| Description |
File Extensions |
M |
A |
Modified |
Index |
| 1944: Battle of the Bulge Game Archive | FX | . | M | 2.15.00 | 2371 |
| 3D Environment | RUN | . | M | 1.00.00 | 244 |
| 3D Frogger Game Data | MWD | . | M | 2.15.00 | 749 |
| 3D Home Architect Delux Floor Plans | PL0, PL1, PL2, PLn, PBn, PAn | . | M | 2.14.00 | 2227 |
| 3D Mark Database | 3DB | . | M | 2.15.00 | 2342 |
| 3D Movie Maker Movie | 3MM | . | M | 2.17.00 | 2519 |
| 3D Polygon Models Format | POL | . | M | 2.11.00 | 1991 |
| 3D Stitch Editor Embroidery Image | VP3 | . | M | 2.09.00 | 1706 |
| 3D Studio 3.0 Image | 3DS | . | M | 2.17.00 | 2525 |
| 3D Studio Image (ASCII) | ASC | . | M | 2.17.00 | 2526 |
| 3D Studio Max Model Export (ASCII) | ASE | . | M | 2.14.00 | 587 |
| 3D Ultra Mini Golf Game Archive | RBX | . | M | 2.15.00 | 1071 |
| 3D Ultra Pinball Game Archive | TBV | . | M | 2.15.00 | 1039 |
| 3D-XplorMath Image | SURF | . | M | 2.17.00 | 2564 |
| 3DX Image | 3DX | . | M | 2.18.00 | 2620 |
| 3GPP Multimedia File | 3GP, 3GG, 3G2, 3GPP, 3GPP2 | . | M | 2.17.00 | 2096 |
| 3GPP Multimedia File (MacBinary) | 3GP, 3GPP, 3GPP2 | . | M | 2.16.00 | 2097 |
| 4D Creative Model (ASCII) | HRC | . | M | 2.14.00 | 2288 |
| 4th Dimension Database Structure | 4DB | . | M | 2.15.00 | 2344 |
| 4X Movie Format | 4XM | . | H | 2.12.00 | 2098 |
| 64LAN Image | L64 | . | M | 2.10.00 | 1888 |
| 7-Zip Archive | 7Z, LZMA | . | M | 2.07.00 | 1519 |
| a-Pac Compressed Audio | APC | . | M | 2.08.00 | 1695 |
| A.M.Composer Music | AMC | . | M | 2.20.00 | 2862 |
| AAC MPEG-4 Audio | MP4, MPG4 | . | M | 2.07.00 | 1534 |
| ABC Music Language Song | ABC | . | M | 2.16.00 | 520 |
| ABComp Archive | ABP | . | M | 2.14.00 | 2296 |
| ABIF Applied Biosystems Inc. Format | AB1, FSA | . | M | 2.15.00 | 2346 |
| AbiWord Compressed Document | ZABW, GZ | . | M | 2.07.00 | 1515 |
| AbiWord Document | ABW | . | M | 2.07.00 | 1516 |
| Absolute Database | ABS | . | M | 2.19.04 | 2688 |
| Absolute Packager Self Extracting Archive | EXE, ZIP | . | M | 2.10.01 | 1971 |
| Absolute Terror Game Archive | PAK | . | M | 2.15.00 | 524 |
| Abyss's Highest Experience Music | AHX | . | M | 2.17.00 | 534 |
| AC-3 / Dolby Digital Audio | AC3, EAC3 | . | M | 2.16.00 | 2418 |
| Ac3d 3D Model | AC | . | M | 2.14.00 | 2283 |
| ACCEL / Protel Printed Circuit Board | PCB | . | M | 2.13.00 | 2168 |
| Ace Archive | ACE | . | M | 2.08.00 | 481 |
| Ace Ventura Game Archive | BIN | . | M | 2.15.00 | 487 |
| AceText Collection | ATC | . | M | 2.16.00 | 2457 |
| ACIS 3D Model | SAT | . | M | 2.17.00 | 2563 |
| Acrobat XML Data Package File | XDP | Y | H | 2.16.00 | 2458 |
| Acronis TrueImage Disk Image | TIB | . | M | 2.19.03 | 2835 |
| ACT Lossless Compressed Audio | MKW | . | M | 2.07.00 | 1533 |
| Act Of War Game Archive | DAT | . | M | 2.15.00 | 489 |
| ACT! 2.0 Document | LBR | . | M | 1.00.00 | 205 |
| ACT! 2.0 Report | RPN, RPC | . | M | 1.00.00 | 208 |
| Active Server Page | ASP | . | M | 2.03.06 | 447 |
| Active Template Library Control | CTL | . | M | 2.00.00 | 1228 |
| Active Template Library Template | CPP, H, IDL | . | M | 2.00.00 | 1227 |
| Active Tutor Data | ARF | . | M | 2.18.00 | 2704 |
| ActiveMime Object | MSO | . | M | 2.17.00 | 583 |
| ACUCOBOL-GT Index | VIX | . | M | 2.15.00 | 2391 |
| ACUCOBOL-GT Intermediate Object File | ACU | . | M | 2.16.00 | 2349 |
| ACUCOBOL-GT License | ALC, VLC | . | M | 2.15.00 | 2348 |
| Ad-Aware Signature | REF | . | M | 2.15.00 | 514 |
| Ad-Lib Composer Music | ROL | Y | H | 1.00.00 | 23 |
| Ad-Lib Instrument Bank | BNK | Y | M | 1.00.00 | 224 |
| Adaptive Multi-Rate Audio | AMR | . | M | 2.16.00 | 1694 |
| Adaptive Multi-Rate Wideband Audio | AWB | . | M | 2.20.00 | 2377 |
| Adaptive Prediction Tree Encoded Image | APT | . | M | 2.15.00 | 1979 |
| Addict Spell Check Dictionary | DCT | . | M | 2.06.00 | 1311 |
| Addict Spell Check Dictionary (Compile | ADM | . | M | 2.11.00 | 2089 |
| AddWeb Temporary Data | TMP | . | M | 2.10.00 | 1955 |
| AddWeb Update | UPDATE, ADB | . | M | 2.06.00 | 1317 |
| ADEX ChromaGraph Image | ADEX, IMG, RLE | Y | M | 2.15.00 | 178 |
| Adobe Acrobat Cache Index | IDX | . | M | 2.11.00 | 2083 |
| Adobe Acrobat Capture Index | NDX | . | M | 2.00.00 | 1221 |
| Adobe Acrobat Forms Data Format | FDF | . | M | 2.19.00 | 2805 |
| Adobe Acrobat Installer Support File | ITW | . | M | 2.10.00 | 1943 |
| Adobe Acrobat Linguistics Index | CLX | . | M | 2.12.00 | 1280 |
| Adobe Acrobat Plug-In | STC | . | M | 2.07.00 | 1400 |
| Adobe Acrobat Resource CMap | . | . | M | 2.06.00 | 1352 |
| Adobe Acrobat Spelling Lexicon (Dict.) | LEX | . | M | 2.13.00 | 1338 |
| Adobe Color Profile List | LST | . | M | 2.15.00 | 1964 |
| Adobe Composite Font Metrics | AFM | . | M | 2.17.00 | 2598 |
| Adobe Download Manager Online Shortcut | AOM | . | M | 2.15.00 | 2364 |
| Adobe Flash Project | FLP | . | M | 2.19.00 | 2802 |
| Adobe Font List | LST | . | M | 2.03.06 | 625 |
| Adobe Font Metrics (DESQview) | AFM | . | M | 2.03.06 | 249 |
| Adobe Illustrator Drawing | AI | Y | H | 2.19.00 | 441 |
| Adobe Illustrator Drawing (MacBinary) | AI | . | M | 2.09.00 | 1777 |
| Adobe InDesign Document | INDD | . | M | 2.19.02 | 2809 |
| Adobe Language Database | RSD, SYD, DID, DDD, WLD, PDD | . | M | 2.13.00 | 433 |
| Adobe Linguistics File | HYP, ENV | . | M | 2.12.05 | 468 |
| Adobe Master Font Metrics | AFM | . | M | 2.14.00 | 2246 |
| Adobe PhotoShop Image | PSD, PDD | Y | M | 2.14.00 | 400 |
| Adobe PhotoShop Image (MacBinary) | PSD, PDD | . | M | 2.16.00 | 1739 |
| Adobe PhotoShop Pattern | PAT | . | M | 2.06.00 | 1365 |
| Adobe Photoshop Plug-in | 8BI, AXT | . | M | 2.19.00 | 2779 |
| Adobe Portable Document (MacBinary) | PDF | Y | H | 2.20.02 | 1331 |
| Adobe Portable Document Format | PDF | Y | H | 2.20.02 | 258 |
| Adobe PostScript Document | PS, AI | Y | H | 2.19.02 | 301 |
| Adobe PostScript Document (PJL) | PS, PLT | Y | H | 2.06.03 | 410 |
| Adobe PostScript Font (Binary) | PFB, PFA | . | M | 2.14.00 | 340 |
| Adobe PostScript Font (MacBinary) | PFB | . | M | 2.09.00 | 705 |
| Adobe Printer Font Metrics | PFM, MMM | . | M | 2.18.00 | 358 |
| Adobe Remote Patch Update | RTP | . | M | 2.18.00 | 2091 |
| Advanced Audio Coding ADIF Sound | AAC | . | M | 2.16.00 | 454 |
| Advanced Audio Coding ADTS Sound | AAC | . | M | 2.16.00 | 2419 |
| Advanced Digital Audio Compressed | ADA | . | M | 2.08.00 | 1692 |
| Advanced Forensic Format Disk Image | AFF | . | M | 2.18.00 | 2695 |
| Advanced Image Coding Image | AIC | . | M | 2.07.00 | 1540 |
| Advanced Visualizer 3D Object (ASCII) | OBJ | . | M | 2.17.00 | 1158 |
| Advantage Database Server Database | ADT | . | M | 2.18.00 | 2692 |
| Adventure SOS Compiled Adventure Game | SOS | . | M | 2.11.00 | 2039 |
| Aegis Animation | . | Y | H | 2.18.00 | 2325 |
| Aegisub Advanced SubStation Alpha Subtitle | ASS, SSA | . | M | 2.18.00 | 2707 |
| Aegisub Advanced SubStation Alpha Subtitle (Unicode) | ASS, SSA | . | M | 2.20.00 | 2867 |
| Affix File | AFF | . | M | 2.19.04 | 2855 |
| AGEMA File | AFF | . | M | 2.19.04 | 2856 |
| Ai Archiver Archive | AI | . | M | 2.07.00 | 1520 |
| AIN Archiver File | AIN | . | M | 2.07.00 | 427 |
| AIX Small Indexed Archive (32-bit) | AR | . | M | 2.18.00 | 1563 |
| AIX Small Indexed Archive (32/64-bit) | AR | . | M | 2.18.00 | 1564 |
| Akai S5000/S6000 MIDI Keyboard Sample | AKP | . | H | 2.18.00 | 2623 |
| Aksharamala Binary Keymap | AKM | . | M | 2.19.04 | 2859 |
| AKT Archive | AKT | . | M | 2.15.00 | 2297 |
| Aladdin Systems File Component | PFC | . | L | 2.00.00 | 940 |
| Aladdin Systems Private File | PF | . | L | 2.00.00 | 939 |
| AlbumWrap Music Archive | MP3 | Y | H | 2.19.00 | 1561 |
| Alchemy 2000 Molecule | AL2 | . | M | 2.17.00 | 2528 |
| Alchemy Molecule | ALC | . | M | 2.17.00 | 2527 |
| Aley's Module | ALM | . | M | 2.19.04 | 2860 |
| Alias Wavefront Movie | MV | . | M | 2.17.00 | 2600 |
| Alias Wavefront Raster Image | RLA, RLB | . | M | 2.08.00 | 1014 |
| AliceSoft PMS Bitmap Image | PMS | . | M | 2.08.00 | 1670 |
| Allegro Compressed Packfile | DAT | . | M | 2.21.00 | 2996 |
| Allegro Generic Data | DAT | . | M | 2.07.00 | 1456 |
| Allegro Uncompressed Packfile | DAT | . | M | 2.21.00 | 2997 |
| Alpha Microsystems Bitmap | BMP | Y | M | 1.00.00 | 175 |
| Altair Binary Format | ABF | . | M | 2.19.04 | 2850 |
| Alternative Web Language | AWL | . | M | 2.18.00 | 2715 |
| ALZip Compressed Archive | ALZ | . | M | 2.08.00 | 1562 |
| Amapi 3D Model | A3D | . | M | 2.07.00 | 1477 |
| Amateur Data Interchange Format (ADIF) | ADI, ADIF | . | M | 2.15.00 | 576 |
| America Online Address Book | ABY | . | M | 2.06.00 | 1270 |
| America Online Address Book Index | ABI | . | M | 2.06.00 | 1269 |
| America Online Buddies List | BAG | . | M | 2.13.00 | 1271 |
| America Online Connect Service Data | . | . | M | 2.13.00 | 1409 |
| America Online Data | GLF, PPK | . | M | 2.06.00 | 1290 |
| America Online Image | ART | . | M | 2.07.00 | 1541 |
| America Online Index | IND | . | M | 2.13.00 | 1334 |
| America Online Instant Messenger Buddy List | BLT | . | M | 2.20.00 | 2892 |
