 |
| HTML | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| HTML | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| HTML | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| HTML | HTML + XML Namespace | . | H | 2.16.00 | 488 |
| HTML | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| HTML | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HTML | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| HTML | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| HTML | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| HTML | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| HTML | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| HTML | Java Script Source Code File | . | H | 2.23.00 | 401 |
| HTML | MS Word Document (XML) | Y | H | 2.03.07 | 1249 |
| HTT | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| HTT | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HTT | Java Script Source Code File | . | H | 2.23.00 | 401 |
| HTTP | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| HTTP | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| HTTP | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| HTTP | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| HTTP | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| HTTP | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| HTTP | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| HTX | Extended HTML Template | . | L | 2.00.00 | 784 |
| HUS | Designer I Embroidery Machine Image | . | M | 2.09.00 | 1704 |
| HW3 | Hyperwriter! Document | . | M | 1.00.00 | 84 |
| HWP | Hangul Word Processor Document | . | M | 2.19.00 | 2756 |
| HX? | MS Windows .NET Library (32 bit) | Y | H | 2.18.00 | 2686 |
| HX? | MS Windows .NET Library (64 bit) | Y | H | 2.18.00 | 2685 |
| HX? | MS Windows Library (32 bit) | Y | H | 2.03.10 | 325 |
| HX? | MS Windows Library (64 bit) | Y | H | 2.18.00 | 2684 |
| HXA | MS Help 2 Attributes (XML) | . | H | 2.13.00 | 2171 |
| HXC | MS Help 2 Collection (XML) | . | H | 2.13.00 | 2172 |
| HXD | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| HXH | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| HXK | MS Help 2 Keyword Index (XML) | . | H | 2.13.00 | 2170 |
| HXM | Descent Property Resource Data | . | M | 2.17.00 | 785 |
| HXQ | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| HXR | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| HXT | MS Help 2 Table of Contents (XML) | . | H | 2.13.00 | 2173 |
| HXW | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| HXX | Source Code Header/Include File | . | M | 2.15.00 | 403 |
| HYP | Adobe Linguistics File | . | M | 2.12.05 | 468 |
| HYP | Atari ST Guide Hypertext Document | . | M | 2.14.00 | 2317 |
| HYP | Hyper Archive | . | M | 2.08.00 | 49 |
| I16 | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| I8 | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| I?B | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| IAF | MS Outlook Email Account Settings | . | M | 2.07.00 | 1372 |
| IAX | Image Access eXecutive File | . | L | 2.00.00 | 786 |
| IBD | PDS Picture | . | M | 1.00.00 | 191 |
| IBK | Sound Blaster Instrument Bank | . | M | 1.00.00 | 197 |
| IBT | MS Compress 5.0 Archive | . | M | 2.18.00 | 2667 |
| IBT | MS Compress 6.22 Archive | . | M | 2.18.00 | 2666 |
| IBT | MS Compress Archive | . | M | 2.17.00 | 47 |
| IC1 | Imagic Film/Picture Image | . | M | 2.12.00 | 2142 |
| IC2 | Imagic Film/Picture Image | . | M | 2.12.00 | 2142 |
| IC3 | Imagic Film/Picture Image | . | M | 2.12.00 | 2142 |
| ICA | Citrix Independent Computer Architecture File | . | M | 2.17.00 | 787 |
| ICC | Kodak Color Management System Profile | . | M | 2.21.00 | 1094 |
| ICC | Kodak YCC Printer Image | . | M | 2.12.00 | 788 |
| ICC | MS Image Color Matching Profile | . | M | 2.22.00 | 337 |
| ICE | ICEOWS Compressed Archive | . | M | 2.08.00 | 1611 |
| ICL | Icon Library File | . | L | 2.00.00 | 789 |
| ICM | MS Image Color Matching Profile | . | M | 2.22.00 | 337 |
| ICM | WordPerfect Office Color Correction | . | M | 2.06.00 | 1276 |
| ICN | HP Palmtop 100/200LX Icon | . | M | 2.07.00 | 1488 |
| ICNS | Python Tkinter Library Icons | . | M | 2.07.00 | 445 |
| ICO | MS Windows Icon | Y | H | 2.14.00 | 114 |
| ICO | OS/2 Icon | . | M | 2.08.00 | 1683 |
| ICO | Sun Icon/Cursor Image | . | M | 2.22.00 | 790 |
| ICON | Sun Icon/Cursor Image | . | M | 2.22.00 | 790 |
| ICR | NCSA Interactive Color Raster Image | . | M | 2.17.00 | 791 |
| ICS | Virtual Calendar File | . | M | 2.18.00 | 2072 |
| ICW | MS Internet Connect Wizard (MacBinary) | . | M | 2.09.00 | 1775 |
| ICW | MS Internet Explorer Connection Wizard | . | M | 2.03.06 | 419 |
| ID | Corel Software Identifier/Security | . | M | 2.10.00 | 1966 |
| ID | InterActual Installer Disk Identifier | . | M | 2.04.00 | 1257 |
| ID | MS Datamap Index | . | M | 2.00.00 | 1181 |
| IDB | MS Visual C++ Program Database | . | M | 2.09.00 | 423 |
| IDC | MS Internet Database Connector Documen | . | M | 2.00.00 | 1199 |
| IDD | MS MIDI Instrument Definition (Intel) | . | H | 2.07.00 | 792 |
| IDD | MS MIDI Instrument Definition (Motorola) | . | H | 2.17.00 | 2267 |
| IDE | Borland C++ Project File | . | M | 1.05.00 | 364 |
| IDENTIFIER | Zone Identifier Stream (NTFS ADS) | . | M | 2.20.00 | 2914 |
| IDF | MS MIDI Instrument Definition (Intel) | . | H | 2.07.00 | 792 |
| IDF | MS MIDI Instrument Definition (Motorola) | . | H | 2.17.00 | 2267 |
| IDIF | IXimager Disk Image | . | M | 2.21.00 | 2918 |
| IDL | Active Template Library Template | . | M | 2.00.00 | 1227 |
| IDL | MS Visual C++ Interface Design Lang. | . | M | 2.03.06 | 426 |
| IDL | MS Visual C++ Object Description Lang. | . | M | 2.03.11 | 407 |
| IDQ | Internet Data Query File | . | L | 2.00.00 | 793 |
| IDX | Adobe Acrobat Cache Index | . | M | 2.11.00 | 2083 |
| IDX | America Online Internet Mail | . | M | 2.14.00 | 1333 |
| IDX | Index File (Unknown Source) | . | L | 1.05.00 | 362 |
| IDX | Java Applet Cache Index | . | M | 2.18.00 | 1867 |
| idx | McAfee Firewall Settings | . | M | 2.11.00 | 2080 |
| IDX | MS Outlook Express Email Index | . | M | 1.05.00 | 366 |
| IDX | Quicken QuickFinder Information | . | M | 2.07.00 | 1447 |
| IDX | TimeSink AdGateway | . | M | 2.14.00 | 2223 |
| IEIF | IXimager Disk Image | . | M | 2.21.00 | 2918 |
| IFF | Amiga IFF/16SVX Sound | Y | H | 2.07.00 | 1522 |
| IFF | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| IFF | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| IFF | Audio IFF Compressed Sound | Y | H | 2.08.00 | 1693 |
| IFF | Audio IFF Sound | Y | H | 2.18.00 | 323 |
| IFF | Interchange File Format | Y | H | 2.07.00 | 233 |
| IFF | Phillips Compact Disk Interactive File | . | M | 2.16.00 | 500 |
| IFF | ProWrite Document | Y | H | 1.00.00 | 228 |
| IFF | Simple Musical Score IFF MIDI | Y | H | 1.00.00 | 198 |
| IFF | Sims Game Data, The | . | M | 2.07.00 | 1523 |
| IFF | Sun TAAC Image File | . | L | 2.00.00 | 794 |
| IFF | TextCraft Document | Y | H | 2.18.00 | 199 |
| IFM | Informed Filler Form (MacBinary) | . | M | 2.16.00 | 474 |
| IFO | DVD Video Support File | . | M | 2.00.00 | 1219 |
| IGES | Initial Graphics Exchange Specification | . | M | 2.17.00 | 795 |
| IGF | Inset Systems Metafile | . | L | 2.00.00 | 796 |
| IIF | Informed Interchange Document (MacBinary) | . | M | 2.16.00 | 476 |
| IIF | Intuit Interchange Format Data | . | M | 2.23.00 | 797 |
| IL | BlackBerry Data | . | M | 2.13.00 | 1194 |
| ILBM | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| ILD | International Laser Display Association 2D Image | . | M | 2.17.00 | 2537 |
| ILD | International Laser Display Association 3D Image | . | M | 2.17.00 | 2536 |
| ILD | International Laser Display Association Colour Palette | . | M | 2.17.00 | 2538 |
| ILG | InstallShield Log File | Y | H | 2.17.00 | 1024 |
| ILK | MS Linker Database | . | M | 2.15.00 | 369 |
| ILM | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| ILM | Iomega Loadable Driver Module | . | M | 2.06.00 | 1350 |
| IM? | Digital Video Interface Image | . | M | 2.12.00 | 2139 |
| IMA | WinImage file | . | M | 2.06.00 | 798 |
| IMD | VisioModeler (Infomodeler) | . | M | 2.13.00 | 2163 |
| IMF | Imago Morpheus Module Music | . | M | 2.17.00 | 2577 |
| IMG | ADEX ChromaGraph Image | Y | M | 2.15.00 | 178 |
| IMG | DELL Program Diskette Image | . | M | 2.00.00 | 1229 |
| IMG | Floppy Disk Image (FAT12) | . | H | 2.18.00 | 1473 |
| IMG | Floppy Disk Image (FAT16) | . | H | 2.18.00 | 2675 |
| IMG | GEM Raster Image | . | M | 2.07.00 | 1459 |
| IMG | GEM VDI Paint Image | Y | M | 1.00.00 | 9 |
| IMG | Hard Disk Image (FAT12) | . | H | 2.18.00 | 2676 |
| IMG | Hard Disk Image (FAT16) | . | H | 2.18.00 | 2677 |
| IMG | Hard Disk Image (FAT32) | . | H | 2.18.00 | 2678 |
| IMG | Hard Disk Image (Linux) | . | H | 2.18.00 | 2680 |
| IMG | Hard Disk Image (NTFS) | . | H | 2.18.00 | 2679 |
| IMG | Hard Disk Image (SysLinux) | . | H | 2.22.00 | 3126 |
| IMG | MS Visual Interdev Cache | . | M | 2.07.00 | 535 |
| IMG | NASA Planetary Data Systems Image | . | M | 2.17.00 | 938 |
| IMG | QEMU Qcow Disk Image | . | M | 2.13.00 | 1448 |
| IMG | QEMU Suspend Disk Image | . | M | 2.23.00 | 3260 |
| IMG | Set Bitmap | . | M | 2.07.00 | 1458 |
| IMG | Simple ROM File System Image (ROMFS) | . | M | 2.14.00 | 2334 |
| IMG | Vicar Picture | . | M | 2.15.00 | 2385 |
| IMG | Vivid Ray-Tracer Image | Y | M | 1.00.00 | 182 |
| IMP | Crayola Art Image | . | M | 1.00.00 | 32 |
| IMP | WinIMP Archive | . | M | 2.08.00 | 537 |
| IMY | iMelody Ringtone Sound | . | M | 2.10.00 | 1879 |
| INC | Assembly Source Code File | . | H | 2.09.01 | 1803 |
| INC | MS Visual BASIC Script/Header | . | M | 2.15.00 | 1225 |
| INC | Persistence of Vision Ray-Tracer | . | M | 2.22.00 | 968 |
| INC | Source Code Header/Include File | . | M | 2.15.00 | 403 |
| INCR | MS Visual Studio.NET C# Incr. Build | . | M | 2.09.00 | 1806 |
| IND | America Online Index | . | M | 2.13.00 | 1334 |
| IND | Index File (Unknown Source) | . | L | 1.05.00 | 362 |
| IND | MS Datamap Index | . | M | 2.00.00 | 1205 |
| INDD | Adobe InDesign Document | . | M | 2.19.02 | 2809 |
| Index | Index File (Unknown Source) | . | L | 1.05.00 | 362 |
| INF | IBM OS/2 2.0 Setup Information | . | M | 2.23.00 | 3277 |
| INF | Initialization File | . | M | 2.23.00 | 456 |
| INF | Norton Virus Definitions Update Information | . | M | 2.18.00 | 610 |
| INF | Setup Information | . | M | 2.15.02 | 455 |
| INF | Text File | Y | H | 2.22.00 | 3 |
| INF | Text File: Unicode/DoubleByte/UTF-16LE | . | M | 2.10.03 | 1242 |
| INFINI | Infini-D 3D Image | . | M | 2.17.00 | 2539 |
| INFO | Amiga Workbench Icon | . | M | 2.18.00 | 652 |
| INFO | GNU Info Hypertext Document | . | M | 2.14.00 | 2318 |
| INFO | ZoomBrowser Database Index | . | M | 2.10.00 | 1880 |
| INI | Configuration File (Text) | . | M | 2.00.00 | 352 |
| INI | Initialization File | . | M | 2.23.00 | 456 |
| INI | InstallShield Definition File | . | M | 2.00.00 | 1197 |
| ini | McAfee Firewall Settings | . | M | 2.11.00 | 2080 |
| INI | Setup Information | . | M | 2.15.02 | 455 |
| INI | Symbian Initialization File | . | M | 2.21.00 | 3034 |
| INI | Text File | Y | H | 2.22.00 | 3 |
| INI | Text File (UTF-8) | . | M | 2.03.12 | 1254 |
| INI | Text File: Unicode/DoubleByte/UTF-16LE | . | M | 2.10.03 | 1242 |
| INP | Oracle Form 3.0 Source Code | . | L | 2.00.00 | 799 |
| INS | InstallShield 3.x Archive | . | M | 2.15.00 | 334 |
| INS | InstallShield Install Script | . | M | 2.00.00 | 154 |
| INS | Label Factory Deluxe Install File | . | M | 2.14.00 | 2229 |
| INS | NetWare Installation Start | . | M | 1.00.00 | 83 |
| INS | PUT Compressed Archive | . | M | 2.08.00 | 800 |
| INS | WordPerfect Setup/Installation Data | Y | M | 2.22.00 | 2254 |
| INST | Object Oriented Graphics Library: 4x4 Transformation | . | M | 2.17.00 | 2557 |
| INVENTOR | Open Inventor 3d Scene (ASCII) | . | M | 2.12.00 | 807 |
| INVENTOR | Open Inventor 3d Scene (Binary) | . | M | 2.12.00 | 808 |
| INX | InstallShield Index | . | M | 2.17.00 | 1293 |
| IOF | Findit Document | . | L | 2.00.00 | 801 |
| IPD | BlackBerry Backup File | . | M | 2.13.00 | 2164 |
| IPK | Informed Package Document (MacBinary) | . | M | 2.16.00 | 477 |
| IQY | MS Internet Inquiry File | . | M | 2.00.00 | 802 |
| IRBF | IXimager Disk Image | . | M | 2.21.00 | 2918 |
| IRIS | Open Inventor 3d Scene (ASCII) | . | M | 2.12.00 | 807 |
| IRIS | Open Inventor 3d Scene (Binary) | . | M | 2.12.00 | 808 |
| IRIS | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| IRIT | IRIT 3D Interchange Image | . | M | 2.17.00 | 2542 |
| ISF | Inspiration Concept Map (Flowchart) Document | . | M | 2.19.02 | 2810 |
| ISH | BlackBerry Data | . | M | 2.10.00 | 1183 |
| ISM | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| ISO | ISO 9660 CD-ROM Image (Data Mode 1) | . | M | 2.07.00 | 803 |
| ISS | Longest Journey, The Sound | . | M | 2.09.00 | 1712 |
| ISS | Setup Information | . | M | 2.15.02 | 455 |
| IST | DigiTrakker Instrument | . | M | 2.17.00 | 2571 |
| IST | ImageStyler | . | M | 2.17.00 | 804 |
| ISTG | Imagine Staging Stage Editor File | Y | H | 2.10.00 | 1881 |
| ISU | InstallShield Uninstall Script | . | M | 1.00.00 | 204 |
| IT | Impulse Tracker Music Module | . | M | 2.14.00 | 805 |
| ITA | InfoSoft Localization Database | . | M | 2.07.00 | 1412 |
| ITB | BlackBerry Data | . | M | 2.03.06 | 1180 |
| ITI | Impulse Tracker Music Module | . | M | 2.14.00 | 805 |
| ITL | iTunes Music Database | . | M | 2.19.02 | 2811 |
| ITP | Informed Filler Template (MacBinary) | . | M | 2.16.00 | 475 |
| ITS | Internet Document Set | . | L | 2.00.00 | 806 |
| ITS | MS Help 2 Merged Keyword Index | . | M | 2.18.00 | 1944 |
| ITW | Adobe Acrobat Installer Support File | . | M | 2.10.00 | 1943 |
| IV | Open Inventor 3d Scene (ASCII) | . | M | 2.12.00 | 807 |
| IV | Open Inventor 3d Scene (Binary) | . | M | 2.12.00 | 808 |
| IVB | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| IVF | Indeo Video Format | . | M | 2.19.02 | 2812 |
| IVR | Virtual Reality World (Binary) | . | M | 1.05.00 | 413 |
| IWC | WaveL Wavelet Compressed Bitmap | . | M | 2.08.00 | 1656 |
| IWM | IconAuthor Start File | . | M | 2.07.00 | 438 |
| J | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| J2K | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| JACKSUM | Jacksum Meta-Info Hash Code List | . | M | 2.07.00 | 1489 |
| JAD | Java Application Descriptor | . | M | 2.19.02 | 2813 |
| JAM | Fidonet Message Area Database | . | M | 2.22.00 | 3052 |
| JAM | JAM Archive | . | M | 2.22.00 | 3114 |
| JAM | Jamcracker Tracker Module Music | . | M | 2.17.00 | 2578 |
| JAR | JAR Compressed Archive | . | M | 2.07.00 | 1430 |
| JAR | JARCS Compressed Archive | . | M | 2.07.00 | 1431 |
| JAR | Java Archive | Y | M | 2.12.01 | 1432 |
| JAR | PK Zip Archive | Y | M | 2.03.09 | 12 |
| JAR | PK Zip Archive (Encrypted) | Y | H | 2.23.00 | 3176 |
| JAVA | Java Source Code File | . | M | 2.13.00 | 418 |
| JBF | Paint Shop Pro Image Browser Cache | . | M | 2.00.00 | 810 |
| JBG | JBIG Raster Bitmap | . | M | 2.08.00 | 1657 |
| JCC | Japan Crossword Dmitry Torshin Format | . | M | 2.10.00 | 1882 |
| JDT | Capture Classic Filler Template | Y | H | 2.17.00 | 2514 |
| JEF | Janome NH10000 Sewing Machine Stitch F | . | M | 2.11.00 | 2021 |
| JFI | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JFI | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JFIF | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JFIF | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JHR | Fidonet Message Area Database | . | M | 2.22.00 | 3052 |
| JIF | Jeff's Image Format Bitmap | . | M | 2.08.00 | 1658 |
| JIF | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JIF | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JIG | Jigsaw Game | . | M | 2.10.00 | 1883 |
| JLYT | Job Layout Language Image | . | M | 2.16.00 | 2472 |
| JMP | SAS JMP Discovery Statistics File | . | L | 2.00.00 | 811 |
| JN1 | Jill of the Jungle Data File | . | L | 2.00.00 | 812 |
| JNG | JPEG Network Graphic Bitmap | Y | H | 2.19.00 | 1659 |
| JNT | MS Windows Journal | . | M | 2.17.02 | 2616 |
| JOB | File Investigator Scripts | Y | M | 1.00.00 | 150 |
| JOB | Label Factory Deluxe Job | . | M | 2.14.00 | 2226 |
| JOY | Trackjoy GUS Tracker Module | . | M | 2.10.00 | 1884 |
| JP2 | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| JP2 | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| JPC | JPEG-2000 Code Stream Bitmap | Y | M | 2.14.00 | 1660 |
| JPE | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JPE | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JPEG | HSI JPEG Picture | Y | M | 2.12.00 | 173 |
| JPEG | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JPEG | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JPEG | Still Picture Interchange File Format (SPIFF) | . | M | 2.21.00 | 2921 |
| JPG | HSI JPEG Picture | Y | M | 2.12.00 | 173 |
| JPG | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| JPG | JPEG File Interchange File (MacBinary) | . | M | 2.16.00 | 1733 |
| JPG | JPEG File Interchange File + MAC Resource Fork | Y | H | 2.19.00 | 1332 |
| JPG | Still Picture Interchange File Format (SPIFF) | . | M | 2.21.00 | 2921 |
| JPG2 | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| JPG2 | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| JPM | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| JPM | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| JPX | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| JPX | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| JRC | Jrchive Compressed Archive | . | M | 2.08.00 | 1612 |
| JS | Java Script Source Code File | . | H | 2.23.00 | 401 |
| JS | Java Server Page | . | M | 2.22.00 | 813 |
| JS | Source Code (General) | . | M | 2.23.00 | 1256 |
| JSA | Java Shared Archive | . | M | 2.18.00 | 1948 |
| JSB | JAWS for Windows Script | . | M | 2.07.00 | 1386 |
| JSD | eFax Electronic Fax Document | . | M | 2.15.00 | 1210 |
| JSL | MS J# Source Code | . | M | 2.15.00 | 2394 |
| JSP | Java Server Page | . | M | 2.22.00 | 813 |
| JSP | MS Publisher Job Submission Publication | Y | H | 2.17.00 | 127 |
| JTD | Ichitaro Document | . | M | 2.16.00 | 2436 |
| K25 | Kurzweil 2500 Sample | . | M | 2.22.00 | 814 |
| K7 | DCMO6 Emulator Tape Image | . | M | 2.10.00 | 1843 |
| KAR | Karaoke MIDI File | . | L | 2.00.00 | 815 |
| KARBON | Karbon Document | Y | H | 2.21.00 | 2475 |
| KBD | Keyboard Script Layout | . | M | 2.17.00 | 541 |
| KC | Media Direct Configuration | . | M | 2.18.00 | 663 |
| KC | Norton Virus Definitions | . | M | 2.18.00 | 1201 |
| KDC | Kodak Photo Enhancer Image | . | L | 2.00.00 | 816 |
| KEY | Kaspersky Anti-virus Toolkit Key | . | M | 2.17.00 | 817 |
| KEY | MS Visual Studio.NET Strong Name Key | . | M | 2.12.00 | 1805 |
| KFM | GameBryo Animation | . | M | 2.23.00 | 3235 |
| KFO | KFormula Document | Y | H | 2.21.00 | 2477 |
| KFX | KoFax Group 4 Facsimile Image | . | L | 2.00.00 | 818 |
| KGB | KGB Archiver Compressed Archive | . | M | 2.15.00 | 2372 |
| KIF | Block DCT Compressor Image | . | M | 2.07.00 | 1546 |
| KIZ | Kodak Digital Postcard File | . | L | 2.00.00 | 819 |
| KKW | RoboHELP K-keywords Project Index | . | L | 2.00.00 | 820 |
| KML | Emu48 Emulator Keyboard Configuration | . | M | 2.16.00 | 2468 |
| KML | Google Earth Keyhole Markup Langage | Y | H | 2.16.00 | 2469 |
| KML | Google Earth Keyhole Markup Language (MacBinary) | . | M | 2.16.00 | 2470 |
| KMP | Korg Trinity KeyMaP File | . | L | 2.00.00 | 821 |
| KNT | Keynote Data | . | M | 2.07.00 | 1490 |
| KON | Kontour Document | Y | H | 2.21.00 | 2479 |
| KOZ | Sprint Music Store Phone Music | . | M | 2.15.00 | 2382 |
| KPF | Kettley Publishing Report Template | . | M | 2.14.00 | 2213 |
| KPL | KazaA Playlist | . | M | 2.10.00 | 1887 |
| KPR | KPresenter Document | Y | H | 2.21.00 | 2480 |
| KPT | KPresenter Document | Y | H | 2.21.00 | 2480 |
| KQP | Konica Quality Picture Natv Camera Img | . | L | 2.00.00 | 822 |
| KR1 | Kurzweil 2000 Sample | . | M | 2.06.00 | 823 |
| KRZ | Kurzweil 2000 Sample | . | M | 2.06.00 | 823 |
