| 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 Systems Stereolithography CAD Image (ASCII) | STL | . | H | 2.22.00 | 3172 |
| 3D Systems Stereolithography CAD Image (Binary) | STL | . | M | 2.22.00 | 3173 |
| 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, MP4, MPG | . | M | 2.23.00 | 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 | 2.22.00 | 2296 |
| ABIF Applied Biosystems Inc. Format | AB1, FSA | . | M | 2.15.00 | 2346 |
| AbiWord Compressed Document | ZABW, GZ | . | M | 2.22.00 | 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 Self Extracting Archive | EXE | . | M | 2.22.00 | 3171 |
| Ace Ventura Game Archive | BIN | . | M | 2.15.00 | 487 |
| ACE/gr Fit Description Data | . | . | M | 2.23.00 | 3241 |
| ACE/gr Parameter Data (ASCII) | . | . | M | 2.23.00 | 3240 |
| AceText Collection | ATC | . | M | 2.16.00 | 2457 |
| ACIS 3D Model | SAT | . | M | 2.17.00 | 2563 |
| Acrobat XML Data Package File | XDP, XDC | 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 Dictionary | 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 |
| AFX/XPFX Archive | AFX | . | M | 2.18.00 | 2645 |
| AGEMA File | AFF | . | M | 2.19.04 | 2856 |
| Ai Archiver Archive | AI | . | M | 2.22.00 | 3080 |
| Ai32 Archiver Archive | AI | . | M | 2.22.00 | 1520 |
| AIN Archiver Archive | 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 | 2.22.00 | 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 |
| AMANDA Backup Tape Changer Data | . | . | M | 2.23.00 | 3183 |
| 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 |
| AMGC Archive | AMGC | . | M | 2.22.00 | 3060 |
| AMI Professional Document / Styles | SAM