| America Online Instant Messenger URL Cache | DAT | . | M | 2.10.00 | 1961 |
| America Online Internet Mail | IDX, LST | . | M | 2.14.00 | 1333 |
| America Online License | LIC | . | M | 2.07.00 | 1388 |
| America Online Personal File Cabinet | ORG, PFC, ARL, AUT, MAIL | . | M | 2.16.00 | 1335 |
| American College of Radiology File | ACR | . | M | 2.15.00 | 573 |
| American McGee's Alice Saved Game File | SPV, SAV | . | M | 2.11.00 | 2016 |
| AMI Professional Document / Styles | SAM, AMI, STY | Y | M | 2.19.00 | 1027 |
| Amiga Contiguous Bitmap | ACBM | Y | H | 2.18.00 | 2629 |
| Amiga Icon | INFO | . | M | 2.18.00 | 652 |
| Amiga IFF/16SVX Sound | SND, IFF, LBM, SVX | Y | H | 2.07.00 | 1522 |
| Amiga IFF/8SVX Sound | SND, IFF, LBM, 8SV, SVX, 8SVX | Y | H | 1.00.00 | 25 |
| Amiga Interleave File Format Image | LBM, IFF, ILM, BBM, ILBM, BLK | Y | H | 1.00.00 | 6 |
| Amiga Metafile Format | AMF, AMFF | Y | H | 2.18.00 | 1819 |
| Amiga Program | . | . | M | 2.21.00 | 3016 |
| Amiga ScreamTracker Music | STM, STX | Y | M | 2.11.00 | 141 |
| Amiga SoundTracker Music | EMD | Y | H | 2.18.00 | 1602 |
| Amiga SoundTracker Music | MOD, NST | Y | M | 2.16.00 | 16 |
| Amiga Wanton Packer Song/Module | WN | . | M | 2.12.00 | 2126 |
| AmigaGuide Hypertext Document | GUIDE | . | M | 2.14.00 | 2316 |
| AmigaOS Disk Image | ADF | . | M | 2.17.00 | 2569 |
| AMOS Music Bank | ABK | . | M | 2.19.04 | 480 |
| AMusic AdLib Tracker Music | AMD | . | M | 2.17.00 | 2572 |
| AMX Mod X Plug-in | AMXX | . | M | 2.15.00 | 2363 |
| Andrew Toolkit CMU File | CMU | . | M | 2.21.00 | 2975 |
| Andrew Toolkit Raster Image | ATK, CMU | . | M | 2.14.00 | 659 |
| Anfy Applet Generator Saved File | AJP | . | M | 2.15.00 | 2362 |
| Animatic Film | FLM | . | M | 2.12.00 | 2140 |
| Animation Studio File | CFT | . | M | 1.00.00 | 219 |
| Anivga Toolkit Sprite Image | COD | . | M | 2.17.00 | 2591 |
| ANSI Text File | ANS | . | M | 2.03.06 | 444 |
| AnswerWorks Search Glue File | MOR | . | M | 2.18.00 | 2720 |
| Antenna Data File | ADF | . | M | 2.18.00 | 2690 |
| Antenna Project | ATA | . | M | 2.20.00 | 2870 |
| Apabi eBook | CEB | . | M | 2.21.00 | 2952 |
| ApiViewer API Database | APV | . | M | 2.15.00 | 2367 |
| APlayer Module Music | UNI | . | M | 2.17.00 | 2584 |
| Apollo Database Engine Index | NSX | . | M | 2.10.00 | 1930 |
| Aportis Document | PDB | . | M | 2.17.02 | 2609 |
| Apple Email Message | EML, TXT | Y | H | 2.18.02 | 536 |
| Apple MPEG-4 ALE Audio | M4A, MP4, MPG4 | . | M | 2.07.00 | 1530 |
| Apple QuickTime Cache | QTCH | . | M | 2.19.02 | 2825 |
| AppleDouble MIME Format | DAT, AD | . | M | 2.16.00 | 2439 |
| AppleScript Script | SCPT | Y | M | 2.21.00 | 3023 |
| AppleSingle MIME Format | . | . | M | 2.16.00 | 2438 |
| Applixware Document | AG | . | M | 2.18.00 | 853 |
| Applixware Graphic Image | AG | . | M | 2.18.00 | 2696 |
| Applixware Spreadsheet | AS | . | M | 2.19.00 | 2767 |
| AptiQuiz Test | AQ1 | . | M | 2.18.00 | 2702 |
| AR7 Archive | AR7 | . | M | 2.14.00 | 2298 |
| Arc 6.0 MKS Archive | EXE | . | M | 1.00.00 | 82 |
| Arc Archive | ARC | . | M | 1.00.00 | 46 |
| Arc Self-Disolving Compressed Archive (C64) | SDA | . | M | 2.08.00 | 1596 |
| ArcExplorer Project | AEP | . | M | 2.15.00 | 2359 |
| Archos Encrypted / Signed Data | AAS, AOS | . | M | 2.19.04 | 2849 |
| ArCon Project File | ACP | . | M | 2.19.04 | 2851 |
| ArcView GIS Shape | SHP, SHX | . | M | 2.09.00 | 1063 |
| Arena Model (Quake 3) | MD3 | . | M | 2.10.00 | 1903 |
| Argo WebLoad I Upload File | WLF | . | L | 2.00.00 | 1148 |
| Argo WebLoad II Upload File | WBL | . | L | 2.00.00 | 1137 |
| Arj Archive | ARJ, A??, DSK | . | M | 2.14.00 | 21 |
| Arj Self Extracting Archive | EXE | . | M | 1.00.00 | 76 |
| ArmPack Archive | AP | . | M | 2.18.00 | 2700 |
| ArtMoney Table | AMT | . | M | 2.18.00 | 2698 |
| Arts & Letters Clipart Library | YAL | . | L | 2.00.00 | 1171 |
| Arts & Letters Editor Document | GED | . | M | 1.00.00 | 31 |
| Artweaver Painting | AWD | . | M | 2.18.00 | 2714 |
| ARX Compressed Archive | ARX | . | M | 2.08.00 | 1565 |
| ASD Archive | ASD | . | M | 2.14.00 | 586 |
| ASDG Split File | SPLT | Y | H | 2.18.00 | 2639 |
| Assembly Source Code File | ASM, INC | . | H | 2.09.01 | 1803 |
| Astrid/Quartex Advanced Audio Coding | AAC | . | M | 2.09.00 | 1709 |
| Atari 7800 ROM Image | A78 | . | M | 2.18.00 | 2687 |
| Atari Disk Image | ATR | . | M | 2.08.00 | 1691 |
| Atari Lynx ROM Image | LNX | . | M | 2.10.00 | 1894 |
| Atari MSA Disk Image | MSA | . | M | 2.17.00 | 884 |
| Atari ST Disk Image | ST | . | L | 2.00.00 | 1082 |
| Atari ST Guide Hypertext Document | HYP | . | M | 2.14.00 | 2317 |
| Atari ST MiNT Program | PRG, GEM, TTP | . | M | 2.14.00 | 2266 |
| Atari ST TOS Program | PRG, GEM, TTP | . | M | 2.11.00 | 1994 |
| Atari ST YM2149 Module/Song | YM | . | M | 2.07.00 | 1514 |
| Athena Document | ATH | . | M | 2.18.00 | 2708 |
| Atlantis Facsimile Image | FAXX | . | M | 2.18.00 | 2628 |
| Atmos Snapshot | DAT, TAP | . | M | 2.07.00 | 1455 |
| Atom Format | ATOM | Y | H | 2.16.00 | 2440 |
| Atomik Cruncher Archive | . | . | M | 2.18.00 | 2646 |
| Audacity Audio Block | AU, AUF | . | M | 2.18.00 | 1707 |
| Audacity Project File | AUP | . | M | 2.09.00 | 1708 |
| Audio IFF Compressed Sound | AIFC, AIFF, AIF, IFF, SND | Y | H | 2.08.00 | 1693 |
| Audio IFF Sound | AIFF, AIFC, AIF, IFF, SND | Y | H | 2.18.00 | 323 |
| Audio Manager Module | AMM | . | M | 2.18.00 | 2654 |
| Audio Manager Module (RIFF) | AMM | Y | H | 2.18.00 | 2653 |
| Audio Visual Research Sound | AVR | Y | M | 1.00.00 | 264 |
| AudioGraph Video (MacBinary) | DIST, DISTZ, PKG, MPKG | . | M | 2.16.00 | 2460 |
| Audition On-line Dance Battle Music | ABM | . | M | 2.15.00 | 2347 |
| Audition Play Data | ARP | . | M | 2.15.00 | 1145 |
| AUKTOOLS 2000 Compressed Archive | CMP | . | M | 2.08.00 | 1584 |
| AUPEC Audio | MV3 | . | M | 2.07.00 | 1536 |
| Authorware Course File (Packaged) | A4P, A4R | . | M | 2.15.00 | 594 |
| Authorware Course File (Without Runtime) | A4P | . | M | 2.19.04 | 2848 |
| Authorware Shocked File (Map) | AAM | . | M | 2.15.00 | 592 |
| Authorware Windows File (Unpackaged) | A3W, A4W, A5W | . | M | 2.15.00 | 593 |
| AutoCAD Color-dependent Plot Style Table | CTB | . | M | 2.21.00 | 2989 |
| AutoCAD Drawing | DWG | . | M | 2.03.06 | 26 |
| AutoCAD Drawing (MacBinary) | DWG | . | M | 2.09.00 | 1744 |
| AutoCAD Drawing Exchange (ASCII) | DXF | . | M | 2.03.18 | 73 |
| AutoCAD Drawing Exchange Binary | DXB, ACAD | . | M | 2.08.00 | 75 |
| AutoCAD Drawing Exchange(Binary) | DXF | . | M | 2.08.00 | 74 |
| AutoCAD Fast-load Auto LISP | FAS | . | M | 2.10.00 | 1850 |
| AutoCAD Material-Library | MLI | . | M | 2.10.00 | 1911 |
| AutoCAD Plot Drawing | PLT | . | M | 2.15.00 | 960 |
| AutoCAD Shape Entities | SHX | . | M | 2.13.00 | 2027 |
| AutoCAD Slide File | SLD | . | M | 2.11.00 | 1069 |
| Autochop File Part | #00, #01, #02, #03, #nn | . | M | 1.00.00 | 232 |
| Autodesk 3D Data Exchange Image | FBX | . | M | 2.19.00 | 2803 |
| AutoDesk Animator Cel Image | CEL, PIC | . | M | 2.14.00 | 2274 |
| AutoDesk Animator Flic | FLI, FLC, FII | Y | M | 1.00.00 | 8 |
| AutoDesk Inventor Export Journal | XLO | . | M | 2.07.00 | 1512 |
| AutoDesk Slide Library File | SLB | . | M | 2.17.00 | 1068 |
| AutoDesk Web Graphics Image | DWF | . | M | 2.10.00 | 692 |
| AutoLogic Picture | GM, GM2, GM4 | Y | M | 1.00.00 | 177 |
| Automation Compacter Archive | . | . | M | 2.18.00 | 2647 |
| Automation Packer Archive | . | . | M | 2.18.00 | 2648 |
| AutoREALM Map | AUR | . | M | 2.18.00 | 2710 |
| AutoREALM Symbols | AUS | . | M | 2.18.00 | 2711 |
| AutoSketch Drawing Database | SKD | . | M | 2.11.00 | 2031 |
| avast! Antivirus Skin | ASWCS | . | M | 2.20.00 | 2869 |
| AVCHD Clip Information | CPI | . | M | 2.21.00 | 2983 |
| AVG 6 Integrity Database | DAT | . | M | 2.21.00 | 2998 |
| AVHRR Satellite Image | NOAA, GOES | . | M | 2.07.00 | 902 |
| Avid Bin File | AVB | . | M | 2.18.00 | 2712 |
| AVS Field Data | FLD | . | M | 2.17.00 | 2532 |
| Award AWBM BIOS Bitmap | BMP | . | M | 2.20.00 | 2897 |
| AWS Virtual Tape Image | AWS | . | M | 2.18.00 | 2659 |
| AxCrypt Encrypted File | . | . | M | 2.18.00 | 2717 |
| AXS Realtime Analog Synthesizer Module | AXS | Y | H | 2.18.00 | 2658 |
| AXX Archive | AAX | . | M | 2.14.00 | 2295 |
| B2Z dVS Model object | B2Z | . | M | 2.07.00 | 1479 |
| Backup File (Unknown Source) | BAK, OLD | . | L | 1.05.00 | 506 |
| BaDonGo File Information | BADONGO | . | M | 2.20.00 | 2873 |
| Bag Compressed Archive | BAG | . | M | 2.08.00 | 1566 |
| BASIC Script/Source Code | BAS, CSC | . | H | 2.09.01 | 28 |
| Bee Compressed Archive | BEE | . | M | 2.08.00 | 1573 |
| Bells Whistles and Sound Boards Module Music | GDM | . | M | 2.17.00 | 2576 |
| BeOS Compiler Project | PROJ | . | M | 2.06.00 | 1353 |
| Berkeley UNIX Mailbox Format | MBOX, MBX | . | H | 2.17.00 | 862 |
| Bezerk Acrophobia Data File | SRF | . | M | 1.05.00 | 388 |
| BGBlitz Position Database | PDB | . | M | 2.09.00 | 833 |
| Big Flexible Line Interpretation (C64) Bitmap | BFLI | . | M | 2.20.00 | 2884 |