| KSF | Electronic Arts Game Audio 2 | . | M | 2.18.00 | 2656 |
| KSF | Korg Trinity Sound Sample | . | M | 2.22.00 | 824 |
| KSP | KSpread Document | Y | H | 2.21.00 | 2481 |
| KWD | KWord Document / Template | Y | H | 2.21.00 | 2482 |
| KWT | KWord Document / Template | Y | H | 2.21.00 | 2482 |
| KXS | Kexis Lossless Compressed Audio | . | M | 2.09.00 | 1713 |
| KYE | Kye Game Data | . | M | 2.03.06 | 825 |
| L01 | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| L4D | Cinema 4D Layout | . | M | 2.07.00 | 1491 |
| L64 | 64LAN Image | . | M | 2.10.00 | 1888 |
| LA | LA Lossless Compressed Audio | . | M | 2.08.00 | 1701 |
| LAB | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| LAN | Erdas Image | Y | M | 1.00.00 | 181 |
| LAN | NetWare Loadable Module | . | M | 1.00.00 | 203 |
| LB | Low Bitrate Packer Compressed Audio | Y | M | 2.09.00 | 1714 |
| LBC | Internet Low Bit Rate Codec Sound | . | M | 2.16.00 | 493 |
| LBM | Amiga IFF/16SVX Sound | Y | H | 2.07.00 | 1522 |
| LBM | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| LBM | Amiga Interleave File Format Image | Y | H | 1.00.00 | 6 |
| LBR | ACT! 2.0 Document | . | M | 1.00.00 | 205 |
| LBR | LU Archive | . | M | 1.00.00 | 51 |
| LBT | MS FoxPro Labels | . | L | 2.00.00 | 828 |
| LBT | MS FoxPro Report File | . | M | 2.00.00 | 741 |
| LBX | MS FoxPro Labels | . | L | 2.00.00 | 828 |
| LC | MS Office Imaging Language File | . | M | 2.12.00 | 1296 |
| LCO | Railroad Tycoon Locomotive Properties | . | M | 2.08.00 | 1569 |
| LCU | Sybase Localization File | . | M | 2.17.00 | 2523 |
| LDB | MS Access Lock File | . | M | 2.10.03 | 829 |
| LDF | LuraDocument Format Image | . | M | 2.13.00 | 693 |
| LDF | SQL Server Database Changes Log | . | M | 2.07.00 | 1556 |
| LDIF | LDAP Data Interchange Format | . | M | 2.19.02 | 2814 |
| LDL | Corel Paradox Delivered Library | . | L | 2.00.00 | 830 |
| LDO | MS .NET Framework Library Design Object | . | M | 2.07.00 | 1387 |
| LDZ | MS Step by Step Interactive Training | . | M | 2.06.00 | 1275 |
| LEG | Legacy Document | . | M | 2.19.00 | 831 |
| LES | Logitech Entertainment System | . | L | 2.00.00 | 832 |
| LEX | Adobe Acrobat Spelling Lexicon Dictionary | . | M | 2.13.00 | 1338 |
| LEX | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| LEX | WordPerfect Spelling Lexicon Dictionary | . | M | 2.22.00 | 1425 |
| LGC | MS Windows Application Usage Log | . | M | 2.07.00 | 1374 |
| LGD | MS Windows Application Usage Log | . | M | 2.07.00 | 1374 |
| LGG | MS Windows Application Usage Log | . | M | 2.07.00 | 1374 |
| LGO | Modern ListGeo Output Image | . | M | 2.10.00 | 1889 |
| LGO | MS Windows 3.x Logo | . | M | 1.00.00 | 252 |
| LGP | Final Fantasy Game Archive | . | M | 2.15.00 | 629 |
| LGS | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| LHA | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LHD | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LHn | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LHP | MS Windows Help File | . | M | 2.19.02 | 115 |
| LIB | Compiler Library (COFF) | . | M | 2.14.00 | 95 |
| LIB | Compiler Library (MS Basic) | . | M | 2.10.00 | 1890 |
| LIB | InstallShield 3.x Archive | . | M | 2.15.00 | 334 |
| LIB | Intellifont Scalable Typeface | . | M | 2.14.00 | 2323 |
| LIC | America Online License | . | M | 2.07.00 | 1388 |
| LICENSES | MS Visual Studio.NET Licenses | . | M | 2.12.00 | 503 |
| LIF | Lego Image | . | M | 2.23.00 | 3313 |
| LIF | TurboTax DHTML Help Index | . | M | 2.15.00 | 2390 |
| LIM | Limit Compressed Archive | . | M | 2.22.00 | 1614 |
| LIN | DataCAD Line Type File | . | L | 2.00.00 | 834 |
| LIQ | Liquid Tracker Song/Module | . | M | 2.10.00 | 1891 |
| LISP | List Machine Image | . | M | 2.14.00 | 835 |
| LISPM | List Machine Image | . | M | 2.14.00 | 835 |
| LIT | MS Reader Ebook (LIT) | . | M | 2.10.00 | 1892 |
| LIT | Virtual Reality World (Binary) | . | M | 1.05.00 | 413 |
| LIVEREG | Norton AntiVirus Update Session | . | M | 2.14.00 | 2217 |
| LLX | Laplink Exchange Agent | . | L | 2.00.00 | 837 |
| LME | LegglessMusicEditor Sound/Module | . | M | 2.10.00 | 1893 |
| LMP | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| LN03 | DEC LN03+ Sixel Graphic Image | . | M | 2.08.00 | 1065 |
| LNB | Link Notebook File | Y | H | 2.17.00 | 1238 |
| LNG | MaxBlast Language Translation | . | M | 2.06.00 | 1295 |
| LNG | MS Office Imaging Language File | . | M | 2.12.00 | 1296 |
| LNG | Source Edit Language Definition | . | M | 2.11.00 | 2040 |
| LNK | MS Windows Shortcut/Link | . | M | 2.14.00 | 314 |
| Lnn | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| LNX | Atari Lynx ROM Image | . | M | 2.10.00 | 1894 |
| LO_ | MS Windows System Event Log | . | M | 2.04.00 | 1236 |
| LOB | LOB Compressed Archive | . | M | 2.18.00 | 2644 |
| LOC | EasyGPS TerraByte Location | . | M | 2.10.00 | 1895 |
| LOC | McAfee Firewall Neotrace Locations | . | M | 2.07.00 | 1389 |
| LOCA | McAfee Firewall Neotrace Locations | . | M | 2.07.00 | 1389 |
| LOG | Log File (Unknown Source) | . | L | 2.09.00 | 660 |
| LOG | MS Outlook Express Log | . | M | 2.03.06 | 623 |
| LOG | MS Windows Profile System File | . | M | 2.19.00 | 1232 |
| LOG | MS Windows Registry Log | . | M | 2.00.00 | 1237 |
| LOG | MS Windows System Event Log | . | M | 2.04.00 | 1236 |
| LOG | Norton Antivirus Log | . | M | 2.18.00 | 653 |
| LOG | PhotoStudio Image | . | M | 2.07.00 | 1390 |
| LOG | Sierra User Profile | . | M | 2.00.00 | 1217 |
| LOG | Wise Installer Log | . | M | 2.17.00 | 658 |
| LOG | ZoneAlarm Firewall Debug Log | . | M | 2.23.00 | 3179 |
| LOGPAGE | HP Digital Imaging Logical Page Info. | . | H | 2.14.00 | 2242 |
| LPAC | Lossless Predictive Audio Compression | . | M | 2.08.00 | 1363 |
| LPD | Helix Nuts and Bolts File | . | L | 2.00.00 | 838 |
| LPK | License Package | . | M | 2.07.00 | 1469 |
| LQT | Liquid Audio File | . | M | 2.09.00 | 1715 |
| LRC | Intel Video Phone File | . | L | 2.00.00 | 839 |
| LRF | Lotus 123 Font | . | M | 1.00.00 | 96 |
| LSL | Corel Paradox Saved Library | . | L | 2.00.00 | 840 |
| LST | Adobe Color Profile List | . | M | 2.15.00 | 1964 |
| LST | Adobe Font List | . | M | 2.03.06 | 625 |
| LST | America Online Internet Mail | . | M | 2.14.00 | 1333 |
| LST | Flexible Image Transport System Bitmap | . | M | 2.08.00 | 726 |
| LST | List File (Unknown Source) | . | L | 1.05.00 | 544 |
| LTR | PC File Letter / Report | . | M | 2.19.00 | 2774 |
| LTT | SPHERE Speech Recog Lexical Transcript | . | M | 2.09.00 | 1728 |
| LU | ThoughtWing Library Unit File | . | L | 2.00.00 | 842 |
| LVL | Miner Descent/D2 Level Extension | . | L | 2.00.00 | 843 |
| LVP | Intuity AUDIX Multimedia Message | . | M | 2.16.00 | 505 |
| LVP | Intuity AUDIX Multimedia Msg (MacBinary) | . | M | 2.16.00 | 507 |
| LWF | LuraWave Format Image | . | M | 2.08.00 | 1661 |
| LWL | Dymo DLS Label File | . | M | 2.12.00 | 844 |
| LWLO | LightWave 3D Layered Object | Y | H | 2.23.00 | 3244 |
| LWO | LightWave 3D Object | Y | H | 2.18.00 | 845 |
| LWOB | LightWave 3D Object | Y | H | 2.18.00 | 845 |
| LWP | Lotus Word Pro 96/97 Document | . | M | 2.23.00 | 846 |
| LWS | LightWave 3D Scene | Y | H | 2.18.00 | 847 |
| LWSC | LightWave 3D Scene | Y | H | 2.18.00 | 847 |
| LXA | MS Speech Recognition Engine Data | . | M | 2.06.00 | 1273 |
| LYR | DataCAD Layer File | . | L | 2.00.00 | 848 |
| LYR | Lyra MIDI Music | . | M | 1.00.00 | 108 |
| LZA | LZA Animation/Video | . | M | 2.12.00 | 2103 |
| LZH | Larc Archive | . | M | 1.00.00 | 52 |
| LZH | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LZH | SCO Compressed Archive | . | M | 2.22.00 | 3120 |
| LZMA | 7-Zip Archive | . | M | 2.07.00 | 1519 |
| LZMA | LZMA Compressed Archive | . | M | 2.19.02 | 2815 |
| LZn | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LZO | lzop Compressed Archive | . | M | 2.08.00 | 1615 |
| LZS | Larc Archive | . | M | 1.00.00 | 52 |
| LZS | LHarc Compressed Archive | . | M | 2.22.00 | 50 |
| LZS | LZS221 Archive | . | M | 2.22.00 | 3069 |
| LZS | Skyroads Data File | . | L | 2.00.00 | 849 |
| LZX | LZX Archive | . | M | 2.14.00 | 471 |
| M | Deluxe Paint Mono-Colour Font | . | M | 2.14.00 | 2324 |
| M00 | ComputerEyes Animation | Y | M | 2.18.01 | 167 |
| M01 | ComputerEyes Animation | Y | M | 2.18.01 | 167 |
| M02 | ComputerEyes Animation | Y | M | 2.18.01 | 167 |
| M1V | MPEG Animation | Y | H | 2.19.00 | 246 |
| M1V | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| M1V | Xing MPEG Animation | . | H | 2.19.00 | 247 |
| M2V | MPEG Animation | Y | H | 2.19.00 | 246 |
| M3D | Corel Motion 3D Animation | . | L | 2.00.00 | 850 |
| M3U | Winamp MP3 Playlist | . | M | 2.07.00 | 1497 |
| M4A | Apple MPEG-4 ALE Audio | . | M | 2.07.00 | 1530 |
| ma | Maya 3D Image (binary) | . | M | 2.14.00 | 2273 |
| ma | Maya 3D model (ascii) | . | M | 2.14.00 | 2289 |
| MAB | Mozilla Address Book | . | M | 2.19.02 | 2817 |
| MAC | MacBinary (Mac Data + Resource Fork) | Y | H | 2.15.00 | 13 |
| MAC | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| MAC | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| MAC | PFS: 1st Publisher Macro | . | M | 1.00.00 | 128 |
| MAC | SuperKey Macro | . | M | 1.00.00 | 144 |
| MACP | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| MACP | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| MAD | MS Access Module | . | L | 2.00.00 | 851 |
| MAF | MS Access Form | . | L | 2.00.00 | 852 |
| MAFF | MIME HTML Web Page Archive | Y | H | 2.22.01 | 1910 |
| MAIL | America Online Personal File Cabinet | . | M | 2.16.00 | 1335 |
| MAK | Source Code Make File | . | M | 2.13.00 | 405 |
| MAM | MS Access Macro | . | L | 2.00.00 | 854 |
| MAN | Manual Page Output | . | L | 2.00.00 | 855 |
| MAN | MS Windows Policy | . | H | 2.15.00 | 299 |
| MAN | MS Windows Visual Stylesheet (XML) | . | H | 2.15.00 | 2177 |
| MANIFEST | MS Windows Visual Stylesheet (XML) | . | H | 2.15.00 | 2177 |
| MAP | Hex Workshop Hex Editor Character Map | . | M | 2.10.00 | 1896 |
| MAP | MapInfo Map | . | M | 2.00.00 | 1196 |
| MAP | MS Visual Studio.NET Cache | . | M | 2.17.00 | 2522 |
| MAP | MS Visual Studio.NET DB Discovery Map | . | H | 2.13.00 | 2178 |
| MAP | OziExplorer Map | . | M | 2.13.00 | 2179 |
| MAP | PhotoImpact Color Map | . | M | 1.05.00 | 392 |
| MAP | Time Line File | . | M | 1.00.00 | 147 |
| MAP | WBEM Repository Database Map | . | M | 2.11.00 | 2082 |
| MAPPING | QuickTime Data | . | M | 2.10.00 | 1297 |
| MAQ | MS Access Query | . | L | 2.00.00 | 856 |
| MAR | MAR Archive | . | M | 2.22.00 | 3057 |
| MAR | Microsoft Network (MSN) Archive | . | M | 2.06.00 | 1343 |
| MAR | Mozilla Archive | . | M | 2.15.00 | 857 |
| MAS | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| MAS | Lotus Freelance Graphics Smartmaster Look | . | H | 2.19.00 | 858 |
| MASTER | ASP.NET Master Page | . | M | 2.23.00 | 3311 |
| MAUD | MAUD Audio Sample | Y | H | 2.18.00 | 2586 |
| MAX | PaperPort Scanned Image | . | H | 2.19.00 | 383 |
| MAX | PS2 Powersave File | . | M | 2.17.00 | 859 |
| MAZ | MS Hover Maze Data | . | L | 2.00.00 | 860 |
| MB | Paradox Memo Holder | . | M | 2.21.00 | 3018 |
| MB1 | Monster Bash Data File | . | L | 2.00.00 | 861 |
| MBK | Norton Spam Definitions | . | M | 2.18.00 | 2400 |
| MBK | STOS Animation Bank | . | M | 2.18.00 | 2657 |
| MBM | Symbian Multi BitMap Image | . | M | 2.23.00 | 1662 |
| MBOX | Berkeley UNIX Mailbox Format | . | H | 2.22.01 | 862 |
| MBX | Berkeley UNIX Mailbox Format | . | H | 2.22.01 | 862 |
| MBX | Eudora Mailbox | . | M | 2.22.00 | 863 |
| MBX | MBX Mail Folder | . | M | 2.22.00 | 3050 |
| MBX | MS Outlook Express Email Folder | . | M | 1.05.00 | 365 |
| MC4D | Cinema 4D V4 Data | Y | H | 2.18.00 | 2290 |
| MCA | Micrognosis Compressed Archive | . | M | 2.08.00 | 1616 |
| MCC | MS Network Shortcut | Y | H | 2.17.00 | 237 |
| MCD | Bleem! Memory Card Save | . | M | 2.10.00 | 1897 |
| MCD | MathCaD Document | . | M | 2.10.00 | 1898 |
| MCF | Media Container Format File | . | M | 2.10.00 | 1900 |
| MCF | TMPGEnc Conversion Template | . | M | 2.10.00 | 1901 |
| MCH | Xtra Cache File | . | M | 2.06.00 | 1298 |
| MCP | WaveZIP Lossless Compressed Audio | . | M | 2.07.00 | 1531 |
| MCQ | McAfee VirusScan Quarantined File | . | M | 2.06.00 | 1299 |
| MCR | DataCAD Keyboard Macro | . | L | 2.00.00 | 864 |
| MCR | PhotoStudio Macro | . | M | 2.10.00 | 1963 |
| MCW | MS Word for Mac Document (MacBinary) | . | M | 2.09.00 | 1761 |
| MCW | MS Word for Macintosh Document | Y | M | 2.21.00 | 216 |
| MD | MDCD Compressed Archive | . | M | 2.22.00 | 1617 |
| MD2 | Player Model (Quake 2) | . | M | 2.10.00 | 1902 |
| MD3 | Arena Model (Quake 3) | . | M | 2.10.00 | 1903 |
| MDA | MicroDesign Area Image | . | M | 2.08.00 | 1663 |
| MDA | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| MDB | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| MDE | MS Access Database | . | L | 2.00.00 | 865 |
| MDE | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| MDF | SQL Server Master Database | . | M | 2.13.00 | 519 |
| MDI | Office Document Imaging File | . | M | 2.10.00 | 1904 |
| MDI | Standard Midi Sequencer Music | Y | H | 2.07.00 | 240 |
| MDL | DigiTrakker module | . | M | 2.14.00 | 688 |
| MDL | Id Software Game Model | . | M | 1.05.00 | 386 |
| MDL | MDL 3d Image (Binary) | . | M | 2.17.00 | 2543 |
| MDL | MDL 3d Image (Text) | . | M | 2.17.00 | 2544 |
| MDL | Mighty Draw DOS Library | . | M | 2.10.00 | 1905 |
| MDL | Moray Wireframe Model | . | M | 2.10.00 | 1906 |
| MDL | Simulink Simulation Model | . | M | 2.19.00 | 2768 |
| MDMP | MS Dr. Watson Memory Dump | . | M | 2.13.00 | 1284 |
| MDN | MS Access Blank Database Template | . | L | 2.00.00 | 866 |
| MDP | Mac Draw Pro Image (MacBinary) | . | M | 2.09.00 | 1769 |
| MDP | MicroDesign Page Image | . | M | 2.08.00 | 1664 |
| MDS | Media Descriptor CD Image Index | . | M | 2.10.00 | 1907 |
| MDT | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| MDW | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| MDX | MS Query Database Index | . | M | 2.18.00 | 68 |
| MDZ | MS Access Database Wizard Template | Y | H | 2.17.00 | 327 |
| ME3 | Multimedia Email Message | . | M | 2.10.00 | 1908 |
| MECONTACT | MS Windows Live Contacts | . | M | 2.21.00 | 3020 |
| MED | OctaMED Tracker Module | . | M | 1.00.00 | 318 |
| MESH | Object Oriented Graphics Library: Mesh (ASCII) | . | M | 2.14.00 | 2291 |
| MESH | Object Oriented Graphics Library: Mesh (Binary) | . | M | 2.17.00 | 2548 |
| MET | OS/2 Presentation Manager Metafile | . | H | 2.19.00 | 869 |
| MF | Java Manifest | . | M | 2.10.00 | 1909 |
| MFL | WBEM Managed Object Format | . | M | 2.19.00 | 1234 |
| MFM | VTeX Multiple Master Font Metrics | . | M | 2.13.00 | 2169 |
| MGF | Monarch Graphic Image | . | M | 2.17.00 | 870 |
| MHK | Broderbund Mohawk Archive | . | M | 2.08.00 | 1618 |
| MHT | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| MHT | HyperText Markup Language (MacBinary) | . | M | 2.09.00 | 1771 |
| MHT | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| MHT | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| MHT | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| MHT | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| MHT | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| MHT | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| MHT | MIME HTML Web Page Archive | Y | H | 2.22.01 | 1910 |
| MHTML | MIME HTML Web Page Archive | Y | H | 2.22.01 | 1910 |
| MIB | SNMP MIB Definition | . | M | 2.07.00 | 1557 |
| MIC | MS Image Composer File | . | L | 2.00.00 | 871 |
| MID | Midi Sequencer Music (MacBinary) | . | M | 2.09.00 | 1794 |
| MID | Scalable Polyphony MIDI Music | . | M | 2.16.00 | 496 |
| MID | Standard Midi Sequencer Music | Y | H | 2.07.00 | 240 |
| MIDI | Standard Midi Sequencer Music | Y | H | 2.07.00 | 240 |
| MIF | Earthlink Email Message Index | . | M | 2.11.00 | 874 |
| MIF | FrameMaker Interchange File | . | M | 2.06.00 | 872 |
| MIF | Machine Independent File Format Image | . | M | 2.18.00 | 873 |
| MIFF | Machine Independent File Format Image | . | M | 2.18.00 | 873 |
| MIM | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| MIM | MS Windows Internet Shortcut | . | M | 2.00.00 | 140 |
| MIME | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| MIO | MIO Compressed Audio | . | M | 2.07.00 | 1532 |
| MITSU | Mitsubishi Color Sublimation Printer Image | . | M | 2.17.00 | 875 |
| MIX | MS Picture It! Multilayer Picture | Y | H | 2.17.00 | 1358 |
| MIX | MS Windows Sound Mix | . | M | 1.00.00 | 254 |
| MJ2 | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| MJ2 | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| MJP2 | JPEG-2000 Bitmap Image | . | M | 2.06.00 | 1294 |
| MJP2 | JPEG-2000 Bitmap Image (MacBinary) | . | M | 2.16.00 | 509 |
| MJPG | SDL Motion JPEG Video | . | M | 2.23.00 | 2110 |
| MK | Source Code Make File | . | M | 2.13.00 | 405 |
| MKA | Matroska Video Stream | . | M | 2.10.00 | 1899 |
| MKAV | Matroska Video Stream | . | M | 2.10.00 | 1899 |
| MKV | Matroska Video Stream | . | M | 2.10.00 | 1899 |
| MKW | ACT Lossless Compressed Audio | . | M | 2.07.00 | 1533 |
| ML | Musicline Module Music | . | M | 2.17.00 | 2579 |
| MLH | Kettley Publishing App. Template | . | M | 2.14.00 | 2214 |
| MLI | AutoCAD Material-Library | . | M | 2.10.00 | 1911 |
| MLP | MLP Audio Stream (Intel) | . | M | 2.16.00 | 498 |
| MLP | MLP Audio Stream (Motorola) | . | M | 2.16.00 | 497 |
| MLS | Milestones Project | . | M | 2.19.00 | 2736 |
| MLS | Skype Localization Data | . | M | 2.19.00 | 2737 |
| MMC | MS Office Clip Art | . | M | 2.00.00 | 1192 |
| MMD | OctaMED Tracker Module | . | M | 1.00.00 | 318 |
| MME | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| MMF | Synthetic Music Mobile Application Sound | . | M | 2.10.00 | 877 |
| MML | FrameMaker MML File | . | M | 2.22.00 | 3149 |
| MMM | Adobe Printer Font Metrics | . | M | 2.18.00 | 358 |
| MMM | MS Multi-Media Movie | Y | H | 1.00.00 | 324 |
| MMP | Mindmaper MindManager File | . | L | 2.00.00 | 878 |
| MMZ | MusicMatch Theme File | . | M | 2.10.00 | 1129 |
| MN2 | Descent 2 Mission File | . | L | 2.00.00 | 879 |
| MN? | MS Money Data | . | M | 1.00.00 | 45 |
| MND | Fractal Forge Fractal Parameters | . | M | 2.06.00 | 868 |
| MND | MNI Mandelbrot for Windows File | . | L | 2.00.00 | 880 |
| MNG | Multi-Image Network Graphics Animation | . | H | 2.23.00 | 881 |
| MNI | MNI Mandelbrot for Windows File | . | L | 2.00.00 | 880 |
| Mnn | ComputerEyes Animation | Y | M | 2.18.01 | 167 |
| MNT | MS FoxPro menus | . | L | 2.00.00 | 882 |
| MNT | MS FoxPro Report File | . | M | 2.00.00 | 741 |
| MNU | MS Access Menu File | . | L | 1.05.00 | 548 |
| MNX | MS FoxPro menus | . | L | 2.00.00 | 882 |
| MNY | MS ISAM Database | . | M | 2.07.00 | 1330 |
| MNY | MS Money Data | . | M | 1.00.00 | 45 |
| MOD | Amiga SoundTracker Music | Y | M | 2.16.00 | 16 |
| MOD | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| MOD | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| MOD | MS Windows Program (16 bit) | Y | H | 2.03.10 | 288 |
| MOD | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| MOD | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| MOD | Protracker 3 Module Music | Y | H | 2.18.00 | 2580 |
| MOF | WBEM Managed Object Format | . | M | 2.19.00 | 1234 |
| MOL2 | Tripos MOL2 3D Molecule Image | . | M | 2.17.00 | 2545 |
| MOO | Shockwave Movie Object | . | M | 2.17.00 | 1030 |
| MOP | NS/Elite Display Macro Object Path | . | M | 2.10.00 | 1912 |
| MOR | AnswerWorks Search Glue File | . | M | 2.18.00 | 2720 |
| MOR | WordPerfect Spelling Lexicon Dictionary | . | M | 2.22.00 | 1425 |
| MOR | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| MOV | QuickTime Movie | Y | M | 2.23.00 | 236 |
| MOV | QuickTime Movie (MacBinary) | . | M | 2.09.00 | 1748 |
| MP2 | MPEG Music File (+ID3v1 Tags) | Y | H | 2.19.00 | 349 |
| MP2 | MPEG Music File (+ID3v2 Tags) | Y | H | 2.19.00 | 1239 |
| MP2 | MPEG Music File (MacBinary) | . | M | 2.09.00 | 1749 |
| MP2S | Max Payne Data | . | M | 2.11.00 | 1975 |
| MP2S | Max Payne Saved Game | . | M | 2.11.00 | 1914 |
| MP2T | MPEG 2 Transport Stream | . | M | 2.16.00 | 2424 |