| Big Tag Image File Format | TIFF, TIF | Y | M | 2.21.00 | 2929 |
| Binary Data (Unknown Srce) (MacBinary) | BIN | . | M | 2.09.00 | 1767 |
| Binary Data File (Unknown Source) | BIN, BI | . | L | 1.05.00 | 380 |
| Binary Image File | BIF | . | M | 1.00.00 | 170 |
| BinHex Archive | HQX, HEX | Y | M | 1.00.00 | 259 |
| BinHex Archive (MacBinary) | HQX, HEX | . | M | 2.09.00 | 1797 |
| Bink Game Video | BIK, BINK | . | M | 2.12.00 | 2100 |
| BinSCII Compressed Archive | BSC, BSQ, BNS | . | M | 2.20.00 | 2903 |
| BioArc Compressed Archive | BIO | . | M | 2.08.00 | 1575 |
| BITCOM Dial-Up Script File | SCP | . | M | 2.03.06 | 559 |
| BitFax Document | BFX | . | M | 2.20.00 | 2886 |
| Bitstream FaceLift for Word Perfect Da | PDB | . | M | 2.14.00 | 2222 |
| Bitstream Font | SPD, FNB | . | M | 2.14.00 | 278 |
| Bitstream Printer Font | SF? | . | M | 1.00.00 | 213 |
| BitTorrent Download Configuration | CONFIG | . | M | 2.07.00 | 1417 |
| BitTorrent Metainfo | TORRENT | . | M | 2.07.00 | 1403 |
| BIX Compressed Archive | BIX | . | M | 2.14.00 | 1576 |
| BIZ dVS Model/Object | BIZ | . | M | 2.20.00 | 2888 |
| BlackBerry Application Loader | ALX | . | M | 2.18.00 | 2697 |
| BlackBerry Backup File | IPD | . | M | 2.13.00 | 2164 |
| Blackberry Compiled Java Code | COD | . | M | 2.21.00 | 2978 |
| BlackBerry Data | IL | . | M | 2.13.00 | 1194 |
| BlackBerry Data | ISH, BK0 | . | M | 2.10.00 | 1183 |
| BlackBerry Data | ITB | . | M | 2.03.06 | 1180 |
| BlackHole Compressed Archive | BH | . | M | 2.08.00 | 1574 |
| BlackWidow Website Description | WEB | . | M | 2.12.00 | 2115 |
| Blair Witch Project | POD | . | M | 2.15.00 | 485 |
| Bleem! Memory Card Save | MCD | . | M | 2.10.00 | 1897 |
| Blender 3D Project File Format | BLEND | . | M | 2.19.00 | 2784 |
| BlindWrite 5 Table of Contents/Tracks | B5T | . | M | 2.19.00 | 2755 |
| BLINK Compressed Archive | BLI | . | M | 2.08.00 | 1577 |
| Blitz3D/Max/Plus Texture or Mesh File | B3D | . | M | 2.19.00 | 2754 |
| Blizzard Texture | BLP | . | M | 2.20.00 | 2783 |
| Block DCT Compressor Image | KIF | . | M | 2.07.00 | 1546 |
| Blowfish Encrypted File | BFA | . | M | 2.20.00 | 2883 |
| Blu-ray Clip AV Stream | CLPI | . | M | 2.21.00 | 2968 |
| BMA Archiver Compressed Archive | BMA | . | M | 2.20.00 | 2894 |
| BMF Bitmap Image | BMF | . | M | 2.08.00 | 1647 |
| BMP Graphic Image | BMP | . | M | 1.00.00 | 162 |
| BOA Constrictor Compressed Archive | BOA, B58, B?? | . | M | 2.08.00 | 1580 |
| BONK Lossless/Lossy Compressed Audio | BONK | . | M | 2.16.00 | 2420 |
| Borland C++ Project File | IDE | . | M | 1.05.00 | 364 |
| Borland Database Engine Character Set | CVB | . | M | 2.07.00 | 1411 |
| Borland Delphi Form | DFM | . | M | 2.18.02 | 2725 |
| Borland Delphi Source Code | PAS | . | M | 2.18.02 | 2726 |
| Borland Graphics Interface Stroke Font | CHR | . | M | 2.06.00 | 1277 |
| Borland Graphics Printing Interface | BGI | . | M | 1.00.00 | 145 |
| Borland Graphics Video Interface | BGI | . | M | 2.10.00 | 1820 |
| Borland Paradox Database | DB | . | M | 2.21.00 | 3002 |
| Borland Paradox Index | Xnn, Ynn, Znn, XGn, YGn, ZGn | . | M | 2.21.00 | 568 |
| Borland Paradox PAL Script File | SC | . | L | 1.05.00 | 558 |
| Borland Paradox Primary Index | PX | . | M | 2.21.00 | 556 |
| Borland Paradox Report Format | R# | . | L | 1.05.00 | 557 |
| Borland Paradox Settings File | SET | . | L | 1.05.00 | 560 |
| Borland Paradox Sort Information | SOM | . | L | 1.05.00 | 562 |
| Borland Paradox Validity Check | VAL | . | L | 1.05.00 | 565 |
| Borland Text Language Dictionary | BTL | . | M | 2.06.00 | 1274 |
| BrainBox Neural Net | BBX | . | M | 2.20.00 | 2878 |
| BrainWave Generator Binaural Beat | BWG | . | M | 2.20.00 | 2911 |
| Brava Reader Content Sealed Format | CSF, SCSF | . | M | 2.10.00 | 1822 |
| Brian's Compression Shell Animation | BCS | . | M | 2.12.00 | 2099 |
| BrioQuery File | BQY | . | M | 2.20.00 | 2902 |
| BroadJump Character Set Conversion | CNV, DAT | . | M | 2.14.00 | 1281 |
| Broderbund Mohawk Archive | MHK | . | M | 2.08.00 | 1618 |
| Brother BES-100E Embroidery | BDF | . | M | 2.20.00 | 2881 |
| Brother Daisy Wheel Word Processor Document | . | . | M | 2.19.00 | 2739 |
| Brother Embroidery Software Font | BFN | . | M | 2.20.00 | 2885 |
| Brother Ink Jet Word Processor Document | . | . | M | 2.19.00 | 2740 |
| Brother Notebook Word Processor Document | . | . | M | 2.19.00 | 2741 |
| Brother SPN/France Word Processor Document | . | . | M | 2.19.00 | 2742 |
| Brother SPN/UK Word Processor Document | . | . | M | 2.19.00 | 2743 |
| Brother/Babylock/Bernina Embroidery | PES | . | M | 2.11.00 | 2023 |
| Bryce 6 Scene | BR6 | . | M | 2.19.00 | 2785 |
| BSA Packing Program Compressed Archive | BSN | . | M | 2.08.00 | 1581 |
| Btoa Encoded File | BOO | . | M | 2.14.00 | 2300 |
| BTPC Compressed Image | BTPC | . | M | 2.14.00 | 453 |
| BTSpk Archive | BTS | . | M | 2.14.00 | 2301 |
| Buero Plus NexT FlashFiler Database | BPD | . | M | 2.20.00 | 2900 |
| Business Plan Pro Data | BPD | . | M | 2.20.00 | 2901 |
| BvD Fileset | BVD | . | M | 2.20.00 | 2910 |
| BWC Archive | BC | . | M | 2.04.00 | 448 |
| ByteMap Font | BMF | . | M | 2.20.00 | 2896 |
| BZA Compressed Archive | BZA | . | M | 2.08.00 | 1582 |
| Bzip Archive V1 | BZ | . | M | 2.14.00 | 2302 |
| Bzip Archive V2 | BZ, BZ2, TBV2 | . | M | 2.19.00 | 1426 |
| C++ Dialogue Script | DLG, RC | . | M | 2.03.06 | 572 |
| C++ Program Header | HPP | . | L | 2.00.00 | 782 |
| C/C++ Source Code File | C, CPP, H, CC, PCH++, RC | . | M | 2.15.02 | 406 |
| CACTVS Clear Text File | CTX | . | M | 2.10.00 | 516 |
| Cadent 3D Model | 3DM | . | M | 2.15.00 | 2343 |
| CADRE Finite Element Mesh File | FEM | . | L | 2.00.00 | 719 |
| CADS Planner Drawing | DRW | . | M | 2.19.00 | 2778 |
| CadStd Drawing | CAD | . | M | 2.21.00 | 2932 |
| CakeWalk Audio Template File | TPL | . | L | 2.00.00 | 1095 |
| Cakewalk Music Audio Project | WRK | . | M | 2.17.00 | 1155 |
| Calamus Font | CFN | . | M | 2.21.00 | 2955 |
| Calamus Vector Graphic Image | CVG | . | M | 2.18.00 | 2668 |
| Calculux Indoor Project | CIN | . | M | 2.17.00 | 621 |
| Calendar Builder Saved Calendar | CBF | . | M | 2.21.00 | 2943 |
| Calendar Builder Style Sheet | CBS | . | M | 2.21.00 | 2945 |
| Calendar Creator Plus Calendar | CAL | . | M | 1.05.00 | 399 |
| Call Processing Language | CPL | Y | H | 2.16.00 | 2442 |
| CALS Raster Image | CAL, RAS, CALS | . | M | 1.00.00 | 180 |
| Canon BJ Escape Codes/Output | PRN | . | M | 1.00.00 | 277 |
| Canon Digital Camera Picture Catalog | CTG | . | M | 2.06.00 | 1222 |
| Canon Digital Camera RAW Image (CCDR) | CRW | . | M | 2.10.00 | 1824 |
| Canon Digital Camera RAW Image (CR) | CR2 | . | M | 2.19.00 | 2789 |
| Capella Gallery Music | CAG | . | M | 2.21.00 | 2934 |
| Capella Music Sheet | CAP | . | M | 2.21.00 | 2936 |
| Capture Classic Filler Template | JDT | Y | H | 2.17.00 | 2514 |
| CAR Compressed Archive | CAR | . | M | 2.08.00 | 1578 |
| Cartesian Products Compressed Internet Document | CPC | . | M | 2.21.00 | 2982 |
| Cascading Style Sheet | CSS, HTM | . | M | 2.05.02 | 415 |
| CaseMaker AcuBench Layout Structure | DLT | . | M | 2.15.00 | 2351 |
| CaseMaker AcuBench Program Structure | PSF | . | M | 2.15.00 | 2352 |
| CaseMaker AcuBench Project | PJT | . | M | 2.15.00 | 2353 |
| CaseMaker AcuBench Workspace Info. | WIF | . | M | 2.15.00 | 2350 |
| Casio Camera Image | CAM | . | M | 1.05.00 | 428 |
| Casio FZ-1 Bank Dump | FZB | . | L | 2.00.00 | 750 |
| Casio FZ-1 Full Dump | FZF | . | L | 2.00.00 | 751 |
| Casio FZ-1 Voice Dump | FZV | . | L | 2.00.00 | 752 |
| Casio Travel Phrase Database | ADT | . | M | 2.18.00 | 2693 |
| CASLwin Program | CSP | . | M | 2.16.00 | 2462 |
| CATIA Drawing | CATDRAWING | . | M | 2.21.00 | 2940 |
| CC:Mail Archive | CCA | . | M | 1.00.00 | 305 |
| CC:Mail Rule | RUL | . | M | 1.00.00 | 279 |
| CC:Mail Smart Icon | SMI | . | M | 2.11.00 | 280 |
| CCITT G.721 Raw 4 bit ADPCM File | G721 | . | L | 2.00.00 | 753 |
| CCITT G.723 Raw 3 or 5 bit ADPCM | G723 | . | L | 2.00.00 | 754 |
| CD Autorun Creator Package | ARN | . | M | 2.18.00 | 2705 |
| CD Catalog Localization Dictionary | CAT | . | M | 2.06.00 | 907 |
| CD-Image Description File | CUE | . | M | 2.14.00 | 2238 |
| CD-ROM Autoplay Menu | APM | . | M | 2.06.00 | 1267 |
| Cellsprings/Web or DT Rule File | CAR | . | M | 2.08.00 | 1579 |
| CER Internet Security Certificate | CER | . | M | 2.19.02 | 2823 |
| CH Compressor for Picture! Image | CHP | . | M | 2.07.00 | 1545 |
| Character Set View File | CSV | . | M | 2.00.00 | 1235 |
| ChArc Compressed Archive | CHZ | . | M | 2.08.00 | 1583 |
| Chaser Saved Game | SAV | . | M | 2.07.00 | 1445 |
| Cheat Engine Cheat Table | CT | . | M | 2.17.00 | 640 |
| Chemical Markup Language Document | CML | . | M | 2.21.00 | 2974 |
| Chess Tablebase | TBS | . | M | 2.11.00 | 2054 |
| Chile Compressed Archive | CHL | . | M | 2.21.00 | 2961 |
| ChiWriter Document 3.x | CHI | . | M | 2.21.00 | 2959 |
| ChiWriter Document 4.x | CHI | . | M | 2.21.00 | 2960 |
| Chuzzle Saved Game | DAT | . | M | 2.15.00 | 2354 |