| MP3 | AlbumWrap Music Archive | Y | H | 2.19.00 | 1561 |
| MP3 | MPEG Music File (+ID3v1 Tags) | Y | H | 2.19.00 | 349 |
| MP3 | MPEG Music File (+ID3v2 Tags) | Y | H | 2.19.00 | 1239 |
| MP3 | MPEG Music File (MacBinary) | . | M | 2.09.00 | 1749 |
| MP3 | Sprint Music Store Phone Music | . | M | 2.15.00 | 2382 |
| MP4 | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| MP4 | AAC MPEG-4 Audio | . | M | 2.07.00 | 1534 |
| MP4 | Apple MPEG-4 ALE Audio | . | M | 2.07.00 | 1530 |
| MP4 | MPEG 4 Animation | . | M | 2.16.00 | 2423 |
| MP4 | MPEG 4 Animation (MacBinary) | . | M | 2.16.00 | 2449 |
| MPA | MPEG Animation | Y | H | 2.19.00 | 246 |
| MPA | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| MPC | Musepack Audio | . | M | 2.07.00 | 1535 |
| MPCPL | Media Player Classic (MPC) Playlist | . | M | 2.19.02 | 2818 |
| MPE | MPEG Animation | Y | H | 2.19.00 | 246 |
| MPE | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| MPE | NetFRAME MPEG 2 Animation | . | M | 1.00.00 | 270 |
| MPE | Xing MPEG Animation | . | H | 2.19.00 | 247 |
| MPEG | MPEG 2 Transport Stream | . | M | 2.16.00 | 2424 |
| MPEG | MPEG 4 Animation | . | M | 2.16.00 | 2423 |
| MPEG | MPEG 4 Animation (MacBinary) | . | M | 2.16.00 | 2449 |
| MPEG | MPEG Animation | Y | H | 2.19.00 | 246 |
| MPEG | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| MPEG | NetFRAME MPEG 2 Animation | . | M | 1.00.00 | 270 |
| MPEG | ProgDVBR MPEG2 Video | . | H | 2.19.00 | 2104 |
| MPF | MainActor Project | . | M | 2.11.00 | 450 |
| MPF | McAfee Personal Firewall Data | . | M | 2.11.00 | 2081 |
| MPG | 3GPP Multimedia File | . | M | 2.23.00 | 2096 |
| MPG | MPEG Animation | Y | H | 2.19.00 | 246 |
| MPG | MPEG Animation (MacBinary) | . | M | 2.09.00 | 1750 |
| MPG | NetFRAME MPEG 2 Animation | . | M | 1.00.00 | 270 |
| MPG | ProgDVBR MPEG2 Video | . | H | 2.19.00 | 2104 |
| MPG | Xing MPEG Animation | . | H | 2.19.00 | 247 |
| MPG4 | AAC MPEG-4 Audio | . | M | 2.07.00 | 1534 |
| MPG4 | Apple MPEG-4 ALE Audio | . | M | 2.07.00 | 1530 |
| MPG4 | MPEG 4 Animation | . | M | 2.16.00 | 2423 |
| MPG4 | MPEG 4 Animation (MacBinary) | . | M | 2.16.00 | 2449 |
| MPGA | MPEG Music File (+ID3v1 Tags) | Y | H | 2.19.00 | 349 |
| MPGA | MPEG Music File (+ID3v2 Tags) | Y | H | 2.19.00 | 1239 |
| MPGA | MPEG Music File (MacBinary) | . | M | 2.09.00 | 1749 |
| MPKG | AudioGraph Video (MacBinary) | . | M | 2.16.00 | 2460 |
| MPKG | Mac OS X Installer (MacBinary) | . | M | 2.16.00 | 2459 |
| MPNT | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| MPNT | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| MPP | MS Project File | Y | H | 2.17.00 | 348 |
| MPQ | MoPaQ Archive | . | M | 2.22.00 | 3117 |
| MPR | Lotus Approach Document | Y | H | 2.19.00 | 2512 |
| MPR | MS FoxPro menus (compiled) | . | L | 2.00.00 | 883 |
| MPS | MapSource GPS Mapping Interface | . | M | 2.10.00 | 1913 |
| MPS | Max Payne Data | . | M | 2.11.00 | 1975 |
| MPS | Max Payne Saved Game | . | M | 2.11.00 | 1914 |
| MPS | MPEG Animation | Y | H | 2.19.00 | 246 |
| MPS | Pocket Streets Map | . | M | 2.10.00 | 1915 |
| MPX | MS Project File (ANSI) | . | M | 2.03.09 | 1253 |
| MQV | Sony Movie | . | M | 2.19.02 | 2820 |
| MRF | Portable Monochrome Recursive Format Image | . | M | 2.17.00 | 2592 |
| MRW | Minolta Diamage Raw Image | . | M | 2.10.00 | 1916 |
| MS3D | MilkShape 3D Model | . | M | 2.14.00 | 2292 |
| MSA | Atari MSA Disk Image | . | M | 2.17.00 | 884 |
| MSC | MS Management Console | Y | H | 2.17.00 | 2199 |
| MSC | MS Management Console Snap-in Control | . | M | 2.09.00 | 1711 |
| MSDL | Manchester Scene Description Language | . | M | 2.00.00 | 885 |
| MSF | Earthlink Email Messages | . | M | 2.10.00 | 1937 |
| MSF | Thunderbird Mail Summary File | . | M | 2.19.02 | 2816 |
| MSG | MS Outlook Message | Y | H | 2.19.03 | 148 |
| MSG | Novell Message File | . | M | 1.00.00 | 34 |
| MSG | String Data Resource (Unknown Source) | . | L | 1.05.00 | 378 |
| MSI | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| MSK | Corel Draw Mask | . | H | 2.10.00 | 1420 |
| MSM | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| MSM | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| MSN | Microsoft Network Document | . | L | 2.00.00 | 886 |
| MSO | ActiveMime Object | . | M | 2.17.00 | 583 |
| MSO | MedlySound Sound Module | . | M | 2.10.00 | 1917 |
| MSO | MS Office Macro Reference (OLE) | . | H | 2.17.01 | 591 |
| MSO | MS Office Macro Reference (RAW) | . | M | 2.17.00 | 596 |
| MSP | MS Paint Bitmap | Y | M | 1.00.00 | 7 |
| MSP | MS Windows Upgrade Patch | Y | H | 2.17.00 | 1361 |
| MSS | Music Studio File | . | M | 1.00.00 | 124 |
| MST | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| MSWMM | MS Windows Movie Maker Project | Y | H | 2.17.00 | 2200 |
| MT2 | Madtracker Music Module | . | M | 2.17.00 | 2268 |
| MTD | Digital Sheet Music | . | H | 2.17.00 | 1918 |
| MTI | Madtracker Music Module | . | M | 2.17.00 | 2268 |
| MTJ | Viewpoint Executable (compressed) | . | M | 2.13.00 | 2151 |
| MTJ | Viewpoint Java Script (compressed) | . | M | 2.13.00 | 2152 |
| MTJ | Viewpoint Library (compressed) | . | M | 2.13.00 | 2150 |
| MTL | MTL Material Library | . | M | 2.17.00 | 2546 |
| MTM | MultiTracker Module Music | Y | M | 1.00.00 | 245 |
| MTP | Madtracker Pattern | . | M | 2.17.00 | 2581 |
| MTS | Viewpoint iPix File | . | M | 2.10.00 | 1941 |
| MTV | MTV Video | . | M | 2.17.00 | 887 |
| MTX | Matrix Spreadsheet | . | M | 2.19.00 | 2769 |
| MTX | MS TWAIN Device Temporary File | . | M | 2.13.00 | 1938 |
| MTZ | Viewpoint Scene Attributes (compressed) | . | M | 2.13.00 | 2149 |
| MUS | Finale Music Score | . | M | 2.10.00 | 1919 |
| MUS | MusicTime/Doom Sound | . | M | 2.10.00 | 1920 |
| MUS | Simple Musical Score IFF MIDI | Y | H | 1.00.00 | 198 |
| MV | Alias Wavefront Movie | . | M | 2.17.00 | 2600 |
| MV3 | AUPEC Audio | . | M | 2.07.00 | 1536 |
| MVB | Microsoft Multimedia Viewer File | . | L | 2.00.00 | 888 |
| MVC | Movie Collector Catalog | . | M | 2.19.02 | 2819 |
| MVE | Fanta Vision Movie | . | M | 1.00.00 | 85 |
| MVE | Interplay Movie | . | M | 2.06.00 | 1342 |
| MVE | Wing Commander III MVE Movie | Y | H | 2.12.00 | 2105 |
| MVL | Descent Movie Library | . | M | 2.17.00 | 630 |
| MVS | Musicmatch Visual Slide Show | . | M | 2.06.00 | 1354 |
| MWD | 3D Frogger Game Data | . | M | 2.15.00 | 749 |
| MWF | Medical Waveform Description | . | M | 2.16.00 | 2484 |
| MWF | Medical Waveform Description (MacBinary) | . | M | 2.16.00 | 2485 |
| MWP | Lotus Word Pro 96/97 Document | . | M | 2.23.00 | 846 |
| MWP | Lotus Word Pro 97 Smartmaster | . | L | 2.00.00 | 889 |
| MXF | Material Exchange Format File | . | M | 2.10.00 | 1921 |
| MXF | Material Exchange Format File (MacBinary) | . | M | 2.16.00 | 2450 |
| MXL | Moxcel Spreadsheet | . | M | 2.19.00 | 2770 |
| MXMF | Mobile XMF Music | . | M | 2.16.00 | 494 |
| MXMF | Mobile XMF Music (MacBinary) | . | M | 2.16.00 | 495 |
| MYI | MySQL Database Index | . | M | 2.11.00 | 1974 |
| MZ | MOZART Music Document | . | M | 2.10.00 | 1922 |
| MZF | MediaZip Compressed Archive | . | M | 2.08.00 | 1619 |
| MZP | Java Archive | Y | M | 2.12.01 | 1432 |
| n | Hacha Split File | . | M | 2.17.00 | 1173 |
| NA2 | Netscape Communicator Address Book | . | M | 2.07.00 | 436 |
| NAB | Netscape v3 & v4 Address Book | . | M | 2.23.00 | 3263 |
| NAM | Print Shop/Print Master Images | . | M | 1.00.00 | 137 |
| NAN | Nanoscope File | . | L | 2.00.00 | 890 |
| NAV | MSN Application Extension | . | H | 2.17.00 | 580 |
| NAWK | Nawk Programming Languaget | . | M | 2.16.00 | 2408 |
| NB | WordPerfect Office Notebook | . | M | 1.00.00 | 207 |
| NC | NetCDF CDL Metadata | . | M | 2.21.00 | 2950 |
| NCB | MS Visual C++ Program Database | . | M | 2.09.00 | 423 |
| NCD | CoverDesigner CD Cover Image/Template | . | M | 2.07.00 | 1498 |
| NCD | Norton Utilities Directory Tree | . | M | 1.00.00 | 272 |
| NCF | Lotus Notes Internal Clipboard | . | L | 2.00.00 | 891 |
| NCH | MS Outlook Express Email Tree | . | M | 1.05.00 | 393 |
| NCT | CoverDesigner CD Cover Image/Template | . | M | 2.07.00 | 1498 |
| ND | QuickBooks for Windows Configuration | . | M | 2.23.00 | 3309 |
| NDL | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NDO | Nendo 3D Low-Polygon Modeler | . | L | 2.00.00 | 892 |
| NDS | PC File Index | . | M | 2.19.00 | 2773 |
| NDX | Adobe Acrobat Capture Index | . | M | 2.00.00 | 1221 |
| NDX | dBase Index | . | M | 2.19.00 | 549 |
| NDX | PC File Index | . | M | 2.19.00 | 2773 |
| NDX | SPHERE Speech Recog Lexical Transcript | . | M | 2.09.00 | 1728 |
| NDX | WINDEV Index | . | M | 2.17.00 | 2516 |
| NEO | NeoChrome Bitmap Image | Y | M | 2.12.00 | 893 |
| NES | Nintendo Entertainment System ROM Image | . | M | 2.11.00 | 2010 |
| NET | EPANET Data File | . | M | 2.17.00 | 551 |
| NEWS | NeWS Bitmap Font | . | M | 2.22.00 | 894 |
| NFF | WorldToolKit 3D Neutral File Format | . | M | 2.12.00 | 1373 |
| NGR | MS Speech Recognition Engine Data | . | M | 2.06.00 | 1273 |
| NIF | GameBryo Format File | . | M | 2.10.00 | 1924 |
| NIF | NetImmerse Format File | . | M | 2.10.00 | 1925 |
| NIF | Notation Interchange File Frmt (Intel) | . | M | 2.14.00 | 2271 |
| NIF | Notation Interchng File Fmt (Motorola) | . | H | 2.17.00 | 1926 |
| NIFF | Navy Interchange File Format Image | . | M | 2.16.00 | 2415 |
| NIM | Nokia 9210 Communicator Video | . | M | 2.16.00 | 523 |
| NIST | SPHERE Speech Recognition Waveform | . | M | 2.09.00 | 896 |
| NITF | National Imagery Transmission Format Image v1.0 | . | M | 2.22.00 | 897 |
| NITF | National Imagery Transmission Format Image v2.x | . | M | 2.22.00 | 2930 |
| NK2 | MS Outlook AutoComplete File | . | M | 2.18.00 | 1300 |
| NLB | Oracle 7 Data | . | M | 2.03.06 | 898 |
| NLD | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| NLM | NetWare Loadable Module | . | M | 1.00.00 | 203 |
| NLM | Nokia LogoManager Bitmap | . | M | 2.08.00 | 1665 |
| NLP | MS Language Character Set | . | M | 2.18.00 | 354 |
| NLS | MS Language Character Set | . | M | 2.18.00 | 354 |
| NMF | Lightwave Normal Map | . | M | 2.10.00 | 1927 |
| nn | Hacha Split File | . | M | 2.17.00 | 1173 |
| nnn | MS Operating System Localization DB | . | M | 2.07.00 | 1553 |
| nnn | Norton Virus Definitions | . | M | 2.18.00 | 1201 |
| nnn | Symantec Norton Ghost Disk Backup | . | M | 2.19.04 | 2847 |
| nnn | Trend Micro Pattern File | . | M | 2.17.00 | 2518 |
| NOA | Nancy Codec Video | . | M | 2.12.00 | 2106 |
| NOAA | AVHRR Satellite Image | . | M | 2.07.00 | 902 |
| NOL | Nokia Operator (Manager) Logo Image | . | M | 2.08.00 | 1666 |
| NOT | Musician I File | . | M | 1.00.00 | 125 |
| NPM | Corel Graphics Draw Media Lines | . | M | 2.10.00 | 1928 |
| NPS | Nero Media Player Skin | . | M | 2.15.00 | 2399 |
| NRG | Nero CD/DVD Image | . | M | 2.19.02 | 2821 |
| NRI | Nero ISO CD-ROM Compilation | . | M | 2.15.00 | 2386 |
| NRI | Trickster Online Image | . | M | 2.15.00 | 639 |
| NRV | NRV Archive | . | M | 2.22.00 | 3071 |
| NS# | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NS1 | NetStumbler NS1 Log | . | M | 2.10.00 | 1929 |
| NS2 | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NSA | Nintendo Entertainment System Sound | . | M | 2.14.00 | 1437 |
| NSF | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NSF | Nintendo Entertainment System Sound | . | M | 2.14.00 | 1437 |
| NSG | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NSH | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NSIF | National Imagery Transmission Format Image v1.0 | . | M | 2.22.00 | 897 |
| NSK | NaShrink Archive | . | M | 2.14.00 | 472 |
| NSP | Computerized Speech Lab Audio | Y | M | 2.09.00 | 1717 |
| NST | Amiga SoundTracker Music | Y | M | 2.16.00 | 16 |
| NSV | Nullsoft Streaming Video | . | M | 2.12.00 | 2107 |
| NSX | Apollo Database Engine Index | . | M | 2.10.00 | 1930 |
| NTF | Lotus Notes Database Storage Facility | . | M | 2.13.05 | 900 |
| NTF | National Imagery Transmission Format Image v1.0 | . | M | 2.22.00 | 897 |
| NTF | National Imagery Transmission Format Image v2.x | . | M | 2.22.00 | 2930 |
| NTF | National Transfer Format Map | . | M | 2.10.00 | 1931 |
| NTF | Unicode Translated Fonts | . | M | 2.17.00 | 2521 |
| NTXMAP | Network Exchange Map | . | M | 2.06.00 | 1301 |
| NURBS | Nonlinear Uniform Rational B-Spl | . | L | 2.00.00 | 903 |
| NUT | Lucas Arts Animation | . | M | 1.00.00 | 69 |
| NUV | MythTV NuppelVideo | Y | M | 2.23.00 | 3197 |
| NVC | NeroVision Express Project | . | M | 2.10.00 | 1932 |
| NVF | Nomad II Voice | . | M | 2.09.00 | 1718 |
| NWC | Noteworthy Composer Song | . | M | 2.17.00 | 904 |
| NWS | MS Outlook Express News Message | . | M | 2.22.00 | 457 |
| NXT | NeXT/Sun/UNIX Sound | Y | M | 1.15.00 | 265 |
| NY | Nyquist Plug-in | . | M | 2.10.00 | 1933 |
| O | SCO Unix Driver | . | M | 2.06.00 | 1302 |
| O01 | Typhoon Voice File | . | L | 2.00.00 | 905 |
| O?C | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| O?F | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| O?G | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| O?I | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| O?T | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| OAB | MS Outlook Address Book | . | M | 2.19.02 | 1178 |
| OBD | MS Compound Document (OLE) | Y | H | 2.17.00 | 274 |
| OBD | MS Office Binder Document/Template/Wizard | Y | H | 2.23.00 | 326 |
| OBJ | Advanced Visualizer 3D Object (ASCII) | . | M | 2.17.00 | 1158 |
| OBJ | Compiler Object | . | M | 2.18.00 | 126 |
| OBK | PSpice Capture Design/Library/Symbols | Y | H | 2.17.00 | 331 |
| OBT | MS Office Binder Document/Template/Wizard | Y | H | 2.23.00 | 326 |
| OBZ | MS Office Binder Document/Template/Wizard | Y | H | 2.23.00 | 326 |
| OCX | MS Windows .NET Library (32 bit) | Y | H | 2.18.00 | 2686 |
| OCX | MS Windows .NET Library (64 bit) | Y | H | 2.18.00 | 2685 |
| OCX | MS Windows Library (32 bit) | Y | H | 2.03.10 | 325 |
| OCX | MS Windows Library (64 bit) | Y | H | 2.18.00 | 2684 |
| OD? | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| ODB | OpenOffice Database | Y | H | 2.21.00 | 2615 |
| ODC | OpenDocument Chart | Y | H | 2.21.00 | 2488 |
| ODF | OpenDocument Formula | Y | H | 2.21.00 | 2490 |
| ODG | OpenDocument Graphics | Y | H | 2.21.00 | 2492 |
| ODI | OpenDocument Image | Y | H | 2.21.00 | 2494 |
| ODL | MS Visual C++ Object Description Lang. | . | M | 2.03.11 | 407 |
| ODP | OpenDocument Presentation | Y | H | 2.21.00 | 2496 |
| ODS | OpenDocument Spreadsheet | Y | H | 2.21.00 | 2498 |
| ODT | MindRender VREK Object | . | M | 2.07.00 | 1500 |
| ODT | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| ODT | OpenDocument Text | Y | H | 2.21.00 | 2500 |
| OFF | Object Oriented Graphics Library: Objects (ASCII) | . | M | 2.17.00 | 2551 |
| OFF | Object Oriented Graphics Library: Objects (Binary) | . | M | 2.17.00 | 2552 |
| OFM | OmniForm Form | Y | H | 2.17.00 | 2515 |
| OFR | OptimFROG Encoded Audio | . | M | 2.09.00 | 1719 |
| OFT | MS Outlook Form Template | Y | H | 2.17.00 | 909 |
| OGG | OGG FLAC Compressed Audio | . | M | 2.21.00 | 2922 |
| OGG | OGG Vorbis Compressed Audio | . | M | 2.07.00 | 1537 |
| OGG | OGG Vorbis Compressed Audio (MacBinary) | . | M | 2.16.00 | 2451 |
| OGM | OGG Vorbis Compressed Video | . | M | 2.10.00 | 1934 |
| OKT | Oktalyzer Tracker Music Module | . | M | 2.14.00 | 910 |
| OLB | MS OLE Object Library | . | L | 2.00.00 | 911 |
| OLB | MS Windows OLE Type Library | . | M | 2.11.00 | 100 |
| OLB | PSpice Capture Design/Library/Symbols | Y | H | 2.17.00 | 331 |
| OLD | Backup File (Unknown Source) | . | L | 1.05.00 | 506 |
| OMA | Sony OpenMG Music Format | . | M | 2.15.00 | 2383 |
| ONE | OneNote Note File | . | M | 2.15.00 | 2376 |
| ONE | Semone Archive | . | M | 2.15.00 | 473 |
| OOP | OOP Compressed Archive | . | M | 2.08.00 | 1620 |
| OPA | Kodak Photo CD overview pack | . | M | 2.22.00 | 3053 |
| OPF | Obsidium Project File | . | M | 2.11.00 | 1976 |
| OPF | Open eBook Forum Publication | . | H | 2.21.00 | 2924 |
| OPJ | OrCAD Capture Project | . | M | 1.03.00 | 332 |
| OPO | Symbian Organiser Executable | . | M | 2.21.00 | 913 |
| OPS | MS Office Profile Settings | . | M | 2.07.00 | 1408 |
| OPT | MS Developer Studio Workspace Options | Y | H | 2.17.00 | 914 |
| OPX | OrgPlus Organization Chart | . | M | 2.17.00 | 915 |
| OPX | Symbian Library | . | M | 2.21.00 | 3035 |
| OR2 | Lotus Organizer File | . | M | 2.19.00 | 916 |
| OR3 | Lotus Organizer File | . | M | 2.19.00 | 916 |
| ORA | Oracle 7 Configuration File | . | M | 2.03.06 | 917 |
| ORC | Oracle 7 Script | . | L | 2.00.00 | 918 |
| ORG | America Online Personal File Cabinet | . | M | 2.16.00 | 1335 |
| ORG | CMS Organ Data | . | M | 1.00.00 | 29 |
| ORG | Label Factory Deluxe Template | . | M | 2.14.00 | 2228 |
| ORG | Lotus Organizer File | . | M | 2.19.00 | 916 |
| OSD | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| OSD | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| OSS | MS Office Saved Search | . | L | 2.00.00 | 919 |
| OST | MS Exchange/Outlook Offline Storage | . | M | 2.12.00 | 920 |
| OT? | OpenDocument Office Document | Y | H | 2.21.00 | 1499 |
| OTC | OpenDocument Chart Template | Y | H | 2.21.00 | 2489 |
| OTF | OpenDocument Formula Template | Y | H | 2.21.00 | 2491 |
| OTF | OpenType Compact Font Format | . | M | 2.11.00 | 1303 |
| OTG | OpenDocument Graphics Template | Y | H | 2.21.00 | 2493 |
| OTH | OpenDocument Text Web | Y | H | 2.21.00 | 2503 |
| OTI | OpenDocument Image Template | Y | H | 2.21.00 | 2495 |
| OTL | Fookes Super NoteTab Template | . | L | 2.00.00 | 921 |
| OTM | OpenDocument Text Master | Y | H | 2.21.00 | 2501 |
| OTP | OpenDocument Presentation Template | Y | H | 2.21.00 | 2497 |
| OTS | OpenDocument Spreadsheet Template | Y | H | 2.21.00 | 2499 |
| OTT | OpenDocument Text Template | Y | H | 2.21.00 | 2502 |
| OVL | DOS Program | Y | M | 1.00.00 | 15 |
| OVL | Program Overlay | . | M | 1.00.00 | 27 |
| OVn | Program Overlay | . | M | 1.00.00 | 27 |
| OVR | Program Overlay | . | M | 1.00.00 | 27 |
| P | MS Network Driver Protocol Support | . | M | 2.07.00 | 1472 |
| P10 | PKCS Certificate / Digital ID | . | L | 2.00.00 | 924 |
| P10 | Tektronix Plot 10 Drawing | . | L | 2.00.00 | 922 |
| P12 | PKCS Certificate / Digital ID | . | L | 2.00.00 | 924 |
| P65 | PageMaker 6.5 Document | Y | H | 2.17.00 | 2196 |
| P65 | PageMaker 6.5 Publication (MacBinary) | . | M | 2.09.00 | 923 |
| P7 | XV Visual Schnauzer Thumbnail Image | . | M | 2.08.00 | 1667 |
| P7B | PKCS Certificate / Digital ID | . | L | 2.00.00 | 924 |
| P7C | PKCS Certificate / Digital ID | . | L | 2.00.00 | 924 |
| P7M | PKCS #7 Secure MIME Message | . | M | 2.22.01 | 1810 |
| PAB | MS Personal Address Book | . | M | 2.13.00 | 335 |
| PAC | CrossePAC Compressed Archive | . | M | 2.06.00 | 1362 |
| PAC | Lossless Predictive Audio Compression | . | M | 2.08.00 | 1363 |
| PAC | Sound Blaster Studio II Package Song | . | M | 2.06.00 | 925 |
| PAC | STAD Graphic Image | . | M | 2.06.00 | 1364 |
| PAF | Ensoniq PARIS Audio Format | . | M | 2.08.00 | 1700 |
| PAINT | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| PAINT | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| PAK | Absolute Terror Game Archive | . | M | 2.15.00 | 524 |
| PAK | Id Software Internal Data (Quake) | . | M | 1.05.00 | 430 |
| PAK | Massive Development Package Archive | . | M | 2.07.00 | 1501 |
| PAK | PK Pak Archive | . | M | 1.00.00 | 20 |
| PAL | Dr. Halo Palette | . | M | 2.11.00 | 66 |
| PAL | Harvard Graphics Palette | . | M | 1.00.00 | 94 |
| PAL | HSI Palette | . | M | 1.00.00 | 192 |
| PAL | MS Draw Palette | . | M | 1.00.00 | 220 |
| PAL | MS Windows Color Palette (Intel) | . | M | 1.00.00 | 320 |
| PAL | MS Windows Color Palette (Motorola) | . | H | 2.17.00 | 2263 |
| PAM | Portable Arbitrary Map Image (Binary) | . | M | 2.14.00 | 2276 |
| PAn | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PAQ8JC | PAQ8JC Compressed Archive | . | M | 2.15.00 | 2373 |
| PAR | Parity Archive Volume Set Specification 1 | . | M | 2.16.00 | 2406 |
| PAR2 | Parity Archive Volume Set Specification 2 | . | M | 2.11.00 | 1980 |
| PAS | Borland Delphi Source Code | . | M | 2.18.02 | 2726 |