| Cinderella (MacBinary) | CDY | . | M | 2.16.00 | 2461 |
| Cinema 4D Image | B3D | . | M | 2.07.00 | 1496 |
| Cinema 4D Layout | L4D | . | M | 2.07.00 | 1491 |
| Cinema 4D Model | C4D | . | M | 2.19.00 | 2787 |
| Cinema 4D V4 Data | MC4D, CINEMA4D | Y | H | 2.18.00 | 2290 |
| Cinema 4D V5 Catalog | . | . | M | 2.07.00 | 1494 |
| Cinema 4D V5 Document | . | . | M | 2.07.00 | 1493 |
| Cinema 4D V5 Function Curve | . | . | M | 2.07.00 | 1495 |
| Cinema 4D V5 Preferences | . | . | M | 2.07.00 | 1492 |
| Cinematic Video (Quake 2) | CIN | . | M | 2.07.00 | 1548 |
| Cineon Bitmap | CIN | . | M | 2.07.00 | 1547 |
| CircuitMaker Schematic | CKT | . | M | 2.21.00 | 2963 |
| CISO Compressed ISO CD Image | CSO | . | M | 2.19.00 | 2786 |
| Citrix Independent Computer Architecture File | ICA | . | M | 2.17.00 | 787 |
| Clam AntiVirus Database | CVD | . | M | 2.21.00 | 2990 |
| Claris Draw Image (MacBinary) | CDD | . | M | 2.09.00 | 644 |
| Claris Impact Draw (MacBinary) | CID | . | M | 2.09.00 | 589 |
| Claris Impact Template (MacBinary) | CIT | . | M | 2.09.00 | 1779 |
| Claris Works Document | CWK | . | M | 2.10.00 | 1823 |
| Claris Works Document (MacBinary) | CWK | . | M | 2.09.00 | 643 |
| ClickFORMS Data | CLK | . | M | 2.21.00 | 2965 |
| ClipArt Gallery Download Package | CIL | . | M | 2.19.00 | 2790 |
| CloneCD Control File | CCD | . | M | 2.08.00 | 1688 |
| CloneCD Sub Channel Data | SUB | . | M | 2.08.00 | 1689 |
| CMS Organ Data | ORG | . | M | 1.00.00 | 29 |
| Code Breaker Save | CBS | . | M | 2.21.00 | 2946 |
| Code Page Translation File | CPX | . | M | 2.17.00 | 636 |
| CoffeeCup Button Factory Button | CBF | . | M | 2.21.00 | 2944 |
| Collage Maker Graphic | CLG | . | M | 2.19.00 | 2788 |
| ColoRIX Image | RIX, SCI, SCX, SCZ, SC? | Y | M | 1.00.00 | 174 |
| Combustion Workspace Project | CWS | . | M | 2.21.00 | 2992 |
| Comma Separated Values Text File | CAS, CSV | Y | H | 2.15.00 | 451 |
| Commodore 64 Emulator Disk Image | X64 | . | M | 2.08.00 | 1589 |
| Commodore 64 PlaySID Music | SID, PSID | . | M | 2.08.00 | 1593 |
| Commodore 64 Raw Cassette Tape Image | TAP | . | M | 2.08.00 | 1591 |
| Commodore 64 RealSID Music | SID | . | M | 2.08.00 | 1594 |
| Commodore 64s Emulator Tape Image | T64 | . | M | 2.08.00 | 1592 |
| Commodore Power 64 Memory Image | . | . | M | 2.08.00 | 665 |
| Common Gateway Interface Script | CGI | . | L | 2.00.00 | 618 |
| Common Musical Score | CMUS | Y | H | 2.18.00 | 2631 |
| Common Name Resolution Protocol | CNRP | Y | H | 2.16.00 | 2441 |
| CommonSpace Document/Template (MacBinary) | CSP, CST | . | M | 2.16.00 | 2463 |
| Compact Disc Digital Audio Track | CDA | . | H | 2.13.00 | 499 |
| Compact Pro Self-Ext Arch (MacBinary) | . | . | M | 2.09.00 | 1796 |
| Compactor Pro Archive (MacBinary) | . | . | M | 2.09.00 | 1800 |
| Compiler Library (COFF) | LIB, A, AR | . | M | 2.14.00 | 95 |
| Compiler Library (MS Basic) | LIB | . | M | 2.10.00 | 1890 |
| Compiler Object | OBJ | . | M | 2.18.00 | 126 |
| Composite Attachment File | CAF, DAF, EM, PM | . | M | 2.16.01 | 2509 |
| Compressed Channel Data File | CNDF | . | M | 2.21.00 | 2976 |
| Compressed Square Wave Audio | CSW | . | M | 2.21.00 | 2378 |
| Compressed Voice File | DVF | . | M | 2.08.00 | 1698 |
| Computer Associates Archive | CAZ | . | M | 2.21.00 | 2941 |
| Computer Graphics Metafile (ASCII) | CGM | . | M | 2.04.01 | 569 |
| Computer Graphics Metafile (Binary) | CGM | . | M | 2.17.00 | 351 |
| ComputerEyes Animation | SNP, M00, M01, M02, Mnn | Y | M | 2.18.01 | 167 |
| ComputerEyes Raw Image | CE1, CE2 | Y | M | 2.12.00 | 1543 |
| Computerized Speech Lab Audio | NSP | Y | M | 2.09.00 | 1717 |
| CompW Bitmap | WLM | . | M | 2.08.00 | 1686 |
| Concept Draw Drawing/Diagram | CDD | . | M | 2.21.00 | 1379 |
| Configuration File (Binary) | CFG, CNF | . | M | 2.03.06 | 1240 |
| Configuration File (Text) | CFG, CNF, INI | . | M | 2.00.00 | 352 |
| Content Guard Digital Rights Management Database | DB | . | M | 2.18.00 | 648 |
| Context Free Design Grammar | CFDG | . | M | 2.21.00 | 2953 |
| Continuous Edge Graphic Image | CEG | . | M | 2.07.00 | 1544 |
| Cool 3D Image | UEZ | . | M | 2.11.00 | 2069 |
| Cool Edit Session File | SES | . | L | 2.00.00 | 1054 |
| Core Audio Format Sound | CAF | . | M | 2.18.00 | 2661 |
| Corel CENTRAL Address Book | ADB | . | M | 2.15.00 | 2358 |
| Corel ClipArt ScrapBook | SRB, SRI | Y | H | 2.17.00 | 2203 |
| Corel Color Match Profile | CCM | . | H | 2.07.00 | 1424 |
| Corel Compressed Image | WI | . | M | 2.07.00 | 1406 |
| Corel Custom Palette | CPL | . | L | 2.18.00 | 657 |
| Corel Draw Colorset | COL | . | M | 2.15.02 | 613 |
| Corel Draw Font/Symbols | WFN | . | M | 1.00.00 | 37 |
| Corel Draw Mask | MSK | . | H | 2.10.00 | 1420 |
| Corel Draw Raster (Intel) | CDR, PAT | Y | H | 2.15.03 | 241 |
| Corel Draw Raster (Motorola) | CDR, PAT | Y | H | 2.17.00 | 2597 |
| Corel Draw Raster (proprietary) | CDR | . | M | 1.00.00 | 38 |
| Corel Draw Script Texture | UDI | . | M | 2.07.00 | 1404 |
| Corel Draw Template | CDT | . | H | 2.07.00 | 612 |
| Corel Draw Texture | TEX | . | M | 2.10.00 | 1401 |
| Corel Draw Vector Pattern | PAT | . | L | 2.00.00 | 926 |
| Corel Draw Workspace | CW_ | . | M | 2.07.00 | 1370 |
| Corel Dream 3D Metafile | 3DMF | . | M | 2.07.00 | 1461 |
| Corel Dream 3D Model | D3D | . | M | 2.07.00 | 1460 |
| Corel Dream 3D Shader | SHA | . | M | 2.07.00 | 1396 |
| Corel Duotone File | CIK | . | M | 2.15.00 | 633 |
| Corel Graphics Draw Media Lines | NPM | . | M | 2.10.00 | 1928 |
| Corel Metafile Exchange Image (Intel) | CMX, PAT, CDR | . | H | 2.07.00 | 631 |
| Corel Metafile Exchange Img (Motorola) | CMX, PAT, CDR | . | H | 2.17.00 | 2279 |
| Corel Motion 3D Animation | M3D | . | L | 2.00.00 | 850 |
| Corel OCR Trace Configuration | CFG | . | M | 2.18.00 | 617 |
| Corel Paradox Delivered Library | LDL | . | L | 2.00.00 | 830 |
| Corel Paradox Saved Library | LSL | . | L | 2.00.00 | 840 |
| Corel PhotoPaint Image | CPT | . | M | 2.03.06 | 635 |
| Corel PhotoPaint Palette | CPL | . | M | 2.18.00 | 1967 |
| Corel PhotoPaint Shear Map | SHR | . | M | 2.07.00 | 1397 |
| Corel PhotoPaint Tone Curve | CRV | . | M | 2.07.00 | 1380 |
| Corel PhotoPaint User Defined Filter | USR | . | M | 2.07.00 | 1405 |
| Corel Presents Presentation | CPR | . | L | 2.00.00 | 634 |
| Corel Presents Run-Time Presentation | CRP | . | L | 2.00.00 | 637 |
| Corel Saved Search | FIN | . | M | 2.07.00 | 1383 |
| Corel Script | CSC | . | M | 2.03.06 | 638 |
| Corel Show Presentation | SHB, SHW | . | M | 2.03.06 | 1062 |
| Corel Software Identifier/Security | ID, BIN | . | M | 2.10.00 | 1966 |
| Corel Supplemental Dictionary | SUP | . | M | 2.07.00 | 442 |
| Corel Support File | TPA, SCK | . | M | 2.07.00 | 1407 |
| Corel Texture Colorset | COL | . | M | 2.03.06 | 467 |
| Corel Thesaurus | THS | . | M | 2.07.00 | 1402 |
| Corel Ventura Library | VLB | . | L | 2.00.00 | 1122 |
| Cosmic Blobs Model | BLOB | . | M | 2.20.00 | 2891 |
| CoverDesigner CD Cover Image/Template | NCD, NCT | . | M | 2.07.00 | 1498 |
| CPC Plus Cartridge Image | CPR | . | M | 2.10.00 | 1841 |
| CPI XRD Document | CPI | . | M | 2.19.00 | 2751 |
| CPIO Archive | CPIO | . | M | 2.07.00 | 1427 |
| cramfs ROM Filesystem Package | CMG | . | M | 2.21.00 | 2973 |
| Crayola Art Image | IMP | . | M | 1.00.00 | 32 |
| Crayola Image | ART | . | M | 1.00.00 | 33 |
| Creative Music File | CMF | Y | M | 1.00.00 | 39 |
| Creative SoundFont Manager Data | SFM | Y | M | 2.07.00 | 1414 |
| Creative Voice Sound | VOC | Y | M | 1.00.00 | 14 |
| Crick Software WordBar File | WBR | . | L | 2.00.00 | 1138 |
| Crick Software WordBar Template | WBT | . | L | 2.00.00 | 1139 |
| Cricket Graph Data | CGD | . | M | 1.00.00 | 40 |
| Cricket Graph Graphics | CGG | . | M | 1.00.00 | 41 |
| Cricket Graph Slide | CGT | . | M | 1.00.00 | 42 |
| Crocodile Physics Simulation | CYP | . | M | 2.21.00 | 2993 |
| Cross Talk for Windows PhoneBook | XWP | . | M | 1.00.00 | 43 |
| CrossePAC Compressed Archive | PAC | . | M | 2.06.00 | 1362 |
| Crunch Archive | . | . | M | 2.18.00 | 2649 |
| Crunch Mania Archive | . | . | M | 2.18.00 | 2651 |
| CRUSH Compressed Archive | CRU, CRUSH | . | M | 2.07.00 | 1428 |
| Cryo Interactive APC Audio | APC | . | M | 2.08.00 | 1696 |
| Cryo Interactive Game Data | BF | . | M | 2.20.00 | 2882 |
| CryptoMite Encrypted Archive | . | . | M | 2.10.00 | 1825 |
| Cryptx Encrypted File | CRYPT, CRYPTX | . | M | 2.21.00 | 2986 |
| Crystal Decisions 3D View Angles | 3DA | . | M | 2.13.00 | 2190 |
| Crystal Decisions Chart Gradient | 3WS | . | M | 2.13.00 | 2188 |
| Crystal Decisions Chart Template | 3TF | . | M | 2.12.00 | 2145 |
| Crystal Report | RPT | Y | H | 2.17.00 | 1020 |
| CrystalMaker Data v2-4 | CMDF | . | M | 2.21.00 | 2972 |
| CrystalMaker Data v5 | CMD5 | . | M | 2.21.00 | 2971 |
| Csound Unified File Format for Orchestras and Scores | CSD | . | M | 2.21.00 | 2987 |
| CTXf Compressed Archive | CXF | . | M | 2.14.00 | 1585 |
| Cult3D ActiveX Player Application | CO | . | M | 2.21.00 | 2977 |
| Cyber Paint Sequence Image | SEQ | Y | M | 2.12.00 | 2141 |