| PAS | Source Code (General) | . | M | 2.23.00 | 1256 |
| PAT | Adobe PhotoShop Pattern | . | M | 2.06.00 | 1365 |
| PAT | Corel Draw Raster (Intel) | Y | H | 2.15.03 | 241 |
| PAT | Corel Draw Raster (Motorola) | Y | H | 2.17.00 | 2597 |
| PAT | Corel Draw Vector Pattern | . | L | 2.00.00 | 926 |
| PAT | Corel Metafile Exchange Image (Intel) | . | H | 2.07.00 | 631 |
| PAT | Corel Metafile Exchange Img (Motorola) | . | H | 2.17.00 | 2279 |
| PAT | File Investigator Data | . | M | 1.00.00 | 149 |
| PAT | GIMP Pattern Data | . | M | 2.10.00 | 1857 |
| PAT | Gravis Ultrasound Patch | . | M | 1.00.00 | 202 |
| PAT | MultiMate Document | . | H | 2.19.00 | 122 |
| PAT | PCStitch Pattern | . | M | 2.10.00 | 1858 |
| PBD | PowerBuilder Dynamic Library | . | M | 2.03.06 | 927 |
| PBD | PowerBuilder Dynamic Library (MacBinary) | . | M | 2.16.00 | 2504 |
| PBK | MS Internet Explorer Connection Wizard | . | M | 2.03.06 | 419 |
| PBK | MS Phonebook | . | L | 2.00.00 | 929 |
| PBL | PowerBuilder Library | . | M | 2.17.00 | 930 |
| PBM | Portable BitMap Image (ASCII) | . | M | 1.00.00 | 273 |
| PBM | Portable BitMap Image (Binary) | . | M | 1.00.00 | 186 |
| PBM | Portable GreyMap Image (ASCII) | . | M | 1.00.00 | 275 |
| PBM | Portable GreyMap Image (Binary) | . | M | 1.00.00 | 187 |
| PBM | Portable PixMap Image (ASCII) | . | M | 1.00.00 | 281 |
| PBM | Portable PixMap Image (Binary) | . | M | 1.00.00 | 188 |
| PBn | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PBOOK | QuickLink Mobile Phonebook | . | H | 2.15.00 | 867 |
| PBP | Phoenix Visual Designer Project | . | M | 2.11.00 | 1981 |
| PBR | PowerBASIC Resource | . | M | 2.11.00 | 931 |
| PBU | PowerBASIC Compiled Unit | . | M | 2.11.00 | 1982 |
| PCB | ACCEL / Protel Printed Circuit Board | . | M | 2.13.00 | 2168 |
| PCC | MS Visual C++ Precompiled Header Cache | . | M | 2.06.00 | 1336 |
| PCC | Paintbrush Multi-Page Fax Bitmap | Y | M | 2.19.00 | 319 |
| PCC | PC Paintbrush Bitmap | Y | H | 2.15.00 | 11 |
| PCD | Kodak Photo CD Image | . | H | 2.16.00 | 932 |
| PCD | MS Plotter Control Definition | . | M | 2.12.00 | 2147 |
| PCF | MS PipeLine Component File | Y | H | 2.17.00 | 1464 |
| PCF | X-Windows Portable Compiled Font | . | M | 2.13.02 | 2211 |
| PCH | MS Visual C v1 Precompiled Header | . | M | 2.23.00 | 3262 |
| PCH | MS Visual C++ Precompiled Header | . | M | 1.05.00 | 371 |
| PCH++ | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| PCL | HP Printer Control Language File | . | M | 2.06.00 | 193 |
| PCL | HP Printer Control Language Image(PJL) | Y | H | 2.06.03 | 836 |
| PCM | OKI MSM6376 Synthesizer Chip PCM File | . | M | 2.03.06 | 934 |
| PCR | PCR Graphic Image | . | M | 1.00.00 | 90 |
| PCS | MS Pictures | Y | H | 2.17.00 | 329 |
| PCS | Pfaff Home Embroidery Format | . | M | 2.11.00 | 2022 |
| PCS | PICS Animation File | . | L | 2.00.00 | 936 |
| PCT | Mac PICT Image (MacBinary) | Y | M | 2.03.18 | 293 |
| PCT | Macintosh QuickDraw/PICT Image | Y | H | 1.03.00 | 172 |
| PCU | XProfan Compiled Unit | . | M | 2.11.00 | 1984 |
| PCX | Paintbrush Multi-Page Fax Bitmap | Y | M | 2.19.00 | 319 |
| PCX | PC Paintbrush Bitmap | Y | H | 2.15.00 | 11 |
| PDB | Aportis Document | . | M | 2.23.00 | 2609 |
| PDB | BGBlitz Position Database | . | M | 2.09.00 | 833 |
| PDB | Bitstream FaceLift for Word Perfect Da | . | M | 2.14.00 | 2222 |
| PDB | MS Visual C++ Program Database | . | M | 2.09.00 | 423 |
| PDB | Palm OS Application Data (MacBinary) | . | M | 2.09.00 | 1799 |
| PDB | Palm OS Database (MacBinary) | . | M | 2.09.00 | 1798 |
| PDB | Palm OS Database/Document | . | M | 2.07.00 | 1337 |
| PDB | Plucker Document | . | M | 2.23.00 | 2453 |
| PDB | PowerBASIC Debugger Symbols | . | M | 2.11.00 | 908 |
| PDD | Adobe Language Database | . | M | 2.13.00 | 433 |
| PDD | Adobe PhotoShop Image | Y | M | 2.14.00 | 400 |
| PDD | Adobe PhotoShop Image (MacBinary) | . | M | 2.16.00 | 1739 |
| PDF | Adobe Portable Document (MacBinary) | Y | H | 2.20.02 | 1331 |
| PDF | Adobe Portable Document Format | Y | H | 2.20.02 | 258 |
| PDF | MS Package Definition File | . | M | 2.04.00 | 937 |
| PDF | Novell Print Definition File | . | M | 1.00.00 | 86 |
| PDN | Paint.NET Image | . | M | 2.22.00 | 1985 |
| PDS | NASA Planetary Data Systems Image | . | M | 2.17.00 | 938 |
| PEG | Red Faction II Game Data | . | M | 2.11.00 | 1986 |
| PER | MS DirectMusic Support File | . | M | 2.13.00 | 1220 |
| PES | Brother/Babylock/Bernina Embroidery | . | M | 2.11.00 | 2023 |
| PEX | RealLegal Binder Document | . | H | 2.09.00 | 1802 |
| PF | Aladdin Systems Private File | . | L | 2.00.00 | 939 |
| PF | MS Image Color Matching Profile | . | M | 2.22.00 | 337 |
| PF | MS Windows Prefetch Cache | . | M | 2.03.06 | 18 |
| PF | QuickArt Document | . | L | 2.00.00 | 988 |
| PF | WordPerfect Office Color Correction | . | M | 2.06.00 | 1276 |
| PFA | Adobe PostScript Font (Binary) | . | M | 2.14.00 | 340 |
| PFB | Adobe PostScript Font (Binary) | . | M | 2.14.00 | 340 |
| PFB | Adobe PostScript Font (MacBinary) | . | M | 2.09.00 | 705 |
| PFC | Aladdin Systems File Component | . | L | 2.00.00 | 940 |
| PFC | America Online Personal File Cabinet | . | M | 2.16.00 | 1335 |
| PFM | Adobe Printer Font Metrics | . | M | 2.18.00 | 358 |
| PFT | PFT Archive | . | M | 2.22.00 | 3076 |
| PGB | Harlequin RIP Image | . | M | 2.16.00 | 515 |
| PGD | Pretty Good Privacy Virtual Disk Image | . | M | 2.09.00 | 1730 |
| PGF | PGC Portfolio Graphics Comp. Bitmap | . | M | 2.08.00 | 1668 |
| PGF | Progressive Graphics Image | . | M | 2.08.00 | 1669 |
| PGL | HP Plotter Language Drawing | . | M | 2.23.00 | 941 |
| PGM | Portable GreyMap Image (ASCII) | . | M | 1.00.00 | 275 |
| PGM | Portable GreyMap Image (Binary) | . | M | 1.00.00 | 187 |
| PGM | RS7000 OS Image | . | M | 2.11.00 | 1987 |
| PGN | Portable Game Notation | . | M | 2.11.00 | 1988 |
| PGP | Pretty Good Privacy Key/Signature/Data | . | M | 2.16.00 | 942 |
| PGTB | Program Traceback | Y | H | 2.18.01 | 2635 |
| PH | MS Help Compiler Phrase Table | . | L | 2.00.00 | 943 |
| PH3 | Personal Home Page Script | . | M | 2.15.01 | 2403 |
| PH4 | Personal Home Page Script | . | M | 2.15.01 | 2403 |
| PHD | PolyHedral Database | . | M | 2.17.00 | 2560 |
| PHP | Personal Home Page Script | . | M | 2.15.01 | 2403 |
| PHP3 | Personal Home Page Script | . | M | 2.15.01 | 2403 |
| PHP4 | Personal Home Page Script | . | M | 2.15.01 | 2403 |
| PHTML | Perl-Parsed HTML | . | L | 2.00.00 | 944 |
| PI2 | Portrait Innovations Image | . | M | 2.14.00 | 2245 |
| PIC | AutoDesk Animator Cel Image | . | M | 2.14.00 | 2274 |
| PIC | Dr. Halo Picture | . | M | 1.00.00 | 67 |
| PIC | IBM Storyboard Image | . | M | 2.08.00 | 1678 |
| PIC | Lotus Picture | . | M | 2.12.00 | 2143 |
| PIC | Mac PICT Image (MacBinary) | Y | M | 2.03.18 | 293 |
| PIC | Macintosh QuickDraw/PICT Image | Y | H | 1.03.00 | 172 |
| PIC | Micrografx Picture | . | M | 1.00.00 | 63 |
| PIC | PC Paint/Pictor Page Image | Y | M | 1.05.00 | 10 |
| PIC | PIC Graphic Image | . | M | 1.00.00 | 159 |
| PIC | Pixar Picture | . | L | 2.00.00 | 945 |
| PIC | Psion Series 3 Bitmap | . | M | 2.08.00 | 1003 |
| PIC | SoftImage 3D Image | . | M | 2.08.00 | 1677 |
| PICIO | Pixar Picture | . | L | 2.00.00 | 945 |
| PICT | Macintosh QuickDraw/PICT Image | Y | H | 1.03.00 | 172 |
| PICT2 | Macintosh QuickDraw/PICT Image | Y | H | 1.03.00 | 172 |
| PICTOR | PC Paint/Pictor Page Image | Y | M | 1.05.00 | 10 |
| PIDF | Presence Information Data Format | Y | H | 2.16.00 | 2452 |
| PIF | MS Windows Program Information | Y | H | 1.05.00 | 116 |
| PIG | Descent Texture Set | . | M | 2.15.00 | 1366 |
| PIL | piAccess Mail / Link | . | M | 2.16.00 | 946 |
| PIM | PIM Compressed Archive | . | M | 2.19.02 | 2822 |
| PIN | Oracle 7 Configuration File | . | M | 2.03.06 | 917 |
| PINS | PINs encrypted data | . | M | 2.16.00 | 947 |
| PIP | MS Application Profile Settings | . | M | 2.13.00 | 1179 |
| PIX | PABX Background Bitmap | . | M | 2.08.00 | 949 |
| PIX | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| PIXAR | Pixar Picture | . | L | 2.00.00 | 945 |
| PIXELPAINT | PixelPaint Professional Image | . | L | 2.00.00 | 950 |
| PJ | HP Printer Control Language File | . | M | 2.06.00 | 193 |
| PJ | HP Printer Control Language Image(PJL) | Y | H | 2.06.03 | 836 |
| PJL | Printer Job Language Image | Y | H | 2.06.03 | 408 |
| PJT | CaseMaker AcuBench Project | . | M | 2.15.00 | 2353 |
| PJT | MS FoxPro Report File | . | M | 2.00.00 | 741 |
| PJT | MS Visual Foxpro Project | . | L | 2.00.00 | 952 |
| PJX | MS Visual Foxpro Project | . | L | 2.00.00 | 952 |
| PJXL | HP Printer Control Language File | . | M | 2.06.00 | 193 |
| PJXL | HP Printer Control Language Image(PJL) | Y | H | 2.06.03 | 836 |
| PK4 | Railroad Tycoon Packaged Graphics | . | M | 2.08.00 | 1571 |
| PKF | Sierra Game Data File | . | M | 2.00.00 | 381 |
| PKG | AudioGraph Video (MacBinary) | . | M | 2.16.00 | 2460 |
| PKG | Mac OS X Installer (MacBinary) | . | M | 2.16.00 | 2459 |
| PKG | MS Setup Package | . | M | 2.03.06 | 953 |
| PKG | MS Windows Cabinet Archive | . | M | 2.07.00 | 99 |
| PKG | MS Windows Cabinet Archive (MacBinary) | . | M | 2.16.00 | 2487 |
| PKP | MS Visual Studio Package Project | . | M | 2.07.00 | 1468 |
| PKR | GNOME Keyring | . | M | 2.23.00 | 3239 |
| PKR | Pretty Good Privacy Public Keyring | . | M | 2.16.00 | 1452 |
| PL | Perl Application | . | M | 2.16.00 | 955 |
| PL | Python Tkinter / UNIX Shell Script | . | M | 2.16.00 | 987 |
| PL0 | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PL1 | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PL2 | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PLG | MS Visual C Build Log | . | M | 2.00.00 | 1206 |
| PLI | Oracle 7 Data Description | . | L | 2.00.00 | 956 |
| PLJ | EverAD PlayJ Sound | . | M | 2.16.00 | 502 |
| PLL | PAKLEO Compressed Archive | . | M | 2.08.00 | 1627 |
| PLM | DisorderTracker 2 Module | . | M | 2.06.00 | 957 |
| PLn | 3D Home Architect Delux Floor Plans | . | M | 2.14.00 | 2227 |
| PLOT | UNIX Plot(5) File | . | L | 2.00.00 | 958 |
| PLR | Descent Player | . | M | 2.17.00 | 530 |
| PLS | WinAmp MPEG Play List | . | M | 2.11.00 | 959 |
| PLT | Adobe PostScript Document (PJL) | Y | H | 2.06.03 | 410 |
| PLT | AutoCAD Plot Drawing | . | M | 2.15.00 | 960 |
| PLT | HP Graphics Language Drawing | . | M | 2.07.00 | 778 |
| PLT | HP Graphics Language Drawing (PJL) | Y | H | 2.06.03 | 841 |
| PLT | Lotus Organiser Paper Layout Definition | . | M | 2.19.00 | 954 |
| PLT | OziExplorer Plot Track | . | M | 2.11.00 | 1989 |
| PLY | Polygon Model Format | . | M | 2.11.00 | 961 |
| PM | Composite Attachment File | . | M | 2.16.01 | 2509 |
| PM | Power Music Song/Module | . | M | 2.11.00 | 1990 |
| PM | X11 Pixmap Image | . | M | 2.22.00 | 1166 |
| PM3 | PageMaker 3.0 Document | . | M | 1.00.00 | 131 |
| PM3 | PageMaker 3.0 Document (MacBinary) | . | M | 2.09.00 | 555 |
| PM4 | PageMaker 4.0 Document | . | M | 2.09.00 | 962 |
| PM4 | PageMaker 4.0 Document (MacBinary) | . | M | 2.09.00 | 1809 |
| PM5 | PageMaker 5.0 Document (MacBinary) | . | M | 2.09.00 | 963 |
| PM6 | PageMaker 6.0 Document (MacBinary) | . | M | 2.09.00 | 964 |
| PMA | PMarc Archive | . | M | 2.22.00 | 3115 |
| PMBC | Image Professional Compressed Bitmap | Y | H | 2.18.00 | 2636 |
| PMC | MS Windows Performance Monitor Chart | . | M | 2.13.00 | 2156 |
| PMD | Polyphonic Phone Ringtone | . | M | 2.19.00 | 2771 |
| PMJ | Label Factory Deluxe Job | . | M | 2.14.00 | 2226 |
| PMS | AliceSoft PMS Bitmap Image | . | M | 2.08.00 | 1670 |
| PMZ | PPMZ Archive | . | M | 2.22.00 | 3065 |
| PMZ | PPMZ2 Archive | . | M | 2.14.00 | 2305 |
| PNF | Precompiled Setup Information | . | M | 2.17.02 | 346 |
| PNG | Portable Network Graphics Bitmap | Y | H | 2.23.00 | 965 |
| PNM | Portable BitMap Image (ASCII) | . | M | 1.00.00 | 273 |
| PNM | Portable BitMap Image (Binary) | . | M | 1.00.00 | 186 |
| PNM | Portable GreyMap Image (ASCII) | . | M | 1.00.00 | 275 |
| PNM | Portable GreyMap Image (Binary) | . | M | 1.00.00 | 187 |
| PNM | Portable PixMap Image (ASCII) | . | M | 1.00.00 | 281 |
| PNM | Portable PixMap Image (Binary) | . | M | 1.00.00 | 188 |
| Pnn | PC64 Native File | . | M | 2.08.00 | 1599 |
| PNT | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| PNT | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| PNTG | MacPaint Bitmap | . | M | 2.18.00 | 966 |
| PNTG | MacPaint Bitmap (MacBinary) | Y | M | 2.03.18 | 284 |
| POC | MS Publisher Wizard Template | . | M | 2.06.00 | 1304 |
| POD | Blair Witch Project | . | M | 2.15.00 | 485 |
| POD | Standard Archive Format | . | M | 2.22.00 | 3041 |
| POF | Descent Robots | . | M | 2.17.00 | 531 |
| POG | Descent Alternative Texture Set | . | M | 2.06.00 | 967 |
| POL | 3D Polygon Models Format | . | M | 2.11.00 | 1991 |
| POL | MS Software Policies | . | M | 2.19.00 | 1189 |
| POLICY | MS Windows Policy | . | H | 2.15.00 | 299 |
| POLY | Polygon 3D Objects | . | M | 2.17.00 | 2561 |
| POS | WinHex Position Data | . | M | 2.11.00 | 1993 |
| POT | MS PowerPoint Slides (MacBinary) | . | M | 2.09.00 | 1758 |
| POT | MS PowerPoint Slides/Add-on (OLE) | Y | H | 2.17.00 | 164 |
| POTX | MS PowerPoint Presentation (Open XML) | Y | H | 2.21.00 | 2210 |
| POV | Persistence of Vision Ray-Tracer | . | M | 2.22.00 | 968 |
| PP | Powerpacker Archive | . | M | 2.22.00 | 2306 |
| PP4 | Picture Publisher Bitmap | . | L | 2.00.00 | 969 |
| PP5 | Picture Publisher Bitmap | . | L | 2.00.00 | 969 |
| PPA | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PPA | MS PowerPoint Slides (MacBinary) | . | M | 2.09.00 | 1758 |
| PPA | MS PowerPoint Slides/Add-on (OLE) | Y | H | 2.17.00 | 164 |
| PPC | Fat Binary | . | M | 2.19.00 | 2732 |
| PPC | QuickTime Xtra Plug-in | . | M | 2.05.00 | 1266 |
| PPD | PostScript Printer Description | . | M | 2.14.00 | 2224 |
| PPF | PlayStation Patch File | . | M | 2.11.00 | 970 |
| PPK | America Online Data | . | M | 2.06.00 | 1290 |
| PPK | RSA Crypto Key | . | M | 2.15.00 | 2395 |
| PPL | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PPM | Portable PixMap Image (ASCII) | . | M | 1.00.00 | 281 |
| PPM | Portable PixMap Image (Binary) | . | M | 1.00.00 | 188 |
| PPMD | PPMD Archive | . | M | 2.22.00 | 3077 |
| PPO | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PPP | Picture Pump Project File | . | M | 2.11.00 | 971 |
| PPS | MS PowerPoint Slides (MacBinary) | . | M | 2.09.00 | 1758 |
| PPS | MS PowerPoint Slides (XML) | Y | H | 2.09.00 | 718 |
| PPS | MS PowerPoint Slides/Add-on (OLE) | Y | H | 2.17.00 | 164 |
| PPSX | MS PowerPoint Presentation (Open XML) | Y | H | 2.21.00 | 2210 |
| PPT | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PPT | MS Compound Document (OLE) | Y | H | 2.17.00 | 274 |
| PPT | MS PowerPoint Slides (MacBinary) | . | M | 2.09.00 | 1758 |
| PPT | MS PowerPoint Slides (XML) | Y | H | 2.09.00 | 718 |
| PPT | MS PowerPoint Slides/Add-on (OLE) | Y | H | 2.17.00 | 164 |
| PPTM | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| PPTM | MS PowerPoint Presentation (Open XML) | Y | H | 2.21.00 | 2210 |
| PPTX | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| PPTX | MS PowerPoint Presentation (Open XML) | Y | H | 2.21.00 | 2210 |
| PPU | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PPW | Free Pascal Unit | . | M | 2.14.00 | 2332 |
| PR | Sun Icon/Cursor Image | . | M | 2.22.00 | 790 |
| PRC | Palm OS Dynamic Library | . | M | 2.23.00 | 3295 |
| PRC | Palm OS Patch | . | M | 2.23.00 | 3296 |
| PRC | Palm OS Resource File | . | M | 2.23.00 | 972 |
| PRD | MS Word for DOS Printer Definition | . | M | 1.00.00 | 118 |
| PRD | MS Word Printer Definition (MacBinary) | . | M | 2.09.00 | 1763 |
| PRE | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| PRE | Lotus Freelance Presentation | . | M | 2.19.00 | 973 |
| PRE | Nero Wave Editor Preset | . | M | 2.18.00 | 603 |
| PREMINET | Preminet File | . | M | 2.16.00 | 2505 |
| PRF | ExamView Performance File | . | M | 2.14.00 | 2220 |
| PRF | MS Profiler Output | . | M | 2.18.00 | 622 |
| PRF | Polychrome Recursive Format Bitmap | . | M | 2.13.00 | 2201 |
| PRF | Sierra Game Data File | . | M | 2.00.00 | 381 |
| PRG | Atari ST MiNT Program | . | M | 2.14.00 | 2266 |
| PRG | Atari ST TOS Program | . | M | 2.11.00 | 1994 |
| PRG | dBase III+ Program File | . | M | 1.00.00 | 61 |
| PRG | MS FoxPro Program File | . | L | 1.05.00 | 553 |
| PRI | RxWord Capture Form | . | M | 2.12.00 | 2144 |
| PRJ | FireFly SDK Designer Project | . | M | 2.11.00 | 1995 |
| PRJ | Object Oriented Graphics Library: 4x4 Transformations (Binary) | . | M | 2.17.00 | 2559 |
| PRJ | Object Oriented Graphics Library: Multiple 4x4 Transformations | . | M | 2.17.00 | 2558 |
| PRJ | Turbo C Project File | . | M | 1.00.00 | 303 |
| PRN | Canon BJ Escape Codes/Output | . | M | 1.00.00 | 277 |
| PRN | Diablo 630 Escape Codes/Output | . | M | 2.15.02 | 2404 |
| PRN | HP Printer Control Language File | . | M | 2.06.00 | 193 |
| PRN | HP Printer Control Language Image(PJL) | Y | H | 2.06.03 | 836 |
| PRN | Printer Escape Codes/Output | . | M | 1.00.00 | 223 |
| PRN | Printer Job Language Image | Y | H | 2.06.03 | 408 |
| PROJ | BeOS Compiler Project | . | M | 2.06.00 | 1353 |
| PROJDATA | MS Visual Studio.NET C# Project Data | . | M | 2.12.00 | 1807 |
| PRS | Harvard Graphics Presentation | . | M | 2.19.00 | 974 |
| PRS | WordPerfect Printer Resource | Y | M | 2.22.00 | 2250 |
| PRSP | Deluxe Paint Perspective Move | Y | H | 2.18.00 | 2637 |
| PRV | PsiMail Internet Provider Template | . | L | 2.00.00 | 975 |
| PRZ | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| PS | Adobe PostScript Document | Y | H | 2.19.02 | 301 |
| PS | Adobe PostScript Document (PJL) | Y | H | 2.06.03 | 410 |
| PS16 | Protracker Studio 16 Format | . | M | 2.11.00 | 1996 |
| PSA | Pretty Simple Archive | . | M | 2.14.00 | 2307 |
| PSB | Pinnacle Sound Bank | . | L | 2.00.00 | 977 |
| PSD | Adobe PhotoShop Image | Y | M | 2.14.00 | 400 |
| PSD | Adobe PhotoShop Image (MacBinary) | . | M | 2.16.00 | 1739 |
| PSESS | MS Visual Studio.NET Perform. Session | . | M | 2.09.00 | 876 |
| PSF | CaseMaker AcuBench Program Structure | . | M | 2.15.00 | 2352 |
| PSF | PhotoStudio Image | . | M | 2.07.00 | 1390 |
| PSF | Playstation Sound Format | . | M | 2.07.00 | 1391 |
| PSI | Symbian/Psion A-Law Voice Note Audio | . | M | 2.21.00 | 978 |
| PSID | Commodore 64 PlaySID Music | . | M | 2.08.00 | 1593 |
| PSM | Protracker Studio Module | . | M | 2.11.00 | 979 |
| PSM | Turbo Pascal Symbol Table | . | M | 2.11.00 | 1998 |
| PSP | Paint Shop Pro Deformation Map | . | M | 2.06.00 | 1306 |
| PSP | Paint Shop Pro Gradient | . | M | 2.10.00 | 1307 |
| PSP | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSP | Paint Shop Pro Line Style | . | M | 2.07.00 | 1378 |
| PSP | Paint Shop Pro Script | . | M | 2.23.00 | 1355 |
| PSP | Paint Shop Pro Support File | . | M | 2.07.00 | 1393 |
| PSP | PhotoDeluxe Support File | . | M | 2.07.00 | 1392 |
| PSPBRUSH | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSPCACHE | Paint Shop Pro Support File | . | M | 2.07.00 | 1393 |
| PSPDEFORMATION | Paint Shop Pro Deformation Map | . | M | 2.06.00 | 1306 |
| PSPFRAME | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSPGRADIENT | Paint Shop Pro Gradient | . | M | 2.10.00 | 1307 |
| PSPIMAGE | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSPSCRIPT | Paint Shop Pro Script | . | M | 2.23.00 | 1355 |
| PSPSELECTION | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSPSHAPE | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PSPSTYLEDLINE | Paint Shop Pro Line Style | . | M | 2.07.00 | 1378 |
| PSPTUBE | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| PST | MS Outlook Personal Information Store (2003 - 2007) | . | M | 2.18.01 | 2724 |
| PST | MS Outlook Personal Information Store (97 - 2002) | . | M | 2.18.01 | 336 |
| PST | Photo Express Pattern/Gallery | . | M | 2.11.00 | 1339 |
| PST | PhotoImpact Presets/Clipart Images | . | M | 2.11.00 | 395 |
| PSW | InkWriter/Note Taker/Pocket Word Document | . | M | 2.11.00 | 2001 |
| PSY | PSYCLE Tune/Song | . | M | 2.11.00 | 1999 |
| PT | Kodak Precision Color Management System | . | M | 2.07.00 | 1394 |
| PT3 | PageMaker 3.0 File | . | M | 1.00.00 | 132 |
| PTM | Polynomial Texture Map | . | M | 2.11.00 | 1992 |
| PTM | PolyTracker Music Module | . | M | 2.11.00 | 980 |
| PTN | PaperPort Thumbnail Images | . | M | 2.07.00 | 434 |
| PTR | Pro/ENGINEER Geographic Image | . | M | 2.05.00 | 1260 |
| PTX | Printronix Graphics File | . | L | 2.00.00 | 981 |
| PUB | MS Publisher Document | . | H | 2.17.00 | 1356 |
| PUB | PFS: 1st Publisher Document | . | M | 1.00.00 | 130 |
| PUB | RSA Crypto Key | . | M | 2.15.00 | 2395 |
| PUT | PUT Compressed Archive | . | M | 2.08.00 | 800 |
| PUZZ | X11 Puzzle File | . | L | 2.00.00 | 982 |
| PVK | MS Private Key | . | M | 2.11.00 | 2000 |
| PW | Pathetic Writer Document | . | M | 2.19.00 | 2776 |
| PW | Professional Write Document | . | M | 2.19.00 | 161 |
| PWD | MS Pocket Word Document | . | M | 2.11.00 | 983 |
| PWI | InkWriter/Note Taker/Pocket Word Document | . | M | 2.11.00 | 2001 |
| PWL | MS Windows 95 Password List File | . | M | 1.05.00 | 304 |
| PWL | MS Windows Password List | . | M | 2.10.00 | 93 |
| PWN | Post-it-Notes (MacBinary) | . | M | 2.16.00 | 2456 |
| PWP | Smith Corona Word Processor Document | . | M | 2.19.00 | 984 |
| PWZ | MS PowerPoint Wizard | Y | H | 2.17.00 | 985 |
| PX | Borland Paradox Primary Index | . | M | 2.21.00 | 556 |
| PXL | MS Pocket Excel Spreadsheet | . | M | 2.11.00 | 986 |
| PXR | Pixar Picture | . | L | 2.00.00 | 945 |
| PY | Python Tkinter / UNIX Shell Script | . | M | 2.16.00 | 987 |
| PYC | Python Tkinter / UNIX Shell Script | . | M | 2.16.00 | 987 |
| PYC | Python Tkinter Library | . | M | 2.10.00 | 1956 |
| PZL | Lode Runner Puzzle Set | . | M | 1.00.00 | 227 |
| Q3O | Quick3D Model Object | . | M | 2.07.00 | 1502 |
| Q3S | Quick3D Model Scene | . | M | 2.07.00 | 1503 |
| QAD | QuickArt Document | . | L | 2.00.00 | 988 |
| QBW | QuickBooks for Windows Backup | . | M | 2.19.00 | 989 |
| QBW | QuickBooks for Windows Backup (Encrypted) | . | M | 2.23.00 | 3304 |
| QBX | QuickBooks for Windows Accountant's Backup | Y | H | 2.23.00 | 3308 |
| QCA | Phone Doubler | . | M | 2.16.00 | 2464 |
| QCALL | Phone Doubler | . | M | 2.16.00 | 2464 |
| QCF | QuickBooks for Windows Copy File | . | M | 2.23.00 | 3307 |
| QCP | PhotoImpact Data | . | M | 2.07.00 | 390 |
| QCP | PureVoice Audio | Y | M | 2.09.00 | 1090 |
| QDAT | QuickTime Data | . | M | 2.10.00 | 1297 |
| QDF | Quicken Data File | . | M | 2.11.00 | 1308 |
| QEL | Quicken Electronic Library | . | M | 2.07.00 | 1309 |
| QFC | QuickFileCollection Archive | . | M | 2.22.00 | 1628 |
| QFI | Quicken Electronic Library | . | M | 2.07.00 | 1309 |
| QFL | Family Lawyer Document | . | L | 2.00.00 | 991 |
| QFX | Open Financial Exchange File | . | M | 2.14.00 | 2326 |
| QFX | QuikLink 2 Fax Document | Y | M | 1.00.00 | 183 |
| QIC | MS Quarter-Inch Cartridge Backup Set | . | M | 2.11.00 | 992 |
| QIF | Quicken Interchange Format | . | M | 2.17.00 | 993 |
| QIF | QuickTime Image | . | M | 2.16.00 | 997 |
| QM | Google Earth Language Definition | . | M | 2.18.00 | 994 |
| QPH | Quicken Price History | . | M | 2.07.00 | 1443 |
| QPW | Quatro Pro File | Y | H | 2.17.00 | 155 |
| QRS | WordPerfect Equation Resource | Y | M | 2.22.00 | 2257 |
| QRT | Quick Ray Trace | . | M | 2.12.00 | 990 |
| QRY | MS Query | . | L | 2.00.00 | 995 |
| QSD | Quicken Data File | . | M | 2.11.00 | 1308 |
| QST | Quake Spy Tab File | . | L | 2.00.00 | 996 |
| QT | QuickTime Movie | Y | M | 2.23.00 | 236 |
| QT | QuickTime Movie (MacBinary) | . | M | 2.09.00 | 1748 |
| QTCH | Apple QuickTime Cache | . | M | 2.23.00 | 2825 |
| QTI | QuickTime Image | . | M | 2.16.00 | 997 |
| QTIF | QuickTime Image | . | M | 2.16.00 | 997 |
| QTM | QuickTime Movie | Y | M | 2.23.00 | 236 |
| QTM | QuickTime Movie (MacBinary) | . | M | 2.09.00 | 1748 |
| QTP | QuickTime Preferences File | . | M | 2.06.00 | 998 |
| QTR | QuickTime Data | . | M | 2.10.00 | 1297 |
| QTS | Macintosh QuickDraw/PICT Image | Y | H | 1.03.00 | 172 |
| QTS | QuickTime Image | . | M | 2.16.00 | 997 |
| QTX | QuickTime Image | . | M | 2.16.00 | 997 |
| QTZ | Quartz Composer Data | . | M | 2.19.02 | 2826 |
| QUAD | Object Oriented Graphics Library: Quadrilaterals (ASCII) | . | M | 2.17.00 | 906 |
| QUAD | Object Oriented Graphics Library: Quadrilaterals (Binary) | . | M | 2.17.00 | 2547 |
| QUERY | MS PC Health Help Center Query | . | M | 2.07.00 | 1395 |
| QW | Q&A Write Document | . | M | 2.19.00 | 999 |
| QWD | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QWD | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QWD | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QWD | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QWT | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QWT | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QWT | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QWT | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QXB | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QXB | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QXB | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QXB | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QXD | Quark XPress Document (MacBinary) | . | M | 2.16.00 | 1764 |
| QXD | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QXD | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QXD | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QXD | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QXL | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QXL | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QXL | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QXL | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QXT | Quark XPress Document/Template (English,Intel) | . | M | 2.13.00 | 1000 |
| QXT | Quark XPress Document/Template (English,Motorola) | . | M | 2.13.00 | 1439 |
| QXT | Quark XPress Document/Template (Korean,Intel) | . | M | 2.22.00 | 3112 |
| QXT | Quark XPress Document/Template (Korean,Motorola) | . | M | 2.22.00 | 3113 |
| QXT | Quark XPress Template (MacBinary) | . | M | 2.09.00 | 1765 |
| R | REBOL Script / Data | . | M | 2.17.00 | 1001 |
| R# | Borland Paradox Report Format | . | L | 1.05.00 | 557 |
| R2A | Yamaha Music Production Studio Seq. | . | M | 2.07.00 | 1504 |
| R2P | Yamaha Music Production Studio Pattern | . | M | 2.07.00 | 1505 |
| R2S | Yamaha Music Production Studio Song | . | M | 2.07.00 | 1506 |
| R3A | Yamaha Music Production Studio Sample | . | M | 2.07.00 | 1507 |
| R3P | Yamaha Music Production Studio Sample | . | M | 2.07.00 | 1507 |
| R8 | PictureMaker Red Channel Image Data | . | M | 2.08.00 | 1648 |
| R8? | MS Word for DOS/WordPerfect Font | . | M | 1.00.00 | 120 |
| RA | RealMedia Audio Sound | . | M | 2.07.00 | 1002 |
| RA | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RAD | Radiance 3D Scene Description | . | M | 2.17.00 | 2562 |
| RAD | Reality AdLib Tracker 2-op FM Music | . | M | 2.17.00 | 662 |
| RAM | RealMedia Audio Sound | . | M | 2.07.00 | 1002 |
| RAM | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RAM | RealMedia Metafile | . | M | 2.19.03 | 2833 |
| RAR | RAR Compressed Archive | . | M | 2.08.00 | 1252 |
| RAS | CALS Raster Image | . | M | 1.00.00 | 180 |
| RAS | Sun Raster Image | Y | M | 2.14.00 | 206 |
| RAST | Sun Raster Image | Y | M | 2.14.00 | 206 |
| RAW | HSI Raw Picture | Y | M | 1.00.00 | 194 |
| RAX | Romanian archiver eXpert Achive | . | M | 2.14.00 | 2308 |
| RAY | Rayshade 3D Scene | . | M | 2.22.00 | 1005 |
| RB | REALbasic Project | . | M | 2.11.00 | 2002 |
| RB | RocketEdition eBook | . | M | 2.11.00 | 2003 |
| RBH | RoboHELP Project Information | . | L | 2.00.00 | 1006 |
| RBS | ReBirth Song | . | M | 2.09.00 | 1720 |
| RBX | 3D Ultra Mini Golf Game Archive | . | M | 2.15.00 | 1071 |
| RC | C++ Dialogue Script | . | M | 2.03.06 | 572 |
| RC | C/C++ Source Code File | . | M | 2.22.00 | 406 |
| RC | MS Visual C++ Resource Script | . | M | 2.03.06 | 416 |
| RCS | RAD Developer Color Scheme | . | M | 2.11.00 | 2004 |
| RCT | MS Visual C++ Compiled Resources | . | M | 1.05.00 | 402 |
| RDB | Symphony Registry Database | . | M | 2.21.00 | 3013 |
| RDF | XML Resource Description Framework | Y | H | 2.16.00 | 1007 |
| RDG | Symphony Dialog Graphic Image | . | M | 2.21.00 | 3014 |
| RDL | Descent Registered Level | . | M | 2.17.00 | 1008 |
| RDM | MS Repository Information Model | . | M | 2.07.00 | 1552 |
| RDO | Raster Document Object | . | M | 2.10.00 | 664 |
| RDP | Remote Desktop Protocol Connection | . | M | 2.11.00 | 2005 |
| RDQ | Reduq Archive | . | M | 2.14.00 | 2309 |
| RDS | Ray Dream Studio Native Data Format | . | M | 2.11.00 | 2006 |
| REC | MS Recorder Macro | . | L | 2.00.00 | 1009 |
| REF | Ad-Aware Signature | . | M | 2.15.00 | 514 |
| REF | Slide Show Image | . | M | 1.00.00 | 300 |
| REG | Logitech Entertainment System | . | L | 2.00.00 | 832 |
| REG | MS Windows Registry Import File | . | M | 2.09.00 | 313 |
| REP | Lotus Organiser Report | . | M | 2.11.00 | 2007 |
| REP | PC File Letter / Report | . | M | 2.19.00 | 2774 |
| REP | WBEM Repository | . | M | 2.06.00 | 1310 |
| RES | MS Visual C++ Compiled Resources | . | M | 1.05.00 | 402 |
| RES | MS Windows Compiled Resources | . | M | 1.00.00 | 225 |
| RESOURCES | MS Visual Studio.NET Compiled Resource | . | M | 2.09.00 | 1804 |
| RESX | MS .NET Resource Schema/Template (XML) | . | H | 2.15.04 | 2180 |
| REX | ReCycled Audio Loop Export File | Y | M | 2.09.00 | 1721 |
| RFL | Reason Sound Bank | Y | M | 2.09.00 | 1722 |
| RFT | IBM DCA Revisable Form Text | . | M | 2.19.00 | 1010 |
| RGB | Real Pool Image | . | M | 1.05.00 | 387 |
| RGB | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| RGB8 | Turbo Silver 24bit RGB Image | Y | H | 2.18.01 | 2593 |
| RGBA | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| RGBN | Turbo Silver 12bit RGB Image | Y | H | 2.18.01 | 2594 |
| RGFX | IFF Retargetable Graphic Image | Y | H | 2.18.01 | 2652 |
| RGN | Yahoo! Online Protection Region File | . | M | 2.11.00 | 2088 |
| RGO | RepliGo Virtual Print File | . | M | 2.11.00 | 2008 |
| RGS | MS Visual C++ Registry Source | . | M | 2.13.00 | 422 |
| RHC | MS Outlook Remote Email | . | M | 2.03.06 | 1191 |
| RI | Lotus 123 File | . | M | 2.03.06 | 97 |
| RIB | RenderMan Interface Bytestream | . | M | 2.12.00 | 1011 |
| RIF | Resource Interchange File Format | Y | H | 2.20.00 | 212 |
| RIFF | Letraset Image | . | L | 2.00.00 | 1012 |
| RIFF | Resource Interchange File Format | Y | H | 2.20.00 | 212 |
| RIX | ColoRIX Image | Y | M | 1.00.00 | 174 |
| RK | RKive AUdio Compressed Audio | . | M | 2.15.00 | 2375 |
| RK | WinRK Archive | . | M | 2.15.00 | 2374 |
| RKA | RKive AUdio Compressed Audio | . | M | 2.15.00 | 2375 |
| RKAU | RKive AUdio Compressed Audio | . | M | 2.15.00 | 2375 |
| RL2 | Descent 2 Registered Level | . | L | 2.00.00 | 1013 |
| RL2 | Descent Registered Level | . | M | 2.17.00 | 1008 |
| RLA | Alias Wavefront Raster Image | . | M | 2.08.00 | 1014 |
| RLB | Alias Wavefront Raster Image | . | M | 2.08.00 | 1014 |
| RLC | DocuFile / EDMICS 2000 Image | . | M | 2.16.00 | 513 |
| RLE | ADEX ChromaGraph Image | Y | M | 2.15.00 | 178 |
| RLE | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| RLE | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| RLE | RLE Graphic Image | . | M | 1.00.00 | 91 |
| RLE | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| RLE | Utah Raster Toolkit Image | Y | M | 1.00.00 | 210 |
| RLG | Regcleaner Language File | . | M | 2.11.00 | 2009 |
| RLn | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| RLn | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| RM | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RMD | MS RegMaid Document | . | L | 2.00.00 | 1016 |
| RMF | Rich Map File | . | M | 2.17.00 | 1017 |
| RMI | MS Midi Musical Instrument Song (Intel) | Y | H | 1.00.00 | 311 |
| RMI | MS Midi Musical Musical Instrument Song (Motorola) | . | H | 2.17.00 | 2270 |
| RMI | Notation Interchange File Frmt (Intel) | . | M | 2.14.00 | 2271 |
| RMI | Notation Interchng File Fmt (Motorola) | . | H | 2.17.00 | 1926 |
| RMI | Standard Midi Sequencer Music | Y | H | 2.07.00 | 240 |
| RMJ | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RMS | Java Midlet | . | M | 2.16.00 | 2474 |
| RNC | Relax NG Compact Syntax File | Y | H | 2.16.00 | 2454 |
| Rnn | PC64 Native File | . | M | 2.08.00 | 1599 |
| Rnn | RAR Compressed Archive | . | M | 2.08.00 | 1252 |
| ROL | Ad-Lib Composer Music | Y | H | 1.00.00 | 23 |
| ROM | eCos ROM File System Image (ROMFS) | . | M | 2.14.00 | 2336 |
| ROM | ROM Chip Image | . | M | 2.07.00 | 256 |
| ROQ | Id Software RoQ Movie | . | M | 2.12.00 | 2108 |
| ROT | Home World 2 ROT Graphic Image | . | H | 2.10.00 | 1866 |
| ROV | Rescue Rover Data File | . | L | 2.00.00 | 1018 |
| RP | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RPA | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RPC | ACT! 2.0 Report | . | M | 1.00.00 | 208 |
| RPM | Red Hat Package Manager Archive | . | M | 2.07.00 | 1019 |
| RPN | ACT! 2.0 Report | . | M | 1.00.00 | 208 |
| RPS | Reason Song | Y | M | 2.09.00 | 1724 |
| RPT | Crystal Report | Y | H | 2.17.00 | 1020 |
| RPT | MS Access Report / Snapshot | Y | H | 2.17.00 | 1521 |
| RPT | PeopleSoft Report | . | M | 2.03.06 | 460 |
| RRD | Round-Robin Database | . | M | 2.19.03 | 2832 |
| RRS | Road Rash Saved Game | . | L | 2.00.00 | 1021 |
| RS | Sun Raster Image | Y | M | 2.14.00 | 206 |
| RSC | MS Visual Studio Compiled Resource | . | M | 2.13.00 | 1312 |
| RSD | Adobe Language Database | . | M | 2.13.00 | 433 |
| RSG | Drakan: Order Of The Flame Saved Game | . | M | 2.11.00 | 2011 |
| RSH | Warhammer 40,000 Texture | . | M | 2.11.00 | 2012 |
| RSL | Paradox 7 Report | . | L | 2.00.00 | 1022 |
| RSM | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| RSR | Macintosh Resource File (MacBinary) | . | M | 2.13.00 | 1788 |
| RSR | MS Visual Studio Compiled Resource | . | M | 2.13.00 | 1312 |
| RSR | Program Overlay | . | M | 1.00.00 | 27 |
| RT | RealMedia Audio/Video Stream | . | M | 2.13.00 | 1015 |
| RTE | Fugawi Global Navigator Route | . | M | 2.11.00 | 2013 |
| RTF | MS Rich Text Format Document | Y | H | 2.15.00 | 269 |
| RTF | MS Rich Text Format Document (Mac) | Y | H | 2.23.00 | 3299 |
| RTF | MS Rich Text Format Document (MacBinary) | . | M | 2.09.00 | 1756 |
| RTL | HP Raster Transfer Language Image | . | M | 1.00.00 | 201 |
| RTM | Real Tracker Music Module | . | M | 2.11.00 | 1023 |
| RTP | Adobe Remote Patch Update | . | M | 2.18.00 | 2091 |
| RTS | Id Software Internal Data (Doom) | . | M | 1.00.00 | 282 |
| RTX | Resource Texture Extension | . | M | 2.07.00 | 439 |
| RUL | CC:Mail Rule | . | M | 1.00.00 | 279 |
| RUL | Natural Language Processing Rule | . | M | 2.18.00 | 597 |
| RUL | Norton AntiVirus Scheduled Tasks | . | M | 2.18.00 | 2401 |
| RUN | 3D Environment | . | M | 1.00.00 | 244 |
| RUP | RealJukebox Upgrade | . | M | 2.10.00 | 1942 |
| RVP | MS Scan Configuration File | . | L | 2.00.00 | 1025 |
| RWX | RenderWare Script | . | M | 2.03.06 | 255 |
| RWZ | MS Exchange Settings | . | M | 2.00.00 | 1186 |
| RXD | Reflex Database | . | M | 1.00.00 | 138 |
| RXR | Reflex Report | . | M | 1.00.00 | 139 |
| RZ | Rzip Archive | . | M | 2.14.00 | 2310 |
| RZX | ZX Spectrum Replay File | . | M | 2.11.00 | 2014 |
| S | NitPicker Backup Ipflow File | . | M | 2.11.00 | 2015 |
| S01 | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| S1G | Sealed GIF Image | . | M | 2.16.00 | 2425 |
| S3I | Scream Tracker v3 Instrument/Sample | . | M | 2.07.00 | 1026 |
| S3M | Digital Multi-Track Module/Song | Y | M | 2.03.18 | 235 |
| SAD | Lucas Arts Sound (SAD) | Y | H | 1.00.00 | 70 |
| SAF | Standard Archive Format | . | M | 2.22.00 | 3041 |
| SAM | AMI Professional Document / Styles | Y | M | 2.19.00 | 1027 |
| SAMP | IFF Sound Sample | Y | H | 2.18.00 | 2638 |
| SAN | Lucas Arts Animation | . | M | 1.00.00 | 69 |
| SAR | Streamline Compressed Archive | . | M | 2.08.00 | 1630 |
| SAT | ACIS 3D Model | . | M | 2.17.00 | 2563 |
| SAT | SAdT Music Composer Module/Song | . | M | 2.14.00 | 826 |
| SAV | American McGee's Alice Saved Game File | . | M | 2.11.00 | 2016 |
| SAV | Chaser Saved Game | . | M | 2.07.00 | 1445 |
| SAV | Half-Life Saved Game | . | M | 1.05.00 | 367 |
| SAV | MS Windows Registry Hive | . | M | 2.00.00 | 101 |
| SAV | SPSS Data | . | M | 2.07.00 | 1446 |
| SAVE | Doom Saved Game | . | M | 2.10.00 | 682 |
| SB | SpinnerBaker eXtractor Compressed Archive | . | M | 2.08.00 | 1632 |
| SBC | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| SBC | PaperPort Database Map File | . | M | 2.14.00 | 2233 |
| SBC | SBC Compressed Audio | . | M | 2.08.00 | 1631 |
| SBI | Sound Blaster Instrument | Y | M | 1.00.00 | 189 |
| SBK | Toolbook Database | . | M | 2.11.00 | 250 |
| SBR | MS Visual C++ Debug File | . | M | 2.15.00 | 376 |
| SBW | Savings Bonds Wizard Data | . | M | 2.11.00 | 2018 |
| SBZ | ShowBiz Project File | . | M | 2.11.00 | 2019 |
| SC | Borland Paradox PAL Script File | . | L | 1.05.00 | 558 |
| SC2 | MS Schedule+ Schedule | . | L | 2.00.00 | 1031 |
| SC? | ColoRIX Image | Y | M | 1.00.00 | 174 |
| SCA | Norton AntiVirus Scheduled Tasks | . | M | 2.18.00 | 2401 |
| SCAN | Thunderscan Image | . | L | 2.00.00 | 1032 |
| SCC | MS Visual Source Safe Code Control | . | M | 2.13.00 | 1033 |
| SCC | Scenarist Closed Caption File | . | M | 2.13.00 | 2165 |
| SCD | MS Schedule+ Schedule | . | L | 2.00.00 | 1031 |
| SCD | Scodl Picture | . | M | 1.00.00 | 211 |
| SCD | Scribus Document | . | M | 2.11.00 | 2036 |
| SCENE | Sculpt3D Scene Model | Y | H | 2.18.00 | 1034 |
| SCF | MS Windows Explorer Command File | . | M | 2.15.00 | 1035 |
| SCH | Designer Schematic Capture Binary File | . | M | 2.11.00 | 2020 |
| SCH | MS Schedule+ Event | . | M | 2.14.00 | 2234 |
| SCH | PSpice Schematic | . | M | 2.11.00 | 1036 |
| SCI | ColoRIX Image | Y | M | 1.00.00 | 174 |
| SCI | ScanVec Inspire Native File | . | L | 2.00.00 | 1037 |
| SCITEX | SciTex ContinuousTone Image(MacBinary) | . | M | 2.09.00 | 1736 |
| SCK | Corel Support File | . | M | 2.07.00 | 1407 |
| SCM | MS Windows Color Scheme | Y | H | 2.17.00 | 2202 |
| SCM | ScreenCam Movie | . | M | 2.12.00 | 2109 |
| SCN | MS Album Media Scene | . | M | 2.06.00 | 1351 |
| SCN | Orbiter Scenario | . | M | 2.17.01 | 1040 |
| SCN | Pinnacle Studio Scene | . | M | 2.17.00 | 1038 |
| SCN | RTrace 3D Image | . | M | 2.22.00 | 3040 |
| SCN | TrueSpace 3D Object (ASCII) | . | M | 2.18.00 | 2665 |
| SCN | TrueSpace 3D Object (Binary) | . | M | 2.07.00 | 1470 |
| SCP | BITCOM Dial-Up Script File | . | M | 2.03.06 | 559 |
| SCPT | AppleScript Script | Y | M | 2.21.00 | 3023 |
| SCR | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| SCR | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| SCR | MS Windows 3.x Screen Saver | Y | H | 2.03.10 | 294 |
| SCR | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| SCR | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| SCR | Sun Raster Image | Y | M | 2.14.00 | 206 |
| SCR | UUNET Dial-in Script | . | M | 2.00.00 | 1230 |
| SCSF | Brava Reader Content Sealed Format | . | M | 2.10.00 | 1822 |
| SCT | SciTex ContinuousTone Image(MacBinary) | . | M | 2.09.00 | 1736 |
| SCT | SPSS Template | . | M | 2.21.00 | 2962 |
| SCX | ColoRIX Image | Y | M | 1.00.00 | 174 |
| SCX | MS FoxPro Form | . | L | 2.00.00 | 1041 |
| SCZ | ColoRIX Image | Y | M | 1.00.00 | 174 |
| SD | Sound Designer 1 Audio File | . | L | 2.00.00 | 1042 |
| SD2 | Sound Designer 2 Flattened File | . | L | 2.00.00 | 1043 |
| SDA | Arc Self-Disolving Compressed Archive (C64) | . | M | 2.08.00 | 1596 |
| SDA | StarDraw Image / Template | Y | H | 2.17.02 | 2608 |
| SDB | MS Windows Compatibility Solution Data | . | M | 2.23.00 | 627 |
| SDB | MS Windows Security Configuration Data | . | M | 2.03.06 | 1195 |
| SDC | StarCalc Spreadsheet / Template | Y | H | 2.17.02 | 2607 |
| SDD | Impress Presentation / Template | Y | H | 2.17.02 | 2540 |
| SDF | MS Windows Media Database | . | M | 2.06.00 | 1319 |
| SDF | SSCE Spelling Lexicon Database | . | M | 2.18.00 | 2721 |