| DAKX Compressed Audio | DAX | Y | M | 2.09.00 | 1710 |
| Dark Forces Data | GOB | . | M | 1.00.00 | 242 |
| Darwin Pond Project | DWP | . | M | 2.19.00 | 2796 |
| Data File (Unknown Source) | DAT, DTA, DATA | . | L | 1.05.00 | 353 |
| Data Interchange Format Spreadsheet | DIF | . | M | 2.17.02 | 143 |
| Data Module Language Dictionary | DMD | . | M | 2.13.00 | 2154 |
| DataCAD Drawing File | DC5 | . | L | 2.00.00 | 668 |
| DataCAD Keyboard Macro | MCR | . | L | 2.00.00 | 864 |
| DataCAD Layer File | LYR | . | L | 2.00.00 | 848 |
| DataCAD Line Type File | LIN | . | L | 2.00.00 | 834 |
| DataCAD Symbol File | SM3 | . | L | 2.00.00 | 1070 |
| DataEase Database | DBM | . | M | 2.16.00 | 2427 |
| DB/TextWorks Database Access Control File | ACF | . | M | 2.18.00 | 2689 |
| DB/TextWorks Database Term and Word Indexes | BTX | . | M | 2.20.00 | 2909 |
| dBase III+ Database File | DBF | . | M | 1.00.00 | 58 |
| dBase III+ Form | FRM | . | M | 2.19.00 | 60 |
| dBase III+ Program File | PRG | . | M | 1.00.00 | 61 |
| dBase III+ Screen Format | FMT | . | M | 1.00.00 | 59 |
| dBase Index | NDX | . | M | 2.19.00 | 549 |
| DCA Compressed Archive | DCA | . | M | 2.08.00 | 1587 |
| DCM Music Module | DCM | . | M | 2.18.00 | 2669 |
| DCMO6 Emulator Tape Image | K7 | . | M | 2.10.00 | 1843 |
| Debian Linux Package | DEB | . | M | 2.16.00 | 2407 |
| DEC LN03+ Sixel Graphic Image | SIX, SIXEL, LN03 | . | M | 2.08.00 | 1065 |
| DEC Sound | SND | Y | M | 2.16.00 | 2422 |
| Dell Boot Sector File | DOS | . | M | 2.03.06 | 1213 |
| Dell Certification File | DCF | . | M | 2.13.00 | 1947 |
| DELL Program Diskette Image | IMG | . | M | 2.00.00 | 1229 |
| Delphi Compiled Package Code | DCP | . | M | 2.17.00 | 532 |
| Delphi Compiled Unit File | DCU | . | M | 2.14.00 | 649 |
| Delphi Diagram Portfolio | DDP | . | M | 2.14.00 | 678 |
| Deluxe Paint Animation | ANM | . | M | 2.07.00 | 1518 |
| Deluxe Paint Mono-Colour Font | M | . | M | 2.14.00 | 2324 |
| Deluxe Paint Multi-Colour Font | C | . | M | 2.14.00 | 2322 |
| Deluxe Paint Perspective Move | PRSP | Y | H | 2.18.00 | 2637 |
| Dependency Walker Image | DWI | . | M | 2.10.00 | 1831 |
| Descent 2 Mission File | MN2 | . | L | 2.00.00 | 879 |
| Descent 2 Registered Level | RL2 | . | L | 2.00.00 | 1013 |
| Descent Alternative Texture Set | POG | . | M | 2.06.00 | 967 |
| Descent Demo | DEM | . | M | 2.17.00 | 672 |
| Descent Font | FNT | . | M | 2.17.00 | 528 |
| Descent High Scores | HI | . | M | 2.17.00 | 529 |
| Descent Mission | HOG | . | M | 2.17.00 | 780 |
| Descent Mission Builder Blocks | BLK | . | M | 2.17.00 | 527 |
| Descent Movie Library | MVL | . | M | 2.17.00 | 630 |
| Descent Player | PLR | . | M | 2.17.00 | 530 |
| Descent Property Resource Data | HXM, HAM | . | M | 2.17.00 | 785 |
| Descent Property Resource Interchange | HMEL | . | M | 2.17.00 | 1102 |
| Descent Registered Level | RDL, RL2 | . | M | 2.17.00 | 1008 |
| Descent Robots | POF | . | M | 2.17.00 | 531 |
| Descent Texture Set | PIG | . | M | 2.15.00 | 1366 |
| DESI-III drawing | BIN | . | M | 2.20.00 | 2887 |
| Design Your Own Home Architect Drawing | AIG | . | M | 2.15.00 | 2361 |
| DesignCAD Drawing | DCD | Y | H | 2.17.00 | 2513 |
| Designer I Embroidery Machine Image | HUS | . | M | 2.09.00 | 1704 |
| Designer Schematic Capture Binary File | SCH | . | M | 2.11.00 | 2020 |
| DesignTools 2D Design | DTD | . | M | 2.21.00 | 2926 |
| DesignWorks Link | DWL | . | M | 2.16.00 | 2412 |
| DesignWorks Schematic | CCT | . | M | 2.16.00 | 2413 |
| DeskMate Clip Art | CLP | . | M | 2.21.00 | 2967 |
| DeskMate Document | DOC | . | M | 2.19.00 | 2775 |
| DeskMate Worksheet | WKS | . | M | 2.21.00 | 2927 |
| DESQview Group | GRP | . | M | 1.00.00 | 248 |
| Device Emulator System Store | DESS | . | M | 2.21.00 | 3022 |
| DexDrive Playstation Memory Card Save | GME | . | M | 2.10.00 | 1861 |
| DGIndex Project | D2V | . | M | 2.21.00 | 2994 |
| Diablo 630 Escape Codes/Output | PRN | . | M | 2.15.02 | 2404 |
| Diablo II Game Character/Equipment | D2S | . | M | 2.07.00 | 1481 |
| DiamondWare Digitized Audio | DWD | . | M | 2.08.00 | 691 |
| DICOM Image | DICM, DCM | . | M | 2.20.01 | 1550 |
| DICOM Image (MacBinary) | DICM, DCM | . | M | 2.16.00 | 2443 |
| Diet Archive | . | . | M | 1.00.00 | 48 |
| DIET Compressed DOS Program | COM | . | M | 2.10.00 | 1817 |
| Digibooster Music | DIGI | . | M | 2.17.00 | 2573 |
| DIGILINEAR Compressed Archive | DLC | . | M | 2.08.00 | 1600 |
| Digital Document Interchange Format Image | DDIF | . | M | 2.17.00 | 670 |
| Digital G Codec Archive | DGC | . | M | 2.08.00 | 1588 |
| Digital Moving Picture Exchange Bitmap (Intel) | DPX | . | M | 2.08.00 | 1671 |
| Digital Moving Picture Exchange Bitmap (Motorola) | DPX | . | M | 2.21.00 | 2923 |
| Digital Multi-Track Module/Song | S3M | Y | M | 2.03.18 | 235 |
| Digital Sheet Music | MTD | . | H | 2.17.00 | 1918 |
| Digital Speech Standard Compressed Audio | DSS | . | M | 2.15.00 | 2381 |
| Digital Terrain Elevation Data | DTED | . | L | 2.00.00 | 687 |
| Digital Video File | DV | . | L | 2.00.00 | 690 |
| Digital Video Interface Image | C16, I16, I8, CMY, CMI, CMQ, IM? | . | M | 2.12.00 | 2139 |
| Digital Video Interface Video | AVS, DVI | . | M | 2.12.00 | 2138 |
| Digitals/Delta Map File | DMF | . | M | 2.10.00 | 1827 |
| DigiTrakker Instrument | IST | . | M | 2.17.00 | 2571 |
| DigiTrakker module | DTM, MDL | . | M | 2.14.00 | 688 |
| Direct3D Object (Binary) | X, D3D, XIE | . | M | 2.06.00 | 1243 |
| Direct3D Object (Binary) Compressed | X, D3D, XIE | . | M | 2.17.00 | 2531 |
| Direct3D Object (Text) | X, D3D, XIE | . | M | 2.17.00 | 2529 |
| Direct3D Object (Text) Compressed | X, D3D, XIE | . | M | 2.17.00 | 2530 |
| DirectDraw Surface | DDS | . | M | 2.19.00 | 2793 |
| DirectInput Force Feedback Effect | FFE | . | H | 2.10.00 | 1832 |
| DirectMusic Producer Segments Type | SGT | . | H | 2.10.00 | 1833 |
| DirectMusic Style | STY | . | H | 2.10.00 | 1834 |
| Disintegrator Archive | DST | . | M | 2.14.00 | 2304 |
| Disk Copy Disk Image (MacBinary) | . | . | M | 2.09.00 | 1793 |
| Disk Directory | . | Y | H | 1.00.00 | 1 |
| Disk Doubler Archive (MacBinary) | . | . | M | 2.09.00 | 1774 |
| Disk Masher Compressed Disk Image | DMS | . | M | 2.08.00 | 1601 |
| Disk Volume Label | . | . | H | 1.00.00 | 2 |
| DisorderTracker 2 Module | PLM | . | M | 2.06.00 | 957 |
| DisplayWrite Document | . | . | M | 2.19.00 | 2744 |
| DjVu Document Image | DJVU, DJV | Y | H | 2.16.00 | 1826 |
| DjVu Document Image (MacBinary) | DJVU, DJV | . | M | 2.16.00 | 511 |
| DNL Page Turning e-Book | DNL | . | M | 2.19.00 | 2792 |
| DocuFile / EDMICS 2000 | DDD | . | M | 2.16.00 | 2466 |
| DocuFile / EDMICS 2000 Image | RLC | . | M | 2.16.00 | 513 |
| Document Style Definition | STYLEDEF | . | H | 2.17.00 | 582 |
| Dolby Theatre System Audio | DTS | . | M | 2.16.00 | 2421 |
| Doom Saved Game | DSG, SAVE | . | M | 2.10.00 | 682 |
| Dore Raster Image | DORE | . | M | 2.18.00 | 2671 |
| DOS Batch File | BAT, CMD | . | M | 2.15.00 | 22 |
| DOS Pipe File (Unknown Source) | $$$ | . | L | 1.05.00 | 501 |
| DOS Program | EXE, COM, SYS, OVL | Y | M | 1.00.00 | 15 |
| DOS Program (Tiny) | COM, BIN, SYS | Y | M | 2.18.00 | 30 |
| DOS Sound Interface Kit Module Music | DSM | . | H | 2.17.00 | 2574 |
| DownLoadable MIDI Sounds | DLS | . | H | 2.07.00 | 676 |
| Dpae Archive | DPA | . | M | 2.14.00 | 2303 |
| Dr. Halo Font | FON | . | M | 1.00.00 | 64 |
| Dr. Halo Palette | PAL | . | M | 2.11.00 | 66 |
| Dr. Halo Picture | PIC | . | M | 1.00.00 | 67 |
| Dr. Web Anti-Virus Database | VDB | . | M | 2.11.00 | 2074 |
| Drafix Windows CAD File | CAD | . | M | 1.00.00 | 243 |
| Drakan: Order Of The Flame Saved Game | RSG | . | M | 2.11.00 | 2011 |
| Draw Native Drawing (Compress+Preview) | ZMF | . | H | 2.12.00 | 2137 |
| Draw Native Drawing File | ZMF | . | M | 2.12.00 | 2135 |
| DrazLace IFLI Bitmap (C64) | DRL | . | M | 2.08.00 | 1672 |
| Dreamcast Audio | ADX | . | M | 2.07.00 | 1436 |
| Dreamcast Texture | SPR | . | M | 2.19.00 | 2772 |
| DreamWorks Resource Archive | BLB | . | M | 2.18.00 | 2660 |
| DriveCam Event Video | DCE | . | M | 2.19.00 | 2795 |
| Dual Module Player Music | AMF | Y | M | 1.00.00 | 231 |
| DVD MPEG2 Video Object File | VOB | . | H | 2.19.00 | 1212 |
| DVD Video Support File | BUP, IFO | . | M | 2.00.00 | 1219 |
| DVM Movie | DVM | . | M | 2.12.00 | 2102 |
| Dymo DLS Label File | LWL | . | M | 2.12.00 | 844 |
| Dynamic Adaptive Compression Tool Archive | . | . | M | 2.08.00 | 1586 |
| Dynamic File Format | DFF | . | M | 2.18.00 | 2670 |
| Dynamic Process Format Design | DPF | . | M | 2.18.00 | 2672 |
| E-mu SoundFont 2.0 MIDI Bank | SF2 | . | H | 2.07.00 | 1055 |
| EA Game MOD | BIG | . | M | 2.19.00 | 2781 |
| Earthlink Email Filter Rules | DAT | . | M | 2.10.00 | 1960 |
| Earthlink Email Message Index | MIF | . | M | 2.11.00 | 874 |
| Earthlink Email Messages | MSF | . | M | 2.10.00 | 1937 |
| Easy CD Creator Project Layout | CL5 | . | M | 2.06.00 | 1279 |
| EasyGPS TerraByte Location | LOC | . | M | 2.10.00 | 1895 |
| EasyRecovery Saved Recovery State | DAT | . | M | 2.15.00 | 2355 |
| eCos ROM File System Image (ROMFS) | ROM, FS | . | M | 2.14.00 | 2336 |
| Edlib FM tracker Module Music | EDL | . | M | 2.17.00 | 2575 |
| Eet Archive | EET | . | M | 2.16.00 | 2437 |
| eFax Electronic Fax Document | EFX, JSD | . | M | 2.15.00 | 1210 |
| eFax Electronic Fax Phonebook | ADG | . | M | 2.10.00 | 1939 |
| eFax Localization Data | DAT | . | M | 2.10.00 | 1959 |
| eFax Phone Book | ADR | . | M | 2.10.00 | 1968 |
| Egrid32 Compilable Grid Ready to be Compiled | CGF | . | M | 2.21.00 | 2956 |
| Egrid32 Compilable Grid Ready to be Modified | CGF | . | M | 2.21.00 | 2957 |
| Egrid32 Form | EGR | . | M | 2.10.00 | 1838 |
| Egrid32 Form Properties Template | EGP | . | M | 2.10.00 | 1837 |
| Egrid32 Form Snippet | SNL | . | M | 2.11.00 | 2038 |
| EICAR Anti-Virus Test File | COM | . | M | 2.10.00 | 1812 |
| EIOffice Document Binder | EIO | . | M | 2.10.00 | 1839 |
| Electric Image 3D Image | FACT | Y | H | 2.07.00 | 1483 |
| Electric Image File | EIDI, EI | . | L | 2.00.00 | 701 |
| Electronic Arts Game Audio 1 | ASF, AS4 | . | M | 2.18.00 | 2655 |
| Electronic Arts Game Audio 2 | KSF | . | M | 2.18.00 | 2656 |
| Electronics Workbench Circuit | EWB | . | M | 2.10.00 | 1847 |
| Elite Plus Commander Saved Game | CDR | . | M | 2.10.00 | 1840 |
| Empire Earth 1 Data | SSA | . | M | 2.20.00 | 2868 |
| Empty File | . | . | H | 1.00.00 | 316 |
| Emu48 Emulator Keyboard Configuration | KML | . | M | 2.16.00 | 2468 |
| Enable Spreadsheet | SSF | . | M | 2.20.00 | 1081 |
| Enable Wordprocessor Document | WPF | . | M | 2.19.00 | 1151 |
| Encapsulated PostScript Document | EPS, EPI, EPSF, AI | Y | H | 2.13.00 | 171 |
| Encapsulated PostScript Document (MacBinary) | EPS, EPI, EPSF, AI | . | M | 2.09.00 | 1732 |
| Encapsulated PostScript Preview | EPS, EPSF | . | M | 2.06.00 | 133 |
| EnCase Case Data | CAS, CBK | . | M | 2.07.00 | 1451 |
| EnCase Evidence Segment | EVF, Enn, E01, EWF, Lnn, L01, Snn, S01 | . | M | 2.20.02 | 1440 |
| EnCase Hash Database | HASH | . | M | 2.20.02 | 1385 |
| Encore Musical Notation | ENC | . | M | 2.19.00 | 2799 |
| EndNote Connection File | ENZ | . | M | 2.10.00 | 1845 |
| Enhanced Compressed Wavelet | ECW | . | M | 2.08.00 | 1673 |
| Enhanced Compressor Archive | ENC | . | M | 2.14.00 | 470 |
| Enhanced Perl-Parsed HTML | EPHTML | . | L | 2.00.00 | 704 |
| Enhanced Variable Rate Codec Sound | EVC | . | M | 2.16.00 | 2508 |
| Enhanced Variable Rate Codec Sound-B | EVB | . | M | 2.16.00 | 492 |
| Enot External Photo Viewer Settings | BWS | . | M | 2.20.00 | 2912 |
| Ensoniq ASR Disk Image | EDA | . | L | 2.00.00 | 694 |
| Ensoniq EPS Instrument | EFE | . | M | 2.15.00 | 696 |
| Ensoniq KT Disk Image | EDK | . | L | 2.00.00 | 697 |
| Ensoniq PARIS Audio Format | PAF | . | M | 2.08.00 | 1700 |
| Ensoniq SQ1/SQ2/KS32 Disk Image | EDQ | . | L | 2.00.00 | 698 |
| Ensoniq SQ80 Disk Image | EDS | . | L | 2.00.00 | 699 |
| Ensoniq VFX-SD Disk Image | EDV | . | L | 2.00.00 | 700 |
| Ensoniq Waveset | ECW | . | M | 2.06.00 | 1288 |
| Envoy Document | EVY, ENV | . | M | 2.07.00 | 251 |
| EPANET Data File | NET | . | M | 2.17.00 | 551 |
| EPOC16 Dynamic Link Library | DYL | . | M | 2.10.00 | 1835 |
| Erdas Image | LAN, GIS | Y | M | 1.00.00 | 181 |
| Eudora Email Message | EML, TXT | Y | H | 2.18.02 | 933 |
| Eudora Mailbox | MBX | . | L | 2.00.00 | 863 |
| Eudora Mailbox Table of Contents (MacBin) | TOC | . | M | 2.21.00 | 1093 |
| Euphoria Database System Database | EDB | . | M | 2.10.00 | 1836 |
| EVE Online Data | BLUE | . | M | 2.20.00 | 2893 |
| EVE Online Game Contents Archive | STUFF | . | M | 2.15.00 | 590 |
| EverAD PlayJ Sound | PLJ | . | M | 2.16.00 | 502 |
| Evolution Email Message | EML, TXT | Y | H | 2.18.02 | 538 |
| ExamView Performance File | PRF | . | M | 2.14.00 | 2220 |
| ExamView Question Bank | BNK | . | M | 2.14.00 | 2219 |
| ExamView Test File | TST | . | M | 2.14.00 | 2221 |
| Exchange Card | ECARD | . | M | 2.18.00 | 2674 |
| ExperVision TypeReader Database | DB | . | M | 2.14.00 | 2237 |
| ExperVision TypeReader Dictionary | DCT | . | M | 2.14.00 | 521 |
| Explorations RPG System MapGroup Object | EGRP, EOBJ, ECHR | . | M | 2.10.00 | 1848 |
| Exten. Metadata Platform Sidecar (XML) | XML, XMP | Y | H | 2.14.00 | 2338 |
| Extended Binary Coded Decimal Interchange Code (EBCDIC) | . | . | M | 2.19.00 | 2729 |
| Extended CPCEMU Style Disk Image | DSK | . | M | 2.10.00 | 1842 |
| Extended HTML Template | HTX | . | L | 2.00.00 | 784 |
| Extended ISA Adapter File | ADF | . | M | 2.00.00 | 409 |
| eXtensible ARchiver Archive | XAR | . | M | 2.15.00 | 684 |
| EXtensible Markup Language | XML, CDF, OSD, AWE, HTML, HTM | Y | H | 2.17.01 | 342 |
| EXtensible Markup Language (MacBinary) | XML, CDF, OSD, AWE, HTML, HTM | . | M | 2.09.00 | 1772 |
| EXtensible Markup Language (UTF-16BE) | XML | . | M | 2.14.00 | 2329 |
| EXtensible Markup Language (UTF-16LE) | XML | . | M | 2.14.00 | 2330 |
| EXtensible Markup Language (UTF-32BE) | XML | . | M | 2.14.00 | 2327 |
| EXtensible Markup Language (UTF-32LE) | XML | . | M | 2.14.00 | 2328 |
| EXtensible Markup Language (UTF-8) | XML | . | M | 2.14.00 | 2331 |
| Extensible Provisioning Protocol | EPP | Y | H | 2.16.00 | 2445 |
| EXtensible Style Language | XSL, XML, HTML, HTM, HTT, XSLT | Y | H | 2.15.00 | 570 |
| Extension-Sort Packer Archive | ESP | . | M | 2.10.00 | 706 |
| EXTRACAD Drawing | CAD | . | M | 2.21.00 | 2933 |
| Eyemail Video Recording | EYE | . | M | 2.19.00 | 2800 |
| Facility for Interactive Generation File | FIG | . | M | 2.17.00 | 2596 |
| Facsimile Group 3 Image | FAX, G3 | . | L | 2.00.00 | 714 |
| FairUse Wizard Project | FUP | . | M | 2.10.00 | 1852 |
| Family Lawyer Document | QFL | . | L | 2.00.00 | 991 |
| Family Tree CD Catalog | CTL | . | M | 2.10.00 | 1957 |
| Family Tree Database | FTW, FBK | Y | H | 2.17.00 | 1359 |
| Family Tree Spelling Lexicon Dict. | CLX | . | M | 2.10.00 | 1958 |
| Family Tree System File | BIN | . | H | 2.17.00 | 1970 |
| Fanta Vision Movie | MVE | . | M | 1.00.00 | 85 |
| Fanta Vision Movie (IFF) | FANT | Y | H | 2.17.00 | 2601 |
| FAR Manager Help File | HLF | . | M | 2.10.00 | 1864 |
| Farandole Composer Pattern | FPT | . | M | 2.10.00 | 1849 |
| Farandoyle Blocked Linear Module | F3R | . | L | 2.00.00 | 710 |
| Farandoyle Composer Music Module | FAR | . | M | 2.08.00 | 712 |
| Farandoyle Linear Module File | F2R | . | L | 2.00.00 | 709 |
| Farandoyle Sample File | FSM | . | M | 2.08.00 | 744 |
| Fast Infoset (XML) | FINF | Y | H | 2.16.00 | 2446 |
| FastTracker 2 Extended Music Module | XM | . | M | 2.14.00 | 1163 |
| FastTracker 2 Instrument Sample | XI | . | M | 2.14.00 | 1160 |
| Fat Binary | 68K, PPC | . | M | 2.19.00 | 2732 |
| FaxWorks Audio File | VMF | . | L | 2.00.00 | 1123 |
| FaxWorks Control Information | CTL | . | L | 2.00.00 | 641 |
| FerretSoft Cache Index | . | . | M | 2.07.00 | 24 |
| Fiasco Database | FDB | . | M | 2.17.00 | 717 |
| FIFA Football & Need for Speed Audio | ASF, AST | . | M | 2.08.00 | 588 |
| Figlet Font | FLF | . | M | 2.14.00 | 728 |
| File Investigator BVD Database | FIV | . | H | 2.07.00 | 1375 |
| File Investigator Data | FIB, FID, FIP, DES, PAT | . | M | 1.00.00 | 149 |
| File Investigator for DOS Help File | FIH | . | M | 2.03.06 | 286 |
| File Investigator Hash Code Database | FIH | Y | H | 2.07.00 | 1376 |
| File Investigator Scripts | JOB | Y | M | 1.00.00 | 150 |
| FileMaker Pro Database | FP, FP3, FPT, FMP, FP5 | . | M | 2.05.00 | 738 |
| FileMaker Pro File (MacBinary) | FP, FP3, FPT, FMP | . | M | 2.09.00 | 1746 |
| FileMaker Pro Font | FMF | . | M | 2.14.00 | 2212 |
| FileSync Profile | FSY | . | M | 2.10.00 | 1851 |
| Final Cut Pro Project | FCP | . | M | 2.19.00 | 2804 |
| Final Draft Document | FDD, FDR | . | M | 2.10.00 | 1950 |
| Final Fantasy Game Archive | LGP | . | M | 2.15.00 | 629 |
| Finale Music Score | MUS | . | M | 2.10.00 | 1919 |
| Findit Document | IOF | . | L | 2.00.00 | 801 |
| FireFly SDK Designer Project | PRJ | . | M | 2.11.00 | 1995 |
| Flash Color Table | CLR | . | M | 2.21.00 | 2969 |
| Flash Movie | FLA | Y | H | 2.17.00 | 727 |
| Flash Movie (MacBinary) | FLA | . | M | 2.09.00 | 1770 |
| Flash Video | FLV | . | M | 2.13.00 | 1188 |
| FlashPix Bitmap | FPX, CPX, FMP | Y | H | 2.17.00 | 740 |
| FlashPix Bitmap (MacBinary) | FPX, CPX, FMP | . | M | 2.16.00 | 512 |
| Flexible Image Transport System Bitmap | FITS, FIT, FTS, LST | . | M | 2.08.00 | 726 |
| Flight Simulator Aircraft Configuration | CFG | . | M | 2.21.00 | 2954 |
| FlightGear Scenery | BTG | . | M | 2.20.00 | 2908 |
| Floppy Disk Image (FAT12) | IMG, DD | . | H | 2.18.00 | 1473 |
| Floppy Disk Image (FAT16) | IMG, DD | . | H | 2.18.00 | 2675 |
| Flow Document | . | Y | H | 2.18.00 | 2632 |
| Flying Pigs for Windows Data | FP1 | . | L | 2.00.00 | 739 |
| Font File (Unknown Source) | FNT, FON | . | L | 1.05.00 | 533 |
| Font Navigator Font Group File | FNG | . | L | 2.00.00 | 734 |
| Fontographer Font | FOG | . | L | 2.00.00 | 736 |
| Foobar2000 Columns UI Settings | FCS | . | M | 2.13.00 | 2153 |
| Fookes Super NoteTab Template | OTL | . | L | 2.00.00 | 921 |