| SDF | Standard-Delay-Format | . | M | 2.17.00 | 1044 |
| SDG | Symphony Dialog Graphic Image | . | M | 2.21.00 | 3014 |
| SDK | Roland S-series Floppy Image | . | L | 2.00.00 | 1045 |
| SDL | SmartDraw Library | . | L | 2.00.00 | 1046 |
| SDML | Spatial Data Modelling Language | . | M | 2.17.00 | 1047 |
| SDR | Print Shop/Print Master Images | . | M | 1.00.00 | 137 |
| SDR | SmartDraw Drawing | . | M | 2.13.00 | 1048 |
| SDS | Midi Sample Dump Standard (raw) | . | L | 2.00.00 | 1049 |
| SDT | SmartDraw Template | . | L | 2.00.00 | 1050 |
| SDV | Semicolon Divided Values File | . | H | 2.21.00 | 1051 |
| SDW | StarWriter Document / Template | Y | H | 2.17.02 | 1052 |
| SDX | Midi Sample Dump Standard (comp) | . | L | 2.00.00 | 1053 |
| SEA | Sea Archive | Y | M | 2.23.00 | 261 |
| SEE | SeeMail Video (MacBinary) | . | M | 2.16.00 | 449 |
| SEP | Printer Separator Page | . | M | 2.07.00 | 459 |
| SEP | Tag Image File Format (Intel) | Y | M | 1.00.00 | 321 |
| SEP | Tag Image File Format (MacBinary) | Y | M | 2.03.18 | 298 |
| SEP | Tag Image File Format (Motorola) | Y | M | 2.03.12 | 146 |
| SEQ | Cyber Paint Sequence Image | Y | M | 2.12.00 | 2141 |
| SER | Java Serialized Object | . | M | 2.12.03 | 440 |
| SES | Cool Edit Session File | . | L | 2.00.00 | 1054 |
| SET | Borland Paradox Settings File | . | L | 1.05.00 | 560 |
| SET | WordPerfect Setup/Installation Data | Y | M | 2.22.00 | 2254 |
| SF | IRCAM Audio Sample (Intel) | . | M | 2.17.00 | 2587 |
| SF | IRCAM Audio Sample (Motorola) | . | M | 2.17.00 | 2588 |
| SF0 | MS Download File Index | . | M | 2.07.00 | 425 |
| SF2 | E-mu SoundFont 2.0 MIDI Bank | . | H | 2.07.00 | 1055 |
| SF? | Bitstream Printer Font | . | M | 1.00.00 | 213 |
| SFARK | sfArk Compressed SoundFont | . | M | 2.11.00 | 2025 |
| SFC | MS Download File Index | . | M | 2.07.00 | 425 |
| SFD | SoundStage Sound File Data | . | L | 2.00.00 | 1056 |
| SFF | RTrace 3D Image | . | M | 2.22.00 | 3040 |
| SFF | Structured Fax Format Image | . | M | 2.08.00 | 1679 |
| SFI | SoundStage Sound File Information | . | L | 2.00.00 | 1057 |
| SFK | Sound Forge Peak Data File | . | M | 2.11.00 | 2026 |
| SFM | Creative SoundFont Manager Data | Y | M | 2.07.00 | 1414 |
| SFR | Sonic Foundry MIDI Sysex Sample Resource | . | M | 2.21.00 | 1058 |
| SFW | Seattle Film Works JPEG Image | . | L | 2.00.00 | 1059 |
| SFZ | SFzip SoundFont Archive | . | M | 2.08.00 | 1028 |
| SGA | Software Game Archive | . | M | 2.08.00 | 1633 |
| SGF | Sonique Document with Graphics | . | M | 2.11.00 | 2032 |
| SGI | Sealed GIF Image | . | M | 2.16.00 | 2425 |
| SGI | Silicon Graphics RGB Bitmap Image | Y | M | 2.13.00 | 176 |
| SGIF | Sealed GIF Image | . | M | 2.16.00 | 2425 |
| SGML | Standard Generalized Markup Lang | . | M | 2.21.00 | 1060 |
| SGO | Silicon Graphics Object | . | H | 2.22.00 | 1061 |
| SGT | DirectMusic Producer Segments Type | . | H | 2.10.00 | 1833 |
| SH | Python Tkinter / UNIX Shell Script | . | M | 2.16.00 | 987 |
| SH3 | Harvard Graphics Presentation | . | M | 2.19.00 | 974 |
| SHA | Corel Dream 3D Shader | . | M | 2.07.00 | 1396 |
| SHADE | Rayshade 3D Scene | . | M | 2.22.00 | 1005 |
| SHAR | UNIX Shell Archive | . | M | 2.14.00 | 2311 |
| SHB | Corel Show Presentation | . | M | 2.03.06 | 1062 |
| SHD | MS Print Spooler Shadow | . | M | 2.10.00 | 1946 |
| SHG | Segmented Hypergraphics Bitmap | . | M | 2.08.00 | 1680 |
| SHK | Shrinkit/Nulib/NuFile Archive | . | M | 2.23.00 | 2312 |
| SHN | Shorten Compressed Audio | . | M | 2.16.00 | 1723 |
| SHP | ArcView GIS Shape | . | M | 2.09.00 | 1063 |
| SHP | MS Office Imaging Language File | . | M | 2.12.00 | 1296 |
| SHP | Print Shop Art | . | M | 1.00.00 | 135 |
| SHP | Videoscape 3D Model with Colored Faces | . | M | 1.00.00 | 306 |
| SHR | Corel PhotoPaint Shear Map | . | M | 2.07.00 | 1397 |
| SHV | Viking Designer 1 Embroidery Image | . | M | 2.11.00 | 2024 |
| SHW | Corel Show Presentation | . | M | 2.03.06 | 1062 |
| SHW | Harvard Graphics Presentation for DOS | . | M | 2.19.00 | 2750 |
| SHX | ArcView GIS Shape | . | M | 2.09.00 | 1063 |
| SHX | AutoCAD Shape Entities | . | M | 2.13.00 | 2027 |
| SID | Commodore 64 PlaySID Music | . | M | 2.08.00 | 1593 |
| SID | Commodore 64 RealSID Music | . | M | 2.08.00 | 1594 |
| SID | MrSID Image | . | M | 2.21.00 | 2920 |
| SID | SIDPlayer Music Module | . | M | 2.14.00 | 2269 |
| SIG | PCA Security Signatures Catalog | . | M | 2.03.06 | 469 |
| SIG | SpyBot-Search-and-Destroy Signature | . | M | 2.11.00 | 2028 |
| SIR | Solitaire Image Recorder Image | . | M | 2.17.00 | 2595 |
| SIS | Symbian Installer | . | M | 2.19.03 | 2029 |
| SIT | StuffIt Mac Archive | . | M | 2.22.01 | 262 |
| SIT | StuffIt Mac Archive (MacBinary) | . | M | 2.09.00 | 1757 |
| SITX | StuffIt Mac Archive | . | M | 2.22.01 | 262 |
| SIX | DEC LN03+ Sixel Graphic Image | . | M | 2.08.00 | 1065 |
| SIXEL | DEC LN03+ Sixel Graphic Image | . | M | 2.08.00 | 1065 |
| SIZ | Oracle 7 Configuration File | . | M | 2.03.06 | 917 |
| SIZE | HP Digital Imaging Layout | . | H | 2.14.00 | 2243 |
| SK | Sketch Drawing | . | M | 2.11.00 | 2030 |
| SKA | Pretty Good Privacy (PGP) Private Keyring | . | M | 2.07.00 | 1066 |
| SKD | AutoSketch Drawing Database | . | M | 2.11.00 | 2031 |
| SKEL | Object Oriented Graphics Library: Skeleton | . | M | 2.17.00 | 2555 |
| SKIN | InstallShield Skin File | . | M | 2.17.00 | 1313 |
| SKL | Macromedia Director Resrcs (MacBinary) | . | M | 2.09.00 | 1067 |
| SKN | InstallShield Skin File | . | M | 2.17.00 | 1313 |
| SKN | Photono-Software Stealther Skin | . | M | 2.11.00 | 2033 |
| SKN | Sonic Skin | . | H | 2.15.00 | 2389 |
| SKN | Virtual TI Skin | . | M | 2.11.00 | 2034 |
| SKP | Google Sketchup Models | . | M | 2.19.02 | 2824 |
| SKR | Pretty Good Privacy (PGP) Private Keyring | . | M | 2.07.00 | 1066 |
| SKS | MS Expression 3 Skeletal Strokes | . | M | 2.11.00 | 2035 |
| SKY | SKY Compressed Archive | . | M | 2.08.00 | 1635 |
| SLA | Scribus Document | . | M | 2.11.00 | 2036 |
| SLAZ | Scribus Document | . | M | 2.11.00 | 2036 |
| SLB | AutoDesk Slide Library File | . | M | 2.17.00 | 1068 |
| SLD | AutoCAD Slide File | . | M | 2.11.00 | 1069 |
| SLK | Symbolic Link (SYLK) Spreadsheet | . | M | 2.12.00 | 561 |
| SLL | MS Windows Help Module | . | M | 2.00.00 | 338 |
| SLN | MS Visual Studio Solution | . | M | 2.15.00 | 1467 |
| SM3 | DataCAD Symbol File | . | L | 2.00.00 | 1070 |
| SMC | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| SMC | Super Nintendo System ROM Image | . | M | 2.19.03 | 2834 |
| SMF | Standard Midi Sequencer Music | Y | H | 2.07.00 | 240 |
| SMF | StarMath Formula | Y | H | 2.17.02 | 2541 |
| SMI | CC:Mail Smart Icon | . | M | 2.11.00 | 280 |
| SMI | Synchronized Multimedia Integrat. Lang | . | M | 2.14.00 | 2239 |
| SMIL | Synchronized Multimedia Integrat. Lang | . | M | 2.14.00 | 2239 |
| SMK | Smacker Compressed Movie | . | M | 2.12.00 | 2111 |
| SMP | MS Speech Recognition Engine Data | . | M | 2.06.00 | 1273 |
| SMP | Photo Express Pattern/Gallery | . | M | 2.11.00 | 1339 |
| SMP | PhotoImpact Presets/Clipart Images | . | M | 2.11.00 | 395 |
| SMP | SampleVision Sound | . | M | 2.11.00 | 2037 |
| SMP | Scream Tracker v3 Instrument/Sample | . | M | 2.07.00 | 1026 |
| SMT | IconAuthor SmartObject | . | M | 2.07.00 | 1398 |
| SMU | Simple Musical Score IFF MIDI | Y | H | 1.00.00 | 198 |
| SMUS | Simple Musical Score IFF MIDI | Y | H | 1.00.00 | 198 |
| SMV | Selectable Mode Vocoder Sound | . | M | 2.16.00 | 491 |
| SNC | Sonarc Compressed RAW PCM Audio | . | M | 2.09.00 | 1725 |
| SND | Amiga IFF/16SVX Sound | Y | H | 2.07.00 | 1522 |
| SND | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| SND | Audio IFF Compressed Sound | Y | H | 2.08.00 | 1693 |
| SND | Audio IFF Sound | Y | H | 2.18.00 | 323 |
| SND | DEC Sound | Y | M | 2.16.00 | 2422 |
| SND | Generic Sound Sample | Y | H | 2.07.00 | 1367 |
| SND | iNEW Emulator Audio | . | M | 2.17.00 | 2582 |
| SND | Interplay Sound | Y | M | 1.00.00 | 238 |
| SND | Macintosh Sound + Resource Fork | Y | M | 2.03.18 | 17 |
| SND | Music Studio Sound | . | M | 1.00.00 | 123 |
| SND | NeXT/Sun/UNIX Sound | Y | M | 1.15.00 | 265 |
| SND | Scream Tracker v3 Instrument/Sample | . | M | 2.07.00 | 1026 |
| SND | Sega FILM/CPK File Format | . | M | 2.12.00 | 2101 |
| SND | Software Toolworks Sound | Y | M | 1.00.00 | 307 |
| SND | Sounder Sound | Y | M | 1.00.00 | 276 |
| SND | SoundTool Sound | Y | H | 1.00.00 | 263 |
| SND | Wired For Sound | Y | H | 1.00.00 | 168 |
| SNDR | Sounder Sound | Y | M | 1.00.00 | 276 |
| SNDT | SoundTool Sound | Y | H | 1.00.00 | 263 |
| SNK | MS Visual Studio.NET Strong Name Key | . | M | 2.12.00 | 1805 |
| SNL | Egrid32 Form Snippet | . | M | 2.11.00 | 2038 |
| SNM | Netscape Folder Cache | . | M | 2.23.00 | 3264 |
| SNM | Netscape News/Mail Messages | . | M | 2.13.00 | 344 |
| Snn | EnCase Evidence Segment | . | M | 2.20.02 | 1440 |
| Snn | PC64 Native File | . | M | 2.08.00 | 1599 |
| Snn | RAR Compressed Archive | . | M | 2.08.00 | 1252 |
| SNP | ComputerEyes Animation | Y | M | 2.18.01 | 167 |
| SNP | MS Access Report / Snapshot | Y | H | 2.17.00 | 1521 |
| SNP | MS Access Report Snapshot (Compressed) | . | H | 2.07.01 | 1560 |
| SNW | Wired For Sound | Y | H | 1.00.00 | 168 |
| SNX | Slide Show Image | . | M | 1.00.00 | 300 |
| SO | UNIX Program Library (32-bit) | . | M | 2.14.00 | 2265 |
| SO | UNIX Program Library (64-bit) | . | M | 2.14.00 | 1251 |
| SOF | ReSOF Compressed Archive | . | M | 2.08.00 | 1636 |
| SOL | Macromedia Flash MX Shared Object Library | . | M | 2.10.00 | 435 |
| SOM | Borland Paradox Sort Information | . | L | 1.05.00 | 562 |
| SON | SoundBlaster Studio Song | . | M | 2.07.00 | 1399 |
| SOS | Adventure SOS Compiled Adventure Game | . | M | 2.11.00 | 2039 |
| SOU | Generic Sound Sample | Y | H | 2.07.00 | 1367 |
| SOU | Lucas Arts Sound (SOU) | Y | H | 1.00.00 | 71 |
| SOU | Sound Blaster Studio II Sound Sample | . | M | 2.09.00 | 1703 |
| SOU | SoundBlaster Studio II Sound | . | L | 2.00.00 | 1072 |
| SPC | SpchComp Encoded Speech/Audio | . | M | 2.07.00 | 1559 |
| SPC | Spectrum 512 Smooshed Image | . | M | 2.07.00 | 1073 |
| SPC | Super NES Music/Audio | . | M | 2.07.00 | 1558 |
| SPD | Bitstream Font | . | M | 2.14.00 | 278 |
| SPEEX | Speex Lossy Audio Codec Raw Audio | . | M | 2.17.00 | 2589 |
| SPF | HP Scanner Profile | . | M | 2.14.00 | 2236 |
| SPF | Jose SciEditor Project | . | M | 2.11.00 | 2041 |
| SPF | Still Picture Interchange File Format (SPIFF) | . | M | 2.21.00 | 2921 |
| SPH | Object Oriented Graphics Library: Sphere | . | M | 2.17.00 | 2556 |
| SPH | SPHERE Speech Recognition Waveform | . | M | 2.09.00 | 896 |
| SPIFF | Still Picture Interchange File Format (SPIFF) | . | M | 2.21.00 | 2921 |
| SPL | Infinity Game Engine Spell | . | M | 2.10.00 | 1872 |
| SPL | Printer Job Language Image | Y | H | 2.06.03 | 408 |
| SPL | Splint Archive | . | M | 2.14.00 | 1074 |
| SPLT | ASDG Split File | Y | H | 2.18.00 | 2639 |
| SPM | Norton Spam Filter Pattern | . | M | 2.18.00 | 666 |
| SPOT | SPOT Satellite Image | . | L | 2.00.00 | 1075 |
| SPPACK | SPPack Sound Sample | . | L | 2.00.00 | 1076 |
| SPR | Dreamcast Texture | . | M | 2.19.00 | 2772 |
| SPR | Pro Motion Sprites Sequence/Animation | . | M | 2.11.00 | 2042 |
| SPR | Sprint Document | . | M | 2.11.00 | 2043 |
| SPS | Spectrum 512 Smooshed Image | . | M | 2.07.00 | 1073 |
| SPU | Spectrum 512 Smooshed Image | . | M | 2.07.00 | 1073 |
| SPV | American McGee's Alice Saved Game File | . | M | 2.11.00 | 2016 |
| SPX | Speex Encoded Audio | . | M | 2.09.00 | 1727 |
| SQC | Structured Query Language Code | . | L | 2.00.00 | 1078 |
| SQL | Structured Query Language Query | . | M | 2.19.02 | 1079 |
| SQM | MS Windows Fax Cover Page (compiled) | . | M | 2.13.00 | 2162 |
| SQR | Structured Query Language Report / Program | . | M | 2.17.00 | 1080 |
| SQX | SQX Archiver Compressed Archive | . | M | 2.15.00 | 1638 |
| SQZ | Squeeze Compressed Archive | . | M | 2.08.00 | 1639 |
| SQZ | Sqweez Archive | . | M | 2.14.00 | 478 |
| SR | Sun Raster Image | Y | M | 2.14.00 | 206 |
| SRB | Corel ClipArt ScrapBook | Y | H | 2.17.00 | 2203 |
| SRF | Bezerk Acrophobia Data File | . | M | 1.05.00 | 388 |
| SRF | MS Visual C++ Server Repsonse File | . | M | 2.15.00 | 2193 |
| SRF | Terragen Surface Map | . | M | 2.13.00 | 2181 |
| SRI | Corel ClipArt ScrapBook | Y | H | 2.17.00 | 2203 |
| SRS | MS Outlook Send/Receive Settings | Y | H | 2.17.00 | 2204 |
| SRS | Sun Raster Image | Y | M | 2.14.00 | 206 |
| SRT | SPHERE Speech Recog Lexical Transcript | . | M | 2.09.00 | 1728 |
| SS | MS Works Spreadsheet 2 for Mac | . | M | 2.21.00 | 3010 |
| SS | MS Works Spreadsheet 3 for Mac | . | M | 2.21.00 | 3011 |
| SS2 | MS Works Spreadsheet 2 for Mac | . | M | 2.21.00 | 3010 |
| SS3 | MS Works Spreadsheet 3 for Mac | . | M | 2.21.00 | 3011 |
| SS4 | MS Works for Mac 4 Database/Doc/Sheet (OLE) | Y | H | 2.19.00 | 2757 |
| SSA | Aegisub Advanced SubStation Alpha Subtitle | . | M | 2.18.00 | 2707 |
| SSA | Aegisub Advanced SubStation Alpha Subtitle (Unicode) | . | M | 2.20.00 | 2867 |
| SSA | Empire Earth 1 Data | . | M | 2.20.00 | 2868 |
| SSA | Super Smooth Animation | Y | H | 2.23.00 | 3247 |
| SSF | Enable Spreadsheet | . | M | 2.20.00 | 1081 |
| SSF | GPS Pathfinder Office Almanac and Base Data | . | M | 2.19.00 | 2760 |
| ST | Atari ST Minix Disk Image | . | M | 2.22.00 | 1082 |
| STC | Adobe Acrobat Plug-In | . | M | 2.07.00 | 1400 |
| STC | OpenOffice Spreadsheet / Template | Y | H | 2.21.00 | 2613 |
| STC | Stonecracker Archive | . | M | 2.14.00 | 479 |
| STD | OpenOffice Drawing / Template | Y | H | 2.21.00 | 2610 |
| STE | RealPlayer Selected Track | . | M | 2.11.00 | 1004 |
| STF | MS Setup File | . | M | 2.06.00 | 1314 |
| STI | OpenOffice Impress Presentation / Template | Y | H | 2.21.00 | 2612 |
| STK | HyperStudio Stack (MacBinary) | . | M | 2.16.00 | 2447 |
| STK | Sticker Store Sticker | . | M | 1.00.00 | 266 |
| STL | 3D Systems Stereolithography CAD Image (ASCII) | . | H | 2.22.00 | 3172 |
| STL | 3D Systems Stereolithography CAD Image (Binary) | . | M | 2.22.00 | 3173 |
| STM | Amiga ScreamTracker Music | Y | M | 2.11.00 | 141 |
| STM | Prosa State Transition Diagram Model | . | M | 2.17.00 | 1064 |
| STUFF | EVE Online Game Contents Archive | . | M | 2.15.00 | 590 |
| STW | OpenOffice Text Document / Template | Y | H | 2.21.00 | 2614 |
| STX | Amiga ScreamTracker Music | Y | M | 2.11.00 | 141 |
| STX | StockChartX Data | . | M | 2.11.00 | 2046 |
| STY | AMI Professional Document / Styles | Y | M | 2.19.00 | 1027 |
| STY | DirectMusic Style | . | H | 2.10.00 | 1834 |
| STY | Label Factory Deluxe Style | . | M | 2.14.00 | 2230 |
| STY | MS DirectMusic Style | . | H | 2.07.00 | 1471 |
| STY | MS Word for DOS Style Sheet | . | M | 1.00.00 | 119 |
| STY | Music Studio File | . | M | 1.00.00 | 124 |
| STY | Ventura Publisher File | . | M | 1.00.00 | 152 |
| STYLEDEF | Document Style Definition | . | H | 2.17.00 | 582 |
| SUB | CloneCD Sub Channel Data | . | M | 2.08.00 | 1689 |
| SUD | MS Windows Registry Import File | . | M | 2.09.00 | 313 |
| SUI | Simple User Interface Toolkit Library | . | M | 2.11.00 | 2047 |
| SUN | NeXT/Sun/UNIX Sound | Y | M | 1.15.00 | 265 |
| SUN | Sun Raster Image | Y | M | 2.14.00 | 206 |
| SUN | SUNTronic Song/Module | . | M | 2.11.00 | 2048 |
| SUNIFF | Sun TAAC Image File | . | L | 2.00.00 | 794 |
| SUO | MS Visual Studio Solution User Options | Y | H | 2.17.00 | 2195 |
| SUP | Corel Supplemental Dictionary | . | M | 2.07.00 | 442 |
| SURF | 3D-XplorMath Image | . | M | 2.17.00 | 2564 |
| SVE | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| SVF | Simple Vector Format Image | . | M | 2.11.00 | 1083 |
| SVG | Scalable Vector Graphics Image | . | H | 2.05.00 | 1264 |
| SVG | SuperView Graphic Bitmap | . | M | 2.08.00 | 1681 |
| SVX | Amiga IFF/16SVX Sound | Y | H | 2.07.00 | 1522 |
| SVX | Amiga IFF/8SVX Sound | Y | H | 1.00.00 | 25 |
| SWA | Shockwave Audio | . | M | 2.07.00 | 1084 |
| SWF | Shockwave Flash Object | Y | H | 2.23.00 | 429 |
| SWF | Shockwave Flash Object (MacBinary) | . | M | 2.09.00 | 1759 |
| SWG | Swag Reader Packet | . | M | 2.11.00 | 2049 |
| SWP | MS Windows Swap File | . | L | 1.05.00 | 350 |
| SWT | Setup Information | . | M | 2.15.02 | 455 |
| SX | MS Network Driver Protocol Support | . | M | 2.07.00 | 1472 |
| SXC | OpenOffice Spreadsheet / Template | Y | H | 2.21.00 | 2613 |
| SXD | OpenOffice Drawing / Template | Y | H | 2.21.00 | 2610 |
| SXI | OpenOffice Impress Presentation / Template | Y | H | 2.21.00 | 2612 |
| SXM | OpenOffice Math Formula | Y | H | 2.21.00 | 2611 |
| SXW | OpenOffice Text Document / Template | Y | H | 2.21.00 | 2614 |
| SY | MS Network Driver Protocol Support | . | M | 2.07.00 | 1472 |
| SY0 | PC Stomper Data File | . | M | 2.18.00 | 1283 |
| SYD | Adobe Language Database | . | M | 2.13.00 | 433 |
| SYM | Lotus Freelance Graphics 97 File | . | M | 2.08.04 | 976 |
| SYM | Symbolic Debugging Definitions | . | M | 2.11.00 | 563 |
| SYS | DOS Program | Y | M | 1.00.00 | 15 |
| SYS | DOS Program (Tiny) | Y | M | 2.18.00 | 30 |
| SYS | Initialization File | . | M | 2.23.00 | 456 |
| SYS | Keyboard System Driver | . | M | 2.00.00 | 1216 |
| SYS | MS Windows .NET Program (32 bit) | Y | H | 2.18.00 | 2682 |
| SYS | MS Windows .NET Program (64 bit) | Y | H | 2.18.00 | 2683 |
| SYS | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| SYS | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| SYS | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 290 |
| SYS | MS Windows NT System Driver | . | M | 2.00.00 | 1204 |
| SYS | MS Windows Program (32 bit) | Y | H | 2.03.10 | 77 |
| SYS | MS Windows Program (64 bit) | Y | H | 2.18.00 | 2681 |
| SYS | PlayStation 2 Icon | . | M | 2.11.00 | 2050 |
| SYS | System Driver | . | H | 2.09.00 | 214 |
| SYW | Harvard Graphics Symbol Image | . | M | 2.19.00 | 2735 |
| SYW | Yamaha SY-Series Wave File | . | L | 2.00.00 | 1085 |
| SZ | SZip Compressed File | . | M | 2.08.00 | 1640 |
| SZIP | SZip Compressed File | . | M | 2.08.00 | 1640 |
| T#? | Time Line File | . | M | 1.00.00 | 147 |
| T2T | Sonata CAD Modelling File | . | L | 2.00.00 | 1086 |
| T3 | Text Adventure Development System Img. | . | M | 2.07.00 | 1508 |
| T64 | Commodore 64s Emulator Tape Image | . | M | 2.08.00 | 1592 |
| TA0 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA1 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA2 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA3 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA4 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA8 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TA9 | TaxACT Form | . | M | 2.06.00 | 1315 |
| TAAC | Sun TAAC Image File | . | L | 2.00.00 | 794 |
| TAB | MapInfo Spatial Table | . | M | 2.11.00 | 2051 |
| TAK | TAK Lossless Compressed Audio | . | M | 2.15.00 | 2384 |
| TAn | TaxACT Form | . | M | 2.06.00 | 1315 |
| TAP | Atmos Snapshot | . | M | 2.07.00 | 1455 |
| TAP | Commodore 64 Raw Cassette Tape Image | . | M | 2.08.00 | 1591 |
| TAP | Jupiter Ace Tape | . | M | 2.11.00 | 2052 |
| TAP | ZX Spectrum Tape File | . | M | 2.11.00 | 2053 |
| TAR | GNU TAR Archive | . | M | 2.14.00 | 2313 |
| tar | Gzip Unix Archive | . | M | 2.22.00 | 44 |
| TAR | Opengroup/POSIX TAR Archive | . | M | 2.22.00 | 2314 |
| TAR | Tape Archive File | . | M | 2.19.03 | 1087 |
| TARGA | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| TAX | TurboTax Tax Return | . | M | 2.11.00 | 2093 |
| TAZ | Tape Archive (Compressed with Gzip) | . | M | 2.07.00 | 1088 |
| TBB | MS Windows Office Toolbar Button | . | M | 1.04.01 | 339 |
| TBB | The Bat! Email Hives | . | M | 2.11.00 | 2056 |
| TBD | MS Visual Studio Toolbox Data | . | M | 2.13.00 | 1949 |
| TBK | Toolbook Database | . | M | 2.11.00 | 250 |
| TBS | Chess Tablebase | . | M | 2.11.00 | 2054 |
| TBV | 3D Ultra Pinball Game Archive | . | M | 2.15.00 | 1039 |
| TBV2 | Bzip Archive V2 | . | M | 2.19.00 | 1426 |
| TC | TrueCrypt Dynamic File | . | M | 2.23.00 | 3175 |
| TCH | Turbo C Help | . | M | 2.14.00 | 2319 |
| TCL | Python Tkinter / UNIX Shell Script | . | M | 2.16.00 | 987 |