| Forensic Toolkit (FTK) Evidence | DAT | . | M | 2.07.00 | 1453 |
| fPrint Audit Tool File | FSF | . | L | 2.00.00 | 742 |
| Fractal Forge Fractal Parameters | MND | . | M | 2.06.00 | 868 |
| Fractal Image and Sequence Codec Image | WFA | . | M | 2.14.00 | 2277 |
| Fractal Image File | FIF | . | M | 2.08.00 | 725 |
| FrameMaker Book | FM, FRM | . | M | 2.20.00 | 2898 |
| FrameMaker Dictionary | . | . | M | 2.16.00 | 2409 |
| FrameMaker Document | FM, FRM | . | M | 2.04.01 | 730 |
| FrameMaker Element Definition Document | EDD | . | L | 2.00.00 | 695 |
| FrameMaker Interchange File | MIF | . | M | 2.06.00 | 872 |
| FrameMaker Screen Font | . | . | M | 2.16.00 | 2410 |
| Framer Animation | . | Y | H | 2.18.00 | 2630 |
| Framework II File | FW2 | . | L | 2.00.00 | 746 |
| Framework III File | FW3 | . | L | 2.00.00 | 747 |
| Framework IV File | FW4 | . | L | 2.00.00 | 748 |
| Free Graphics Format Image | FGF | . | M | 2.16.00 | 2416 |
| Free Lossless Audio Codec | FLAC, FLA | . | M | 2.03.06 | 1246 |
| Free Lossless Audio Codec Instrument | . | . | M | 2.08.00 | 1699 |
| Free Pascal Unit | PPU, PPL, PPO, PPW, PPA, PPT | . | M | 2.14.00 | 2332 |
| FreeArc Compressed Archive | ARC | . | M | 2.18.00 | 2703 |
| freeCAD assembly | ASM | . | M | 2.20.00 | 2866 |
| Freedom of the Press File | FOP | . | L | 2.00.00 | 737 |
| FreeFlow Variable Information (VI) Project | VI | . | M | 2.17.00 | 1111 |
| Freehand 3 Drawing (MacBinary) | FH3 | . | M | 2.09.00 | 1745 |
| Freehand 5 Drawing (MacBinary) | FH5 | . | M | 2.09.00 | 724 |
| Freehand 8 Document | FH8 | . | M | 2.09.00 | 1551 |
| Frogans Document | FNC | Y | H | 2.16.00 | 2465 |
| Frontier: First Encounters Music | HMP | . | M | 2.10.00 | 1865 |
| FrontPage Binary-Tree Index | BTR | . | M | 2.09.00 | 650 |
| Fugawi Global Navigator Route | RTE | . | M | 2.11.00 | 2013 |
| Fugawi Global Navigator Tracklog | TRK | . | M | 2.11.00 | 2064 |
| FunkTracker Module | FNK | . | M | 2.14.00 | 735 |
| Future Composer Music Module | WOW | . | M | 2.21.00 | 1150 |
| FutureVision Movie Soundtrack | FST | . | M | 2.18.00 | 2664 |
| FutureVision Resource Archive | CMP | . | M | 2.18.00 | 2663 |
| Fuzzy Bitmap Image | FBM | . | M | 2.08.00 | 1675 |
| FuzzySheet Document | FZS | . | M | 2.16.00 | 2467 |
| G Compressed Archive | GCA | . | M | 2.08.00 | 1604 |
| GameBryo Format File | NIF | . | M | 2.10.00 | 1924 |
| GameCube 3D Model (Texture + Skeleton) | BMD | . | M | 2.20.00 | 2895 |
| Games Factory Game | GAM | . | M | 2.07.00 | 1485 |
| Gaussian Cube Image | CUBE | . | M | 2.17.00 | 667 |
| GBG DraftMaker Drawing File | D | . | M | 2.15.00 | 2380 |
| GEDCOM Genealogical Data File | GED | . | M | 2.09.00 | 759 |
| GEM Metafile Image | GEM, GDI, VDI | . | M | 1.00.00 | 87 |
| GEM Metafile Image (Intel) | GEM, GDI, VDI | . | M | 2.14.00 | 2281 |
| GEM Metafile Image (Motorola) | GEM, GDI, VDI | . | M | 2.14.00 | 2280 |
| GEM Raster Image | IMG | . | M | 2.07.00 | 1459 |
| GEM VDI Paint Image | IMG, GEM | Y | M | 1.00.00 | 9 |
| GEM Write Format | FMT | . | M | 1.00.00 | 89 |
| GenePix Array List | GAL | . | M | 2.17.00 | 755 |
| GeneRally Track | TRK | . | M | 2.11.00 | 1097 |
| Generic CADD Drawing | GCD | . | M | 2.10.00 | 756 |
| Generic Forensic Zip Disk Image (Intel) | gfz, gfzip | . | M | 2.21.00 | 2916 |
| Generic Forensic Zip Disk Image (Motorola) | gfz, gfzip | . | M | 2.21.00 | 2917 |
| Generic Sound Sample | SND, SOU | Y | H | 2.07.00 | 1367 |
| Geom Image | GEOM | . | M | 2.17.00 | 2533 |
| Geometric Description Language Image | GDL, GSM, WIN, DOR, LMP, RSM, MSM, ISM | . | M | 2.16.00 | 517 |
| Getic 3D Scene/Model | BSP | . | M | 2.20.00 | 2905 |
| GetRight Download List | VSL | . | L | 2.00.00 | 1131 |
| GetRight File Mirror List | FML | . | L | 2.00.00 | 732 |
| GetRight Unfinished Download | GETRIGHT | . | L | 2.00.00 | 761 |
| GFA-BASIC ATARI Tokenized Source | GFA | . | M | 2.10.00 | 1855 |
| GFA-BASIC MS-DOS Tokenized Source | GFA | . | M | 2.10.00 | 1854 |
| GIMP Brush File | GBR | . | M | 2.10.00 | 1856 |
| GIMP Image | XCF, GZ | . | M | 2.10.00 | 1859 |
| GIMP Pattern File | PAT | . | M | 2.10.00 | 1857 |
| GLF 3D Font | GLF | . | M | 2.17.00 | 2534 |
| Global Message Exchange Email Message | EML, TXT | Y | H | 2.18.02 | 540 |
| GlueMon Song/Module | GLUE | . | M | 2.10.00 | 1860 |
| Glyph Bitmap Distribution Format Font | BDF | . | H | 2.18.00 | 595 |
| Glyph Translation Table | GTT | . | M | 2.13.00 | 2160 |
| Gmail Email Message | EML, TXT | Y | H | 2.18.02 | 539 |
| Gmini Firmware Update | AOS | . | H | 2.15.00 | 2365 |
| GNU Database Manager File | GDBM | . | M | 2.16.00 | 2426 |
| GNU Info Hypertext Document | INFO | . | M | 2.14.00 | 2318 |
| GNU TAR Archive | TAR | . | M | 2.14.00 | 2313 |
| GNUnet Directory | GND | . | M | 2.16.00 | 2417 |
| GOLD Parsing System Table | CGT | . | M | 2.21.00 | 2958 |
| Google Earth Keyhole Markup Langage | KML | Y | H | 2.16.00 | 2469 |
| Google Earth Keyhole Markup Language (MacBinary) | KML | . | M | 2.16.00 | 2470 |
| Google Earth Language Definition | QM | . | M | 2.18.00 | 994 |
| Google Sketchup Models | SKP | . | M | 2.19.02 | 2824 |
| Google Video Playlist | GVP | . | M | 2.19.02 | 2808 |
| Gould Scanner File | GOULD | . | L | 2.00.00 | 767 |
| GPS Pathfinder Office Almanac and Base Data | SSF | . | M | 2.19.00 | 2760 |
| Grace Project File | AGR | . | M | 2.15.00 | 2360 |
| GrafEq Document (MacBinary) | GQF, GQS | . | M | 2.16.00 | 2471 |
| Graoumftracker New Music Module | GT2 | . | M | 2.14.00 | 772 |
| Graoumftracker Old Music Module | GTK | . | L | 2.00.00 | 773 |
| Graphics Interchange Format | GIF, GIFF | Y | H | 2.19.00 | 4 |
| Graphics Interchange Format(MacBinary) | GIF, GIFF | . | M | 2.09.00 | 1747 |
| Graphics Workshop / GIF Cons Thumbnail | THN | . | M | 2.06.00 | 1345 |
| Graphing Calculator File | GCF | . | M | 2.19.02 | 2806 |
| GraphOn Graphics File | GO | . | L | 2.00.00 | 766 |
| Graphtec Vector Graphics Image | GSD | . | M | 2.19.02 | 2807 |
| Gravis GripKey Document | GKS | . | L | 2.00.00 | 764 |
| Gravis Ultrasound Patch | PAT | . | M | 1.00.00 | 202 |
| Gravis UltraSound PnP InterWave Patch | FFF | . | M | 2.03.06 | 721 |
| Gravis Xperience Joystick Gameset | GRX | . | M | 2.06.00 | 1291 |
| Gridded Binary Image | GRIB, GRB | . | M | 2.10.00 | 770 |
| Ground Control Point File | GCP | . | L | 2.00.00 | 757 |
| GroupWise User Word List | UWL | . | M | 2.19.03 | 2836 |
| GRZip Compressed Archive | GRZ | . | M | 2.08.00 | 1607 |
| GRZip II Compressed Archive | GRZ | . | M | 2.08.00 | 1608 |
| GTCoach Training Lesson | TRN | . | M | 2.06.00 | 1346 |
| Guide Document | GUI | . | M | 1.00.00 | 92 |
| Guitar Pro Tablature | GTP | . | M | 2.10.00 | 1862 |
| GVA2000 Author Lecture | GDB | . | M | 2.17.00 | 758 |
| GZA Compressed Archive | GZA | . | M | 2.08.00 | 1609 |
| Gzip Unix Archive | ??Z, GZ, Z, tar | . | M | 2.07.00 | 44 |
| H2O Compressed Archive | H2O | . | M | 2.15.00 | 2370 |
| Hacha Split File | 0, n, nn | . | M | 2.17.00 | 1173 |
| Half-Life Saved Game | SAV | . | M | 1.05.00 | 367 |
| Hangul Word Processor Document | HWP | . | M | 2.19.00 | 2756 |
| HAP Archive | HAP | . | M | 2.07.00 | 1429 |
| Hard Disk Image (FAT12) | IMG, DD | . | H | 2.18.00 | 2676 |
| Hard Disk Image (FAT16) | IMG, DD | . | H | 2.18.00 | 2677 |
| Hard Disk Image (FAT32) | IMG, DD | . | H | 2.18.00 | 2678 |
| Hard Disk Image (Linux) | IMG, DD | . | H | 2.18.00 | 2680 |
| Hard Disk Image (NTFS) | IMG, DD | . | H | 2.18.00 | 2679 |
| Harlequin RIP Image | PGB | . | M | 2.16.00 | 515 |
| Harvard Graphics Chart | CHT | . | M | 1.00.00 | 200 |
| Harvard Graphics Draw Image | HDW | . | H | 2.07.00 | 1423 |
| Harvard Graphics Palette | PAL | . | M | 1.00.00 | 94 |
| Harvard Graphics Presentation | PRS, SH3 | . | M | 2.19.00 | 974 |
| Harvard Graphics Presentation for DOS | SHW | . | M | 2.19.00 | 2750 |
| Harvard Graphics Symbol Image | SYW | . | M | 2.19.00 | 2735 |
| HashKeeper Hash Database | TXT, HSH | . | M | 2.07.00 | 1474 |
| HashKeeper Hash Database Index | TXT, HKE | . | M | 2.07.00 | 1475 |
| HBasic Source Code | BAS | . | M | 2.20.00 | 2874 |
| HEC-HMS Basin Model Settings | BASIN | . | M | 2.20.00 | 2875 |
| Helix Nuts and Bolts File | LPD | . | L | 2.00.00 | 838 |
| Help File | HLP, HSP, HLX | . | M | 1.00.00 | 57 |
| Hemera Photo-Object Image | HPI | . | M | 2.08.00 | 1651 |
| Hex Workshop Hex Editor Bookmark | HBK | . | M | 2.07.00 | 1487 |
| Hex Workshop Hex Editor Character Map | MAP | . | M | 2.10.00 | 1896 |
| Hierarchical Data Format File (v4) | HDF | . | M | 2.10.00 | 775 |
| Hierarchical Data Format File (v5) | HDF | . | M | 2.16.00 | 2411 |
| HighEdit Document | HED | . | L | 2.00.00 | 776 |
| History file | HST | . | L | 2.00.00 | 783 |
| Hitachi Raster File | HITACHI | . | L | 2.00.00 | 779 |
| Hitachi Raster Format Image | HRF | . | M | 2.08.00 | 1653 |
| Home Embroidery Image | DST | . | M | 2.09.00 | 685 |
| Home Embroidery Image | VIP | . | M | 2.09.00 | 1705 |
| Home World 2 Game Archive | BIG | . | M | 2.08.00 | 1634 |
| Home World 2 ROT Graphic Image | ROT | . | H | 2.10.00 | 1866 |