| TD0 | TeleDisk Archive | Y | M | 2.11.00 | 112 |
| TD1 | TeleDisk Archive | Y | M | 2.11.00 | 112 |
| TD2 | TeleDisk Archive | Y | M | 2.11.00 | 112 |
| TD3 | TeleDisk Archive | Y | M | 2.11.00 | 112 |
| TD? | TeleDisk Archive | Y | M | 2.11.00 | 112 |
| TDB | Thumbs Plus Database | . | H | 2.17.00 | 1089 |
| TDD | Imagine 3D Object | Y | H | 2.18.00 | 2293 |
| TDDD | Imagine 3D Object | Y | H | 2.18.00 | 2293 |
| TDF | MS Temporary Disk File | . | M | 2.10.00 | 1231 |
| TEX | Corel Draw Texture | . | M | 2.10.00 | 1401 |
| TFM | Transform Compressed File | . | M | 2.08.00 | 1641 |
| TFX | The Final Musicsystem eXtended Module Music | . | M | 2.17.00 | 2583 |
| TGA | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| TGZ | Tape Archive (Compressed with Gzip) | . | M | 2.07.00 | 1088 |
| THEME | HP Digital Imaging Theme | . | H | 2.14.00 | 2244 |
| THEME | MS Windows Desktop Theme | . | M | 2.06.00 | 361 |
| THM | JPEG File Interchange File | Y | H | 2.19.00 | 185 |
| THN | Graphics Workshop / GIF Cons Thumbnail | . | M | 2.06.00 | 1345 |
| THS | Corel Thesaurus | . | M | 2.07.00 | 1402 |
| THS | MS Proofing/Language Dictionary | . | M | 2.13.00 | 1184 |
| TIB | Acronis TrueImage Disk Image | . | M | 2.19.03 | 2835 |
| TIF | Big Tag Image File Format | Y | M | 2.21.00 | 2929 |
| TIF | Tag Image File Format (Intel) | Y | M | 1.00.00 | 321 |
| TIF | Tag Image File Format (MacBinary) | Y | M | 2.03.18 | 298 |
| TIF | Tag Image File Format (Motorola) | Y | M | 2.03.12 | 146 |
| TIFF | Big Tag Image File Format | Y | M | 2.21.00 | 2929 |
| TIFF | Tag Image File Format (Intel) | Y | M | 1.00.00 | 321 |
| TIFF | Tag Image File Format (MacBinary) | Y | M | 2.03.18 | 298 |
| TIFF | Tag Image File Format (Motorola) | Y | M | 2.03.12 | 146 |
| TIG | Tiger Map File | . | L | 2.00.00 | 1092 |
| TIM | Tag Image File Format (Motorola) | Y | M | 2.03.12 | 146 |
| TIN | Triangular Irregular Network | . | M | 2.17.00 | 2565 |
| TIP | MS Tip of the Day File | . | M | 2.03.06 | 420 |
| TIS | Infinity Game Engine Tileset | . | M | 2.10.00 | 1873 |
| TJS | Trackjoy GUS Tracker Song | . | M | 2.10.00 | 1885 |
| TK3 | TK3 eBook | . | M | 2.11.00 | 2058 |
| TLB | MS Windows .NET Library (32 bit) | Y | H | 2.18.00 | 2686 |
| TLB | MS Windows .NET Library (64 bit) | Y | H | 2.18.00 | 2685 |
| TLB | MS Windows Library (32 bit) | Y | H | 2.03.10 | 325 |
| TLB | MS Windows Library (64 bit) | Y | H | 2.18.00 | 2684 |
| TLB | MS Windows OLE Type Library | . | M | 2.11.00 | 100 |
| TLG | QuickBooks for Windows Backup (Encrypted) | . | M | 2.23.00 | 3304 |
| TLO | SPSS User Table Lookup | . | M | 2.11.00 | 2045 |
| TLX | SSCE Spelling Lexicon Dictionary | . | M | 2.23.00 | 2146 |
| TM2 | PlayStation2 TIM2 Bitmap | . | M | 2.08.00 | 1091 |
| TMD | RealMedia Metadata Backup | . | M | 2.06.00 | 1316 |
| TMD | TextMaker Document | . | M | 2.11.00 | 2059 |
| TMD | World Machine Data File | . | M | 2.11.00 | 2060 |
| TMP | AddWeb Temporary Data | . | M | 2.10.00 | 1955 |
| TMP | Id Software Game Map (Quake) | . | M | 1.05.00 | 385 |
| TMP | MS Search Log | . | M | 2.18.00 | 628 |
| TMP | MS Windows Enhanced Metafile | . | M | 2.07.00 | 702 |
| TMP | MS Write / Word Backup | Y | H | 2.17.00 | 1136 |
| TMP | Temporary Data File (Unknown Source) | . | L | 1.05.00 | 379 |
| TMS | Telemate Script | . | M | 2.11.00 | 2061 |
| TMUI | ToolMaker User Interface Design | Y | H | 2.18.00 | 2640 |
| TNEF | MS Outlook Rich Text Formatted Message | . | H | 2.22.01 | 1811 |
| TOC | Eudora Mailbox Table of Contents (MacBinary) | . | M | 2.21.00 | 1093 |
| TOL | Kodak Color Management System Profile | . | M | 2.21.00 | 1094 |
| TOP | TOP4 Archive | . | M | 2.22.00 | 3072 |
| TORRENT | BitTorrent Metainfo | . | M | 2.07.00 | 1403 |
| TP | Turbo Pascal Unit | . | M | 1.00.00 | 226 |
| TPA | Corel Support File | . | M | 2.07.00 | 1407 |
| TPH | Turbo Pascal Help | . | M | 2.11.00 | 2062 |
| TPJ | MS DirectMusic Support File | . | M | 2.13.00 | 1220 |
| TPL | CakeWalk Audio Template File | . | L | 2.00.00 | 1095 |
| TPL | Label Factory Deluxe Template | . | M | 2.14.00 | 2228 |
| TPL | MS DirectMusic Support File | . | M | 2.13.00 | 1220 |
| TPP | Teleport Pro Project | . | M | 2.11.00 | 1096 |
| TPU | Turbo Pascal Unit | . | M | 1.00.00 | 226 |
| TR | Symbian TomeRaider Compressed eBook Document | . | M | 2.11.00 | 2063 |
| TR1 | Novell LANalyzer Capture | . | M | 2.07.00 | 1441 |
| TREE | QED Symbolic Math Data Structure | Y | H | 2.18.00 | 2641 |
| TRK | Fugawi Global Navigator Tracklog | . | M | 2.11.00 | 2064 |
| TRK | GeneRally Track | . | M | 2.11.00 | 1097 |
| TRKR | IFF Tracker Song | Y | H | 2.18.00 | 2642 |
| TRM | MS Terminal File | . | M | 2.03.06 | 1098 |
| TRN | GTCoach Training Lesson | . | M | 2.06.00 | 1346 |
| TRN | MKS Source Integrity Project Use | . | L | 2.00.00 | 1099 |
| TRV | Track Record Viewer TRV/TRVX Definition | . | M | 2.11.00 | 2065 |
| TRX | Track Record Viewer TRV/TRVX Index | . | M | 2.11.00 | 2066 |
| TSC | MS Windows Help Text Search | . | M | 1.05.00 | 370 |
| TST | ExamView Test File | . | M | 2.14.00 | 2221 |
| TST | TAC Compressed Audio | . | M | 2.09.00 | 1729 |
| TSV | Tab Separated Values Text File | Y | H | 2.15.00 | 1258 |
| TTA | TTA (True Audio) Free Lossless Audio | . | M | 2.16.00 | 2405 |
| TTC | TrueType Font Collection | . | M | 2.13.00 | 2159 |
| TTD | Textual 3D Data Description | . | M | 2.22.00 | 3042 |
| TTDDD | Textual 3D Data Description | . | M | 2.22.00 | 3042 |
| TTF | IBM OS/2 True Type Font | . | M | 1.05.00 | 260 |
| TTF | Macintosh True Type Font (MacBinary) | . | M | 2.09.00 | 1790 |
| TTF | MS Windows 3.1 True Type Font | . | M | 1.00.00 | 221 |
| TTF | MS Windows True Type Font | . | M | 2.06.00 | 357 |
| TTP | Atari ST MiNT Program | . | M | 2.14.00 | 2266 |
| TTP | Atari ST TOS Program | . | M | 2.11.00 | 1994 |
| TUB | Paint Shop Pro Image | Y | M | 2.14.00 | 1305 |
| TVH | Turbo Vision Help | . | M | 2.14.00 | 2320 |
| TVP | NView Graphic Card Update Profile | . | M | 2.13.00 | 2155 |
| TWD | MS Windows OLE Type Library | . | M | 2.11.00 | 100 |
| TWF | TabWorks File | . | L | 2.00.00 | 1100 |
| TWW | Tagwrite Template | . | M | 2.11.00 | 1101 |
| TXT | Apple Email Message | Y | H | 2.22.01 | 536 |
| TXT | Eudora Email Message | Y | H | 2.22.01 | 933 |
| TXT | Evolution Email Message | Y | H | 2.22.01 | 538 |
| TXT | Global Message Exchange Email Message | Y | H | 2.22.01 | 540 |
| TXT | Gmail Email Message | Y | H | 2.22.01 | 539 |
| TXT | HashKeeper Hash Database | . | M | 2.07.00 | 1474 |
| TXT | HashKeeper Hash Database Index | . | M | 2.07.00 | 1475 |
| TXT | Horde Internet Messaging Program (IMP) Email Message | Y | H | 2.22.01 | 542 |
| TXT | Hotmail Email Message | Y | H | 2.22.01 | 578 |
| TXT | Internet Message | Y | H | 2.22.01 | 703 |
| TXT | Internet Message (MIME) | Y | H | 2.22.01 | 1262 |
| TXT | Internet Message (UU-Encoded) | Y | H | 2.22.01 | 1263 |
| TXT | Logitech RSA Crypto Key | . | M | 2.18.00 | 1146 |
| TXT | Microsoft Mail Email Message | Y | H | 2.22.01 | 545 |
| TXT | Microsoft Outlook 2000 IMO Email Message | Y | H | 2.22.01 | 574 |
| TXT | MS Media Connect Persistent Data | . | M | 2.10.00 | 1954 |
| TXT | MS Office Outlook 2003 Email Message | Y | H | 2.22.01 | 571 |
| TXT | MS Outlook Express Email Message | Y | H | 2.22.01 | 575 |
| TXT | Mutt Email Message | Y | H | 2.22.01 | 546 |
| TXT | NIST NSRL Hash Database | . | M | 2.07.00 | 1377 |
| TXT | Nonlinear Uniform Rational B-Spl | . | L | 2.00.00 | 903 |
| TXT | Open WebMail Email Message | Y | H | 2.22.01 | 550 |
| TXT | Pine Email Message | Y | H | 2.22.01 | 577 |
| TXT | PKCS #7 Secure MIME Message | . | M | 2.22.01 | 1810 |
| TXT | Pretty Good Privacy Key/Signature Text | . | M | 2.16.00 | 2414 |
| TXT | SimpleText Document (MacBinary) | . | M | 2.09.00 | 1773 |
| TXT | Tab Separated Values Text File | Y | H | 2.15.00 | 1258 |
| TXT | Text File | Y | H | 2.22.00 | 3 |
| TXT | Text File (MacBinary) | . | M | 2.09.00 | 1734 |
| TXT | Text File (UTF-8) | . | M | 2.03.12 | 1254 |
| TXT | Text File: Unicode/DoubleByte/UTF-16LE | . | M | 2.10.03 | 1242 |
| TXT | The Bat! Email Message | Y | H | 2.22.01 | 2604 |
| TXT | Thunderbird Email Message | Y | H | 2.22.01 | 2605 |
| TXT | Yahoo! Mail Email Message | Y | H | 2.22.01 | 2606 |
| TXW | Yamaha TX16W Wave Sound | Y | M | 2.23.00 | 1103 |
| TZX | MakeTZX ZX Spectrum Tape Image | . | M | 2.11.00 | 2067 |
| U | Subsampled Raw YUV Bitmap | . | L | 2.00.00 | 1170 |
| U98 | USA 98: Streets & Destination Tour | . | M | 1.05.00 | 398 |
| U?? | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UAE | WinUAE Game Configuration | . | M | 2.07.00 | 1509 |
| UAX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UC2 | UltraCompressor II compressed archive | . | M | 2.14.00 | 1643 |
| UCE | Unicode Extensions | . | M | 2.20.00 | 1190 |
| UCF | WebEx Universal Communications Data | . | M | 2.21.00 | 3025 |
| UCT | Sybase Translation Table | . | M | 2.23.00 | 3305 |
| UDD | OllyDbg Module Information | . | M | 2.11.00 | 2068 |
| UDF | X-ray Diffraction Data | . | M | 2.17.00 | 1104 |
| UDI | Corel Draw Script Texture | . | M | 2.07.00 | 1404 |
| UEF | Unified Emulator Format | . | M | 2.10.00 | 1844 |
| UEZ | Cool 3D Image | . | M | 2.11.00 | 2069 |
| UFA | UFA Compressed Archive | . | M | 2.07.00 | 1438 |
| UFM | Unicode Font Metrics | . | M | 2.13.00 | 2161 |
| UFO | PhotoImpact Graphic Image | Y | H | 2.17.00 | 2205 |
| UHA | UHArc Compressed Archive | . | M | 2.14.00 | 484 |
| UHS | Universal Hint System File | . | M | 2.11.00 | 2070 |
| UIL | Motif Icon File | . | L | 2.00.00 | 1105 |
| UKX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| ULAW | US Telephony Audio File | . | L | 2.00.00 | 1106 |
| ULK | MS Windows Internet Shortcut | . | M | 2.00.00 | 140 |
| ULT | Ultra Tracker Module Music | . | M | 2.17.00 | 1107 |
| UMX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UNI | APlayer Module Music | . | M | 2.17.00 | 2584 |
| UNI | Mikmod Module Music | . | M | 2.17.00 | 2585 |
| UNITYWEB | Unity3d Environment | . | M | 2.16.00 | 486 |
| Unn | PC64 Native File | . | M | 2.08.00 | 1599 |
| UNR | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UOL | PhotoImpact Presets/Clipart Images | . | M | 2.11.00 | 395 |
| UPDATE | AddWeb Update | . | M | 2.06.00 | 1317 |
| UPM | McAfee VirusScan Update | . | M | 2.11.00 | 2092 |
| URL | MS Internet Explorer Shortcut (MacBinary) | . | M | 2.09.00 | 1776 |
| URL | MS Windows Internet Shortcut | . | M | 2.00.00 | 140 |
| URT | Utah Raster Toolkit Image | Y | M | 1.00.00 | 210 |
| US? | MS Word for DOS/WordPerfect Font | . | M | 1.00.00 | 120 |
| USE | MKS Source Integrity File | . | L | 2.00.00 | 1108 |
| USER | MS C#.NET Project | . | M | 2.23.00 | 554 |
| USER | MS Visual Basic.NET Project | . | M | 2.13.00 | 679 |
| USER | MS Visual C++.NET Project | . | H | 2.13.00 | 2183 |
| USER | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| USERPROFILE | Norton AntiVirus Live Update Profile | . | M | 2.14.00 | 2218 |
| USERPROFILE | Norton AntiVirus Update Session | . | M | 2.14.00 | 2217 |
| USR | Corel PhotoPaint User Defined Filter | . | M | 2.07.00 | 1405 |
| USS | WinUAE Saved State | . | M | 2.11.00 | 2071 |
| UST | Sybase Translation Table | . | M | 2.23.00 | 3305 |
| USX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UTF | Unicode Type Font | . | M | 2.13.00 | 2182 |
| UTX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UU | UU-Encoded File | Y | H | 2.03.15 | 1109 |
| UUE | UU-Encoded File | Y | H | 2.03.15 | 1109 |
| UVX | Unreal Game Archive | . | M | 2.15.00 | 382 |
| UWF | UltraTracker Wave Audio | . | M | 2.09.00 | 1110 |
| UWL | GroupWise User Word List | . | M | 2.19.03 | 2836 |
| V | Subsampled Raw YUV Bitmap | . | L | 2.00.00 | 1170 |
| V00 | Kretz JPEG Picture | Y | M | 2.06.00 | 1318 |
| V3S | Voice Master Key Sound | Y | M | 1.00.00 | 156 |
| V8 | Voice Master Key Sound | Y | M | 1.00.00 | 156 |
| VAG | PlayStation ADPCM Sound | . | M | 2.07.00 | 1524 |
| VAL | Borland Paradox Validity Check | . | L | 1.05.00 | 565 |
| VB | MS Visual BASIC Source Code | . | H | 2.09.01 | 1214 |
| VB | MS Visual Basic.NET Source Code | . | M | 2.23.00 | 607 |
| VB | Source Code (General) | . | M | 2.23.00 | 1256 |
| VBD | MS Visual Basic Active Document | Y | H | 2.17.00 | 1357 |
| VBDPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| VBG | MS Visual Basic Group Project | . | M | 2.07.00 | 1466 |
| VBK | Nortel Voice Block Sound (MacBinary) | . | M | 2.16.00 | 508 |
| VBP | MS Visual Basic Project | . | M | 2.07.00 | 1112 |
| VBPROJ | MS Visual Basic.NET Project | . | M | 2.13.00 | 679 |
| VBPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| VBS | MS Visual BASIC Source Code | . | H | 2.09.01 | 1214 |
| VBS | Source Code (General) | . | M | 2.23.00 | 1256 |
| VBW | MS Visual Basic Workspace | . | M | 2.00.00 | 1113 |
| VBX | MS Visual Basic Custom Control | . | L | 2.00.00 | 1114 |
| VBX | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 292 |
| VBX | MS Windows Library (16 bit) | Y | H | 2.03.10 | 291 |
| VC | Sonarc Compressed VOC Audio | . | M | 2.07.00 | 1525 |
| VC | VisiCalc Spreadsheet | . | H | 2.19.00 | 566 |
| VCD | Video CD | . | M | 2.19.03 | 2837 |
| VCE | Visual CertExam Suite Exam | . | M | 2.17.00 | 1115 |
| VCF | Virtual Business Card File | . | M | 2.12.02 | 421 |
| VCPREF | Norton AntiVirus Live Advisor Preferences | . | M | 2.14.00 | 2216 |
| VCPROJ | MS Visual C++.NET Project | . | H | 2.13.00 | 2183 |
| VCS | Virtual Calendar File | . | M | 2.18.00 | 2072 |
| VCSTYLE | MS Visual C++.NET Style Sheet | . | H | 2.13.00 | 2191 |
| VCT | MS FoxPro Class Library | . | L | 2.00.00 | 1116 |
| VCW | MS Visual C++ Workbench Information | . | M | 2.19.00 | 2752 |
| VCX | MS FoxPro Class Library | . | L | 2.00.00 | 1116 |
| VD | PwrDev Visual Designer Project | . | M | 2.11.00 | 2073 |
| VDA | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| VDB | Dr. Web Anti-Virus Database | . | M | 2.11.00 | 2074 |
| VDB | VistaDB Database | . | M | 2.11.00 | 2075 |
| VDI | GEM Metafile Image | . | M | 1.00.00 | 87 |
| VDI | GEM Metafile Image (Intel) | . | M | 2.14.00 | 2281 |
| VDI | GEM Metafile Image (Motorola) | . | M | 2.14.00 | 2280 |
| VDI | Virtual Box Disk Image | . | M | 2.23.00 | 3207 |
| VDPROJ | MS Visual Studio.NET Deployment Project | . | M | 2.13.00 | 2184 |
| VECT | Object Oriented Graphics Library: Vectors (ASCII) | . | M | 2.17.00 | 2553 |
| VECT | Object Oriented Graphics Library: Vectors (Binary) | . | M | 2.17.00 | 2554 |
| VEG | Sonic Foundry Data | . | M | 2.11.00 | 2076 |
| VFF | Sun TAAC Image File | . | L | 2.00.00 | 794 |
| VFW | MS Audio/Visual Interleave (Intel) | Y | H | 2.11.00 | 234 |
| VFW | MS Audio/Visual Interleave (Motorola) | Y | H | 2.17.00 | 2599 |
| VGA | MS Windows Bitmap | Y | M | 2.18.00 | 5 |
| VGA | MS Windows Bitmap (MacBinary) | . | M | 2.09.00 | 1778 |
| VGS | Virtual Game Station Memory Card Save | . | M | 2.12.00 | 2095 |
| VHD | MS Virtual PC Hard Disk Image | . | H | 2.14.00 | 2335 |
| VHD | MS Virtual Server Hard Disk Image | . | H | 2.17.00 | 579 |
| VI | FreeFlow Variable Information (VI) Project | . | M | 2.17.00 | 1111 |
| VI | Jovian Logic Video Capture File | Y | M | 1.00.00 | 184 |
| VI | LABView Virtual Instrument | . | M | 2.17.00 | 1117 |
| VIC | MS Visual Interdev Cache | . | M | 2.07.00 | 535 |
| VIC | Vicar Picture | . | M | 2.15.00 | 2385 |
| VID | VideoScape File | . | L | 2.00.00 | 1118 |
| VIF | Khoros Visualization Image | Y | M | 2.15.00 | 1119 |
| VIFF | Khoros Visualization Image | Y | M | 2.15.00 | 1119 |
| VIM | Vi IMproved Encrypted File | . | M | 2.22.00 | 3091 |
| VIP | Home Embroidery Image | . | M | 2.09.00 | 1705 |
| VIS | Visionary Image | . | M | 2.16.00 | 2473 |
| VIT | VITec Bitmap | . | M | 2.08.00 | 1682 |
| VIV | VivoActive Streaming Video | . | M | 2.17.00 | 1121 |
| VIVO | VivoActive Streaming Video | . | M | 2.17.00 | 1121 |
| VIX | ACUCOBOL-GT Index | . | M | 2.15.00 | 2391 |
| VJP | MS Visual J++ Project File | . | M | 2.07.00 | 1465 |
| VJSPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| VLB | Corel Ventura Library | . | L | 2.00.00 | 1122 |
| VLC | ACUCOBOL-GT License | . | M | 2.15.00 | 2348 |
| VMD | VMD 3D Image | . | M | 2.17.00 | 2566 |
| VMDK | VMware Virtual Disk Descriptor File | . | M | 2.10.00 | 1877 |
| VMDK | VMware Virtual Disk Image | . | M | 2.23.00 | 1878 |
| VMF | FaxWorks Audio File | . | L | 2.00.00 | 1123 |
| VMG | Nokia Saved SMS Message | . | M | 2.19.03 | 2839 |
| VMX | VMware Configuration File | . | M | 2.12.00 | 2112 |
| VOB | DVD MPEG2 Video Object File | . | H | 2.19.00 | 1212 |
| VOC | Creative Voice Sound | Y | M | 1.00.00 | 14 |
| VOR | Impress Presentation / Template | Y | H | 2.17.02 | 2540 |
| VOR | StarCalc Spreadsheet / Template | Y | H | 2.17.02 | 2607 |
| VOR | StarDraw Image / Template | Y | H | 2.17.02 | 2608 |
| VOR | StarWriter Document / Template | Y | H | 2.17.02 | 1052 |
| VORBIS | Vorbis Lossy Audio Codec Raw Audio | . | M | 2.17.00 | 2590 |
| VORT | VORT Raster Image | . | M | 2.08.00 | 1124 |
| VOX | VoxWare MetaVoice Encoded Audio | Y | H | 2.07.00 | 1125 |
| VP | Ventura Publisher Publication | . | L | 2.00.00 | 1126 |
| VP | VOCPACK Lossless Compressed Audio | . | M | 2.07.00 | 1526 |
| VP3 | 3D Stitch Editor Embroidery Image | . | M | 2.09.00 | 1706 |
| VPI | Virtual Pascal Unit | . | M | 2.17.00 | 2570 |
| VQE | Yamaha Sound-VQ Locator File | . | L | 2.00.00 | 1127 |
| VQF | Yamaha TwinVQF Music | . | M | 2.15.00 | 1128 |
| VQL | Yamaha Sound-VQ Locator File | . | L | 2.00.00 | 1127 |
| VRD | MS Visio Report Definition | . | H | 2.15.00 | 2393 |
| VRF | Oracle 7 Configuration File | . | M | 2.03.06 | 917 |
| VRML | Virtual Reality World (ASCII) | . | M | 2.17.00 | 412 |
| VSD | MS Visio 2 Document/Drawing/Shapes/Template | . | M | 2.19.00 | 1132 |
| VSD | MS Visio 3/4 Document/Drawing/Shapes/Template | Y | H | 2.19.00 | 1130 |
| VSDIR | MS Visual Studio Application Wizard | . | M | 2.13.00 | 2185 |
| VSDISCO | MS Visual Studio.NET DB Discovery | . | H | 2.15.00 | 1077 |
| VSK | MS Visual Studio Keyboard Template | . | M | 2.15.00 | 585 |
| VSL | GetRight Download List | . | L | 2.00.00 | 1131 |
| VSMACRO | MS Visual Studio Macro | . | H | 2.17.00 | 2197 |
| VSMACROS | MS Visual Studio Macro | . | H | 2.17.00 | 2197 |
| VSPROPS | MS Visual Studio Properties | . | H | 2.15.00 | 656 |
| VSPSCC | MS Visual Studio.NET Src Safe Code Cnt | . | M | 2.09.00 | 680 |
| VSS | MS Visio 2 Document/Drawing/Shapes/Template | . | M | 2.19.00 | 1132 |
| VSS | MS Visio 3/4 Document/Drawing/Shapes/Template | Y | H | 2.19.00 | 1130 |
| VST | MS Visio 2 Document/Drawing/Shapes/Template | . | M | 2.19.00 | 1132 |
| VST | MS Visio 3/4 Document/Drawing/Shapes/Template | Y | H | 2.19.00 | 1130 |
| VST | Targa Bitmap Image | Y | H | 2.19.00 | 19 |
| VST | Vista Graphic Image | . | M | 2.08.00 | 1684 |
| VSTEMPLATE | MS Visual Studio Project Template | . | M | 2.23.00 | 3310 |
| VSW | MS Visio Workspace File | . | L | 2.00.00 | 1133 |
| VSZ | MS Visual Studio Wizard Configuration | . | M | 2.13.00 | 2187 |
| VT | MS Visio 3/4 Document/Drawing/Shapes/Template | Y | H | 2.19.00 | 1130 |
| VVC | Infinity Game Engine Spell Casting FX | . | M | 2.10.00 | 1874 |
| VXD | MS Windows Driver (16 bit) | Y | H | 2.03.10 | 290 |
| VZ | VZ200/300 Image File | . | M | 2.12.00 | 2113 |
| W3D | Shockwave 3D Model | . | M | 2.14.00 | 611 |
| W3G | Warcraft III Recorded Game | . | M | 2.07.00 | 1510 |
| W3M | Warcraft III Game Map | . | M | 2.07.00 | 1511 |
| W3X | Warcraft III Game Map | . | M | 2.07.00 | 1511 |
| W3Z | Warcraft III Recorded Game | . | M | 2.07.00 | 1510 |
| W64 | Sonic Foundry VideoEditor Wave64 Audio | . | M | 2.07.00 | 1527 |
| WAB | MS Windows Address Book | . | M | 2.19.00 | 341 |
| WAD | Id Software Internal Data (Doom) | . | M | 1.00.00 | 282 |
| WAD | Id Software Internal Data 3.0 | . | M | 1.05.00 | 375 |
| WAD | Id Software Patch (Doom) | . | M | 1.00.00 | 322 |
| WADL | Web Application Description Language | Y | H | 2.16.00 | 2506 |
| WAL | Id Software Sprite (Quake 2) | . | M | 2.21.00 | 1134 |
| WAV | MS Windows Wave Sound (Intel) | Y | H | 2.06.00 | 166 |
| WAV | MS Windows Wave Sound (MacBinary) | . | M | 2.09.00 | 1737 |
| WAV | MS Windows Wave Sound (Motorola) | . | H | 2.17.00 | 2272 |
| WAV | Resource Interchange File Format | Y | H | 2.20.00 | 212 |
| WA~ | MS Windows Address Book | . | M | 2.19.00 | 341 |
| WB1 | QuattroPro Spreadsheet | . | M | 2.09.00 | 1135 |
| WB1 | WebShots Image | . | M | 2.12.00 | 2116 |
| WB2 | QuattroPro Spreadsheet | . | M | 2.09.00 | 1135 |
| WB3 | QuattroPro Spreadsheet | . | M | 2.09.00 | 1135 |
| WBK | MS Rich Text Format Document | Y | H | 2.15.00 | 269 |
| WBK | MS Rich Text Format Document (MacBinary) | . | M | 2.09.00 | 1756 |
| WBK | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| WBK | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| WBK | MS Write / Word Backup | Y | H | 2.17.00 | 1136 |
| WBL | Argo WebLoad II Upload File | . | L | 2.00.00 | 1137 |
| WBM | MS Windows Welcome Bitmap | . | M | 2.06.00 | 391 |
| WBMP | Wireless Bitmap | . | M | 2.15.00 | 525 |
| WBR | Crick Software WordBar File | . | L | 2.00.00 | 1138 |
| WBT | Crick Software WordBar Template | . | L | 2.00.00 | 1139 |
| WCD | MS Access Database/Template/Addition | . | M | 2.11.00 | 330 |
| WCM | WordPerfect Macro | Y | M | 2.22.00 | 158 |
| WDAT | WildTangent World Data | . | M | 2.21.00 | 3024 |
| WDB | MS Works Database (MacBinary) | . | M | 2.09.00 | 1740 |
| WDB | MS Works Database (OLE) | Y | H | 2.19.00 | 567 |
| WDB | MS Works Database 2 for Windows/DOS | . | M | 2.21.00 | 3005 |
| WDB | MS Works Database 3 for Windows | . | M | 2.21.00 | 3006 |
| WDB | MS Works Database Wizard | Y | H | 2.17.00 | 2392 |
| WDE | WINDEV Report | . | M | 2.12.00 | 2119 |
| WDF | Workshare DeltaView File | Y | H | 2.17.00 | 1255 |
| WDG | WINDEV Procedures' Set | . | M | 2.12.00 | 2120 |
| WDI | WINDEV Component Description | . | M | 2.12.00 | 2121 |
| WDP | WINDEV Project | . | M | 2.12.00 | 2122 |
| WDP | Windows Media (HD) Photo | . | M | 2.21.00 | 2919 |
| WDR | Psion Series 3/3a Printer Driver | . | M | 2.12.00 | 2114 |
| WDW | WINDEV Window | . | M | 2.12.00 | 2123 |
| WDY | WINDEV Run-Time Template | . | M | 2.12.00 | 2124 |
| WDZ | WINDEV Compressed Archive | . | M | 2.08.00 | 1644 |
| WEB | BlackWidow Website Description | . | M | 2.12.00 | 2115 |
| WEB | Xara Web Document | . | M | 2.12.00 | 1141 |
| WEBINFO | MS Visual Studio.NET Web Information | . | M | 2.09.00 | 1174 |
| WEBPROJ | MS Visual Studio.NET Project | . | M | 2.23.00 | 552 |
| WED | Infinity Game Engine Display Info | . | M | 2.10.00 | 1875 |
| WEM | Video Email | . | M | 2.12.00 | 2094 |
| WFA | Fractal Image and Sequence Codec Image | . | M | 2.14.00 | 2277 |
| WFB | Turtle Beach WaveFront Bank | . | L | 2.00.00 | 1142 |
| WFD | Turtle Beach WaveFront Drum Set | . | L | 2.00.00 | 1143 |
| WFN | Corel Draw Font/Symbols | . | M | 1.00.00 | 37 |
| WFP | Turtle Beach WaveFront Program | . | L | 2.00.00 | 1144 |
| WI | Corel Compressed Image | . | M | 2.07.00 | 1406 |
| WIC | J Wavelet Image Codec Bitmap | . | M | 2.08.00 | 1685 |
| WID | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| WIDGET | Yahoo! Widget | . | M | 2.15.00 | 2341 |
| WIF | CaseMaker AcuBench Workspace Info. | . | M | 2.15.00 | 2350 |
| WIL | WinImage file | . | M | 2.06.00 | 798 |
| WIM | MS Windows Installer Package / Wizard | Y | H | 2.17.00 | 1211 |
| WIN | Geometric Description Language Image | . | M | 2.16.00 | 517 |
| WIN | MS Windows Live Contacts | . | M | 2.21.00 | 3020 |
| WIZ | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| WIZ | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| WIZ | MS Word/Publisher Wizard | . | L | 2.00.00 | 1147 |
| WJP | WildTangent Compressed JPEG Image | . | M | 2.15.00 | 518 |
| WJP | WildTangent Compressed PNG Image | . | M | 2.15.00 | 604 |
| WK1 | Lotus 123 Ver. 1 & 2 Worksheet | . | M | 1.00.00 | 104 |
| WK1 | Lotus 123 Worksheet (MacBinary) | . | M | 2.16.00 | 2483 |
| WK3 | Lotus 123 Ver. 3 & 4 Worksheet | . | M | 2.07.00 | 105 |
| WK3 | Lotus 123 Worksheet (MacBinary) | . | M | 2.16.00 | 2483 |
| WK4 | Lotus 123 Ver. 3 & 4 Worksheet | . | M | 2.07.00 | 105 |
| WK4 | Lotus 123 Worksheet (MacBinary) | . | M | 2.16.00 | 2483 |
| WKB | WordPerfect Document | Y | M | 2.22.00 | 157 |
| WKB | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| WKS | DeskMate Worksheet | . | M | 2.21.00 | 2927 |
| WKS | Lotus 123 Ver. 1 Worksheet | . | M | 1.00.00 | 106 |
| WKS | MS Works Spreadsheet (MacBinary) | . | M | 2.09.00 | 1741 |
| WKS | MS Works Spreadsheet 2 for Windows/DOS | . | M | 2.21.00 | 3007 |
| WKS | MS Works Spreadsheet for DOS | . | M | 2.21.00 | 2125 |
| WKZ | Wingz Spreadsheet | . | M | 2.23.00 | 3256 |
| WLD | Adobe Language Database | . | M | 2.13.00 | 433 |
| WLD | WorldBuilder Scene | . | M | 2.17.00 | 2567 |
| WLF | Argo WebLoad I Upload File | . | L | 2.00.00 | 1148 |
| WLL | MS Word Add-In | . | L | 2.00.00 | 1149 |
| WLM | CompW Bitmap | . | M | 2.08.00 | 1686 |
| WLR | MS Works Spreadsheet (OLE) | Y | H | 2.18.00 | 2625 |
| WM | Working Model Motion Simulation | . | M | 2.19.03 | 2838 |
| WMA | MS Windows Media Active Streaming File | . | H | 2.19.00 | 1259 |
| WMDB | MS Windows Media Catalog Database | . | M | 2.18.00 | 2723 |
| WMDB | MS Windows Media Compressed Database | . | M | 2.18.00 | 2722 |
| WMDB | MS Windows Media Database | . | M | 2.06.00 | 1319 |
| WMF | MS Windows Enhanced Metafile | . | M | 2.07.00 | 702 |
| WMF | MS Windows MetaFile (placeable) | . | M | 2.19.00 | 230 |
| WML | Wireless Markup Language | . | H | 2.19.00 | 2730 |
| WMP | Infinity Game Engine World Map | . | M | 2.10.00 | 1876 |
| WMV | MS Windows Media Active Streaming File | . | H | 2.19.00 | 1259 |
| WMZ | PK Zip Archive | Y | M | 2.03.09 | 12 |
| WMZ | PK Zip Archive (Encrypted) | Y | H | 2.23.00 | 3176 |
| WN | Amiga Wanton Packer Song/Module | . | M | 2.12.00 | 2126 |
| WOR | MapInfo Workspace | . | M | 2.12.00 | 2127 |
| WOR | ProWrite Document | Y | H | 1.00.00 | 228 |
| WOW | Future Composer Music Module | . | M | 2.21.00 | 1150 |
| WP | MS Works for Mac 3 Document | . | M | 2.19.00 | 2758 |
| WP | WordPerfect Document | Y | M | 2.22.00 | 157 |
| WP | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| WP# | WordPerfect Document | Y | M | 2.22.00 | 157 |
| WP# | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| WP2 | MS Works for Mac 2 Document | . | M | 2.19.00 | 2759 |
| WP4 | MS Works for Mac 4 Database/Doc/Sheet (OLE) | Y | H | 2.19.00 | 2757 |
| WP? | WordPerfect Support File | Y | M | 2.19.00 | 163 |
| WPD | MS Windows Printer Driver | . | M | 1.00.00 | 253 |
| WPD | WordPerfect Document | Y | M | 2.22.00 | 157 |
| WPD | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| WPF | Enable Wordprocessor Document | . | M | 2.19.00 | 1151 |
| WPG | WildTangent Compressed PNG Image | . | M | 2.15.00 | 604 |
| WPG | WordPerfect Graphic Image | Y | M | 2.22.00 | 160 |
| WPL | MS Windows Media Player Playlist | . | M | 2.19.03 | 2841 |
| WPL | Windows Media Player Play List | . | M | 2.03.06 | 466 |
| WPM | WordPerfect Macro | Y | M | 2.22.00 | 158 |
| WPS | MS Works Document (MacBinary) | . | M | 2.09.00 | 1742 |
| WPS | MS Works for DOS Document | Y | H | 2.19.00 | 134 |
| WPS | MS Works for Windows 3 Document (OLE) | Y | H | 2.19.00 | 2624 |
| WPT | Waypoint GPS Locations Map | . | M | 2.12.00 | 2128 |
| WPT | WordPerfect Document | Y | M | 2.22.00 | 157 |
| WPT | WordPerfect Document (MacBinary) | . | M | 2.16.00 | 1738 |
| WPW | Novel PerfectWorks Document | . | L | 2.00.00 | 1152 |
| WPX | WordPerfect Document Template | Y | H | 2.17.00 | 1360 |
| WQ1 | QuattroPro for DOS Spreadsheet | . | L | 2.00.00 | 1153 |
| WQ2 | QuattroPro for DOS Spreadsheet | . | L | 2.00.00 | 1153 |
| WR1 | Lotus Symphony Spreedsheet | . | L | 2.00.00 | 1154 |
| WRA | WRAptor Compressed Archive (C64) | . | M | 2.08.00 | 1590 |
| WRD | Psion Series 3 Word Document | . | M | 2.11.00 | 912 |
| WRF | WebEx Recording | . | M | 2.19.03 | 2840 |
| WRI | MS Rich Text Format Document | Y | H | 2.15.00 | 269 |
| WRI | MS Rich Text Format Document (MacBinary) | . | M | 2.09.00 | 1756 |
| WRI | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| WRI | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| WRI | MS Write / Word Backup | Y | H | 2.17.00 | 1136 |
| WRI | MS Write Document | Y | H | 1.00.00 | 215 |
| WRK | Cakewalk Music Audio Project | . | M | 2.17.00 | 1155 |
| WRK | Lotus Symphony Spreedsheet | . | L | 2.00.00 | 1154 |
| WRK | Symphony / Lotus 123 Worksheet | . | M | 1.00.00 | 107 |
| WRL | Virtual Reality World (ASCII) | . | M | 2.17.00 | 412 |
| WRL | Virtual Reality World (Binary) | . | M | 1.05.00 | 413 |
| WRML | Virtual Reality World (ASCII) | . | M | 2.17.00 | 412 |
| WRZ | Virtual Reality World (ASCII) | . | M | 2.17.00 | 412 |
| WRZ | Virtual Reality World (Binary) | . | M | 1.05.00 | 413 |
| WS1 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS2 | WordStar 2000 Document | . | M | 2.19.00 | 2748 |
| WS2 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS3 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS4 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS5 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS6 | WordStar Document | Y | H | 2.19.00 | 458 |
| WS7 | WordStar Document | Y | H | 2.19.00 | 458 |
| WSAD | WildTangent Compressed Game Data | . | M | 2.15.00 | 2402 |
| WSB | MS Works Portfolio | . | H | 2.17.00 | 1140 |
| WSBM | WildTangent Compressed Game Data | . | M | 2.15.00 | 2402 |
| WSD | WordStar for Windows | Y | H | 2.12.00 | 465 |
| WSDL | Web Service Description Language | . | H | 2.15.00 | 2186 |
| WSF | MS Windows Script File | . | H | 2.15.00 | 2192 |
| WSGO | WildTangent Compressed Game Data | . | M | 2.15.00 | 2402 |
| WSMO | WildTangent Compressed Game Data | . | M | 2.15.00 | 2402 |
| WTCFG | WildTangent Game Data | . | M | 2.15.00 | 899 |
| WV | WavPack Lossless Compressed Audio | Y | H | 2.16.00 | 1528 |
| WVE | Symbian 3a/3c/3mx Waveform Sound | . | M | 2.07.00 | 1529 |
| WVL | Wavelet Scalar Quantization Image | . | M | 2.21.00 | 1156 |
| WWD | MS Works Database Wizard | Y | H | 2.17.00 | 2392 |
| WWL | MS Word Add-In | . | L | 2.00.00 | 1149 |
| WWP | MS Works for DOS Document | Y | H | 2.19.00 | 134 |
| WWP | MS Works for Windows 3 Document (OLE) | Y | H | 2.19.00 | 2624 |
| WWS | MS Excel Worksheet/Add-In/Template (OLE) | Y | H | 2.22.00 | 111 |
| WWV | WildTangent Compressed Wave Sound | . | M | 2.15.00 | 895 |
| WZS | MS Word for Windows Document (OLE) | Y | H | 2.19.00 | 229 |
| WZS | MS Word for Windows Document (pre-OLE) | Y | M | 2.19.00 | 2738 |
| X | Direct3D Object (Binary) | . | M | 2.06.00 | 1243 |
| X | Direct3D Object (Binary) Compressed | . | M | 2.17.00 | 2531 |
| X | Direct3D Object (Text) | . | M | 2.17.00 | 2529 |
| X | Direct3D Object (Text) Compressed | . | M | 2.17.00 | 2530 |
| X1 | X1 Archive | . | M | 2.22.00 | 3059 |
| X11 | X Windows System Dump Image | Y | M | 2.18.00 | 218 |
| X16 | Macromedia Extra Program Extension | . | L | 2.00.00 | 1157 |
| X16 | QuickTime Xtra Plug-in | . | M | 2.05.00 | 1266 |
| X32 | Macromedia Extra Program Extension | . | L | 2.00.00 | 1157 |
| X32 | QuickTime Xtra Plug-in | . | M | 2.05.00 | 1266 |
| X3D | Extensible 3D Model | . | H | 2.23.00 | 3195 |
| X3F | Sigma Camera RAW Picture Image | . | M | 2.19.04 | 2844 |
| X64 | Commodore 64 Emulator Disk Image | . | M | 2.08.00 | 1589 |
| XA | Sims Extensive Audio, The | . | M | 2.07.00 | 1538 |
| XAR | eXtensible ARchiver Archive | . | M | 2.15.00 | 684 |
| XAR | Xara X Vector Drawing | . | M | 2.15.00 | 1159 |
| XARC | Longest Journey, The Sound | . | M | 2.09.00 | 1712 |
| XBE | MS XBox Program | . | M | 2.11.00 | 1973 |
| XBM | X11 BitMap | . | H | 1.05.00 | 179 |
| XCF | GIMP Image | Y | M | 2.23.00 | 1859 |
| XCR | Warlords Battlecry Archive | . | M | 2.08.00 | 1645 |
| xdb | McAfee Firewall Log/Database | . | M | 2.07.00 | 1382 |
| XDC | Acrobat XML Data Package File | Y | H | 2.16.00 | 2458 |
| XDP | Acrobat XML Data Package File | Y | H | 2.16.00 | 2458 |
| XEX | MS XBox 360 Program | . | M | 2.11.00 | 1972 |
| XGL | XGL 3D Model | . | M | 2.14.00 | 2294 |
| XGn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| XHT | HTML + XML Namespace | . | H | 2.16.00 | 488 |
| XHTML | HTML + XML Namespace | . | H | 2.16.00 | 488 |
| XI | FastTracker 2 Instrument Sample | . | M | 2.14.00 | 1160 |
| XIE | Direct3D Object (Binary) | . | M | 2.06.00 | 1243 |
| XIE | Direct3D Object (Binary) Compressed | . | M | 2.17.00 | 2531 |
| XIE | Direct3D Object (Text) | . | M | 2.17.00 | 2529 |
| XIE | Direct3D Object (Text) Compressed | . | M | 2.17.00 | 2530 |
| XIF | Wang Imaging File | . | L | 2.00.00 | 1161 |
| XIM | X11 Xim Toolkit File | . | L | 2.00.00 | 1162 |
| XLA | MS Excel Worksheet/Add-In/Template (OLE) | Y | H | 2.22.00 | 111 |
| XLAM | MS Excel Spreadsheet (Open XML) | Y | H | 2.21.00 | 2209 |
| XLB | MS Excel Worksheet/Add-In/Template (OLE) | Y | H | 2.22.00 | 111 |
| XLC | MS Excel Chart | Y | H | 2.19.00 | 109 |
| XLM | MS Excel Macro | Y | H | 2.19.00 | 110 |
| XLO | AutoDesk Inventor Export Journal | . | M | 2.07.00 | 1512 |
| XLS | MS Compound Document (OLE) | Y | H | 2.17.00 | 274 |
| XLS | MS Excel Spreadsheet (MacBinary) | . | M | 2.09.00 | 1766 |
| XLS | MS Excel Spreadsheet (XML) | Y | H | 2.22.00 | 1248 |
| XLS | MS Excel Worksheet/Add-In/Template (OLE) | Y | H | 2.22.00 | 111 |
| XLSB | MS Excel Spreadsheet (Open XML,Binary) | Y | H | 2.21.00 | 2626 |
| XLSM | MS Excel Spreadsheet (Open XML) | Y | H | 2.21.00 | 2209 |
| XLSM | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| XLSX | MS Excel Spreadsheet (Open XML) | Y | H | 2.21.00 | 2209 |
| XLSX | MS Office Data (Open XML) | Y | H | 2.21.00 | 2207 |
| XLT | Lotus 123 File | . | M | 1.00.00 | 102 |
| XLT | MS Excel Worksheet/Add-In/Template (OLE) | Y | H | 2.22.00 | 111 |
| XLTX | MS Excel Spreadsheet (Open XML) | Y | H | 2.21.00 | 2209 |
| XLW | MS Excel Workspace/Workbook | Y | H | 2.19.00 | 195 |
| XM | FastTracker 2 Extended Music Module | . | M | 2.14.00 | 1163 |
| XMCD | Xmcd CD Information | . | M | 2.16.00 | 2430 |
| XML | Exten. Metadata Platform Sidecar (XML) | Y | H | 2.14.00 | 2338 |
| XML | EXtensible Markup Language | Y | H | 2.17.01 | 342 |
| XML | EXtensible Markup Language (MacBinary) | . | M | 2.09.00 | 1772 |
| XML | EXtensible Markup Language (UTF-16BE) | . | M | 2.14.00 | 2329 |
| XML | EXtensible Markup Language (UTF-16LE) | . | M | 2.14.00 | 2330 |
| XML | EXtensible Markup Language (UTF-32BE) | . | M | 2.14.00 | 2327 |
| XML | EXtensible Markup Language (UTF-32LE) | . | M | 2.14.00 | 2328 |
| XML | EXtensible Markup Language (UTF-8) | . | M | 2.14.00 | 2331 |
| XML | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| XML | HyperText Markup Language | Y | H | 2.23.00 | 315 |
| XML | HyperText Markup Language (UTF-16BE) | . | M | 2.19.03 | 2829 |
| XML | HyperText Markup Language (UTF-16LE) | . | M | 2.19.03 | 2830 |
| XML | HyperText Markup Language (UTF-32BE) | . | M | 2.19.03 | 2827 |
| XML | HyperText Markup Language (UTF-32LE) | . | M | 2.19.03 | 2828 |
| XML | HyperText Markup Language (UTF-8) | . | M | 2.19.03 | 2831 |
| XML | MS Excel Spreadsheet (XML) | Y | H | 2.22.00 | 1248 |
| XML | MS InfoPath Document (XML) | Y | H | 2.19.04 | 2843 |
| XML | MS Office Document (XML) | Y | H | 2.03.07 | 1247 |
| XML | MS PowerPoint Slides (XML) | Y | H | 2.09.00 | 718 |
| XML | MS Word Document (XML) | Y | H | 2.03.07 | 1249 |
| XML | Portable Application Description (XML) | Y | H | 2.14.00 | 2337 |
| XML | SGML Document Type Definition | . | H | 2.23.00 | 686 |
| xml | XML Based Filtering Format | Y | H | 2.16.00 | 2455 |
| XML | XML Encryption | . | H | 2.16.00 | 2507 |
| XML | XML Schema | . | H | 2.23.00 | 2132 |
| XML | XSL Formatting Objects Form | . | H | 2.20.00 | 2861 |
| XMP | Exten. Metadata Platform Sidecar (XML) | Y | H | 2.14.00 | 2338 |
| XNK | MS Exchange Shortcut/Link | . | M | 2.22.00 | 1164 |
| Xnn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| XOP | XML-binary Optimized Packaging | . | H | 2.16.00 | 490 |
| XOS | Xaos Tools Bitmap Image | . | L | 2.00.00 | 1165 |
| XPA | XPack Archive | . | M | 2.22.00 | 3083 |
| XPF | X-Protector Project | . | M | 2.12.00 | 2129 |
| XPF | XaoS Position File | . | M | 2.12.00 | 2130 |
| XPI | Mozilla Browser Extension Package | . | H | 2.16.03 | 2511 |
| XPM | X11 Pixmap Image | . | M | 2.22.00 | 1166 |
| XPR | MS Expression 3 Graphic Image | . | M | 2.12.00 | 2131 |
| XPS | XML Paper Specification Document (Open XML) | Y | H | 2.21.00 | 2148 |
| XPT | XPCOM Type Library | . | M | 2.06.00 | 1320 |
| XR1 | Xargon Game Data | . | L | 2.00.00 | 1167 |
| XSD | XML Schema | . | H | 2.23.00 | 2132 |
| XSI | Softimage XSI 3D Model | . | M | 2.12.00 | 2133 |
| XSL | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| XSLT | EXtensible Style Language | Y | H | 2.15.00 | 570 |
| XSN | MS InfoPath Dynamic Form/Template | . | H | 2.19.04 | 2842 |
| XSS | MS Groove System Store | . | M | 2.21.00 | 3019 |
| XSSLOG | MS Groove System Store Log | . | M | 2.21.00 | 3021 |
| XSSR | MS Groove System Store | . | M | 2.21.00 | 3019 |
| XST | Xerox Scanner Template | . | M | 2.11.00 | 2090 |
| XTP | XTree Data File | . | L | 2.00.00 | 1168 |
| XV | Khoros Visualization Image | Y | M | 2.15.00 | 1119 |
| XWD | X Windows System Dump Image | Y | M | 2.18.00 | 218 |
| XWF | Yamaha XG Works MIDI File | . | L | 2.00.00 | 1169 |
| XWP | Cross Talk for Windows PhoneBook | . | M | 1.00.00 | 43 |
| XYZ | RPG Maker Graphic Image | . | M | 2.08.00 | 1687 |
| Y | Subsampled Raw YUV Bitmap | . | L | 2.00.00 | 1170 |
| YAL | Arts & Letters Clipart Library | . | L | 2.00.00 | 1171 |
| YAODL | YAODL 3D Scene | . | M | 2.12.00 | 809 |
| YBS | YBS Archive | . | M | 2.22.00 | 1172 |
| YC | YAC Compressed Archive | . | M | 2.08.00 | 1646 |
| YCC | Kodak YCC Printer Image | . | M | 2.12.00 | 788 |
| YDL | YAODL 3D Scene | . | M | 2.12.00 | 809 |
| YGn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| YM | Atari ST YM2149 Module/Song | . | M | 2.07.00 | 1514 |
| YNC | yEnc Encoded File | . | M | 2.07.00 | 1513 |
| Ynn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| YUVN | IFF YUV Image | Y | H | 2.18.00 | 2643 |
| Z | Gzip Unix Archive | . | M | 2.22.00 | 44 |
| Z | InstallShield 3.x Archive | . | M | 2.15.00 | 334 |
| Z | Quasijarus Strong Compressed Archive | . | M | 2.22.00 | 3121 |
| Z | Tape Archive (Compressed with Gzip) | . | M | 2.07.00 | 1088 |
| ZABW | AbiWord Compressed Document | . | M | 2.22.00 | 1515 |
| ZBD | ZoomBrowser Database | . | M | 2.06.00 | 1321 |
| ZBR | Zebra Metafile | . | M | 2.22.00 | 3043 |
| ZGn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| ZGT | Oren Scientific Wordprocessor Document | . | M | 2.12.00 | 2134 |
| ZINC | Zinc Interface Library Icon | . | L | 2.00.00 | 1175 |
| ZIP | Absolute Packager Self Extracting Archive | . | M | 2.10.01 | 1971 |
| ZIP | Java Archive | Y | M | 2.12.01 | 1432 |
| ZIP | PK Zip Archive | Y | M | 2.03.09 | 12 |
| ZIP | PK Zip Archive (Encrypted) | Y | H | 2.23.00 | 3176 |
| ZIP | PK Zip Archive (MacBinary) | . | M | 2.09.00 | 1735 |
| ZIP | PK Zip Self Extracting Archive | Y | M | 1.00.00 | 283 |
| ZIP | WinZip Archive (Encrypted) | Y | H | 2.23.00 | 3177 |
| ZIP | WinZip Self Extracting Archive | . | M | 2.09.02 | 584 |
| ZIX | WinZix Compressed Archive | . | M | 2.19.04 | 2845 |
| ZMC | Zinio Media Database | . | M | 2.13.00 | 2167 |
| ZMF | Draw Native Drawing (Compress+Preview) | . | H | 2.12.00 | 2137 |
| ZMF | Draw Native Drawing File | . | M | 2.12.00 | 2135 |
| ZNA | Zinio Electronic Magazine Annotations | . | M | 2.07.00 | 1416 |
| Znn | Borland Paradox Index | . | M | 2.21.00 | 568 |
| ZNO | Zinio Electronic Magazine | . | M | 2.05.00 | 1261 |
| ZOO | Zoo Compressed Archive | . | M | 2.16.00 | 56 |
| ZOO | Zoo Tycoon Game File | . | M | 2.11.00 | 2017 |
| ZOT | Zoot Database | . | M | 2.12.00 | 2136 |
| ZPK | ZPack Archive | . | M | 2.22.00 | 3062 |
| ZVD | ZyXEL Voice Audio | . | M | 2.08.00 | 1702 |
| ZYX | ZyXEL Voice Audio | . | M | 2.08.00 | 1702 |
| ZZ | Zzip Compressed Archive | . | M | 2.22.00 | 2846 |