| Horde Internet Messaging Program (IMP) Email Message | EML, TXT | Y | H | 2.18.02 | 542 |
| Hotmail Email Message | EML, TXT | Y | H | 2.18.02 | 578 |
| HP Digital Imaging Cover Page Template | CVR | . | M | 2.14.00 | 2235 |
| HP Digital Imaging Layout | SIZE | . | H | 2.14.00 | 2243 |
| HP Digital Imaging Logical Page Info. | LOGPAGE | . | H | 2.14.00 | 2242 |
| HP Digital Imaging Product Assistant Database | DBF | . | M | 2.18.00 | 647 |
| HP Digital Imaging Project | CREATIVEPROJ | . | H | 2.14.00 | 2240 |
| HP Digital Imaging Template | CREATIVETEMPL | . | H | 2.14.00 | 2241 |
| HP Digital Imaging Theme | THEME | . | H | 2.14.00 | 2244 |
| HP Graphics Language Drawing | HGL, HPGL, PLT, HPG | . | M | 2.07.00 | 778 |
| HP Graphics Language Drawing (PJL) | HPGL, HGL, PLT | Y | H | 2.06.03 | 841 |
| HP Palmtop 100/200LX Icon | ICN | . | M | 2.07.00 | 1488 |
| HP Plotter Language Drawing | PGL, HPGL | . | L | 2.00.00 | 941 |
| HP Printer Control Language File | PCL, PRN, PJ, PJXL | . | M | 2.06.00 | 193 |
| HP Printer Control Language Image(PJL) | PCL, PRN, PJ, PJXL | Y | H | 2.06.03 | 836 |
| HP Raster Transfer Language Image | RTL | . | M | 1.00.00 | 201 |
| HP Scanner Profile | SPF | . | M | 2.14.00 | 2236 |
| HP-48/48sx/49 Graphic Object Bitmap | GRO | . | M | 2.08.00 | 1676 |
| HRU Bitmap | HRU | . | M | 2.08.00 | 1655 |
| HSI JPEG Picture | JPEG, JPG | Y | M | 2.12.00 | 173 |
| HSI Palette | PAL | . | M | 1.00.00 | 192 |
| HSI Raw Picture | RAW | Y | M | 1.00.00 | 194 |
| HTML + XML Namespace | XHTML, XHT | . | H | 2.16.00 | 488 |
| Hydrologic Modeling System Control Specifications Data | CONTROL | . | M | 2.21.00 | 2981 |
| Hyper Archive | HYP | . | M | 2.08.00 | 49 |
| HyperChem Molecule Image | HIV | . | M | 2.17.00 | 2535 |
| HyperStudio Stack (MacBinary) | STK | . | M | 2.16.00 | 2447 |
| HyperText Markup Language | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | Y | H | 2.16.00 | 315 |
| HyperText Markup Language (MacBinary) | HTML, HTM, HTT, HTTP, ASP, MHT, HTA, HT? | . | M | 2.09.00 | 1771 |
| HyperText Markup Language (UTF-16BE) | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | . | M | 2.19.03 | 2829 |
| HyperText Markup Language (UTF-16LE) | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | . | M | 2.19.03 | 2830 |
| HyperText Markup Language (UTF-32BE) | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | . | M | 2.19.03 | 2827 |
| HyperText Markup Language (UTF-32LE) | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | . | M | 2.19.03 | 2828 |
| HyperText Markup Language (UTF-8) | HTML, HTM, HT?, HTTP, ASP?, MHT, HH?, XM | . | M | 2.19.03 | 2831 |
| Hyperwriter! Document | HW3 | . | M | 1.00.00 | 84 |
| HYSYS Simulation | HSC | . | M | 2.13.00 | 2174 |
| IBM BookManager Bookshelf Book | BKS | . | M | 2.20.00 | 2890 |
| IBM BookManager Bookshelf Index | BKI | . | M | 2.20.00 | 2889 |
| IBM DCA Final Form Text | FFT | . | M | 2.19.00 | 723 |
| IBM DCA Revisable Form Text | RFT | . | M | 2.19.00 | 1010 |
| IBM Filing Assistant Database | . | . | M | 2.07.00 | 267 |
| IBM OS/2 2.0 Help | HLP | . | M | 1.00.00 | 239 |
| IBM OS/2 Bitmap | BMP, DIB, BGA | Y | M | 1.05.00 | 287 |
| IBM OS/2 True Type Font | TTF | . | M | 1.05.00 | 260 |
| IBM Storyboard Image | PIC | . | M | 2.08.00 | 1678 |
| IBM Writing Assistant Document | . | . | M | 1.00.00 | 268 |
| ICE Book Reader Book | . | . | M | 2.10.00 | 1821 |
| ICE Compressed DOS Program | COM | . | M | 2.10.00 | 1814 |
| ICEOWS Compressed Archive | ICE | . | M | 2.08.00 | 1611 |
| Ichitaro Document | JTD | . | M | 2.16.00 | 2436 |
| Icon Library File | ICL | . | L | 2.00.00 | 789 |
| IconAuthor Font Style Template | FTT | . | M | 2.07.00 | 1384 |
| IconAuthor SmartObject | SMT | . | M | 2.07.00 | 1398 |
| IconAuthor Start File | IWM | . | M | 2.07.00 | 438 |
| Id Software Game Map (Quake) | BSP, TMP | . | M | 1.05.00 | 385 |
| Id Software Game Model | MDL | . | M | 1.05.00 | 386 |
| Id Software Internal Data (Doom) | WAD, RTS | . | M | 1.00.00 | 282 |
| Id Software Internal Data (Quake) | PAK | . | M | 1.05.00 | 430 |
| Id Software Internal Data 3.0 | WAD | . | M | 1.05.00 | 375 |
| Id Software Internal Data 3.0 Hpack | HPK | . | M | 1.05.00 | 431 |
| Id Software Patch (Doom) | WAD | . | M | 1.00.00 | 322 |
| Id Software RoQ Movie | ROQ | . | M | 2.12.00 | 2108 |
| Id Software Sprite (Quake 2) | WAL | . | M | 2.21.00 | 1134 |
| IFF 3D Object | . | Y | H | 2.18.00 | 2634 |
| IFF Retargetable Graphic Image | RGFX | Y | H | 2.18.01 | 2652 |
| IFF Sound Sample | SAMP | Y | H | 2.18.00 | 2638 |
| IFF Tracker Song | TRKR | Y | H | 2.18.00 | 2642 |
| IFF YUV Image | YUVN | Y | H | 2.18.00 | 2643 |
| Image Access eXecutive File | IAX | . | L | 2.00.00 | 786 |
| Image Professional Compressed Bitmap | PMBC | Y | H | 2.18.00 | 2636 |
| ImageStyler | IST | . | M | 2.17.00 | 804 |
| Imagic Film/Picture Image | IC1, IC2, IC3 | . | M | 2.12.00 | 2142 |
| Imagine 3D Object | TDDD, TDD | Y | H | 2.18.00 | 2293 |
| Imagine Staging Stage Editor File | ISTG | Y | H | 2.10.00 | 1881 |
| Imago Morpheus Module Music | IMF | . | M | 2.17.00 | 2577 |
| iMelody Ringtone Sound | IMY | . | M | 2.10.00 | 1879 |
| Impress Presentation / Template | SDD, VOR | Y | H | 2.17.02 | 2540 |
| Impulse Tracker Music Module | IT, ITI | . | M | 2.14.00 | 805 |
| Indeo Video Format | IVF | . | M | 2.19.02 | 2812 |
| Index File (Unknown Source) | IND, IDX, Index | . | L | 1.05.00 | 362 |
| iNEW Emulator Audio | SND | . | M | 2.17.00 | 2582 |
| Infini-D 3D Image | INFINI | . | M | 2.17.00 | 2539 |
| Infinity Game Engine Area Description | ARE | . | M | 2.10.00 | 1868 |
| Infinity Game Engine Character Info | CHR | . | M | 2.10.00 | 1869 |
| Infinity Game Engine Creature Descript | CRE | . | M | 2.10.00 | 1871 |
| Infinity Game Engine Display Info | WED | . | M | 2.10.00 | 1875 |
| Infinity Game Engine GUI Elements | CHU | . | M | 2.10.00 | 1870 |
| Infinity Game Engine Spell | SPL | . | M | 2.10.00 | 1872 |
| Infinity Game Engine Spell Casting FX | VVC | . | M | 2.10.00 | 1874 |
| Infinity Game Engine Tileset | TIS | . | M | 2.10.00 | 1873 |
| Infinity Game Engine World Map | WMP | . | M | 2.10.00 | 1876 |
| Informed Filler Form (MacBinary) | IFM | . | M | 2.16.00 | 474 |
| Informed Filler Template (MacBinary) | ITP | . | M | 2.16.00 | 475 |
| Informed Interchange Document (MacBin) | IIF | . | M | 2.16.00 | 476 |
| Informed Package Document (MacBin) | IPK | . | M | 2.16.00 | 477 |
| InfoSoft Localization Database | ENU, ESN, ITA | . | M | 2.07.00 | 1412 |
| Initial Graphics Exchange Specification | IGES | . | M | 2.17.00 | 795 |
| Initialization File | INI, SYS, INF, ECF | . | M | 2.15.00 | 456 |
| InkWriter/Note Taker/Pocket Word Document | PWI, PSW | . | M | 2.11.00 | 2001 |
| Inno Setup Uninstall Log | DAT | . | M | 2.06.00 | 1341 |
| Inset Systems Metafile | IGF | . | L | 2.00.00 | 796 |
| Inspiration Concept Map (Flowchart) Document | ISF | . | M | 2.19.02 | 2810 |
| InstallShield 3.x Archive | Z, LIB, INS, 1, ??_ | . | M | 2.15.00 | 334 |
| InstallShield 5 Cabinet Archive | CAB, HDR | . | M | 2.08.00 | 347 |
| InstallShield Archive | EX_, ??_ | . | M | 1.05.00 | 359 |
| InstallShield Data | BIN, CFG | . | M | 2.10.00 | 1348 |
| InstallShield Definition File | DAT, CDF, DEF, FDF, INI | . | M | 2.00.00 | 1197 |
| InstallShield Index | INX | . | M | 2.17.00 | 1293 |
| InstallShield Install Script | INS | . | M | 2.00.00 | 154 |
| InstallShield Log File | ILG | Y | H | 2.17.00 | 1024 |
| InstallShield Skin File | SKIN, SKN | . | M | 2.17.00 | 1313 |
| InstallShield Uninstall Script | ISU | . | M | 1.00.00 | 204 |
| Intel Video Phone File | LRC | . | L | 2.00.00 | 839 |
| Intel Wireless Event Profile Importer | EPI | . | M | 2.18.00 | 651 |
| Intellifont Scalable Typeface | LIB | . | M | 2.14.00 | 2323 |
| InterActual Installer Disk Identifier | ID | . | M | 2.04.00 | 1257 |
| Interchange File Format | IFF | Y | H | 2.07.00 | 233 |
| International Laser Display Association 2D Image | ILD | . | M | 2.17.00 | 2537 |
| International Laser Display Association 3D Image | ILD | . | M | 2.17.00 | 2536 |
| International Laser Display Association Colour Palette | ILD | . | M | 2.17.00 | 2538 |
| Internet Data Query File | IDQ | . | L | 2.00.00 | 793 |
| Internet Database Search Agent | . | . | M | 2.07.00 | 1371 |
| Internet Document Set | ITS | . | L | 2.00.00 | 806 |
| Internet Low Bit Rate Codec Sound | LBC | . | M | 2.16.00 | 493 |
| Internet Message | TXT, EML | Y | H | 2.18.02 | 703 |
| Internet Message (MIME) | TXT, EML, MHT, MIM, MME, MIME | Y | H | 2.18.02 | 1262 |
| Internet Message (UU-Encoded) | TXT, EML | Y | H | 2.18.02 | 1263 |
| Internet X.509 Public Key DVCS Prot. | DVCS | . | M | 2.16.00 | 2444 |
| Interplay Movie | MVE | . | M | 2.06.00 | 1342 |
| Interplay Sound | SND | Y | M | 1.00.00 | 238 |
| Intuity AUDIX Multimedia Message | LVP | . | M | 2.16.00 | 505 |
| Intuity AUDIX Multimedia Msg (MacBin) | LVP | . | M | 2.16.00 | 507 |
| Iomega Loadable Driver Module | ILM | . | M | 2.06.00 | 1350 |
| iPer Advanced Embedded Hypertext | AEH | . | M | 2.19.04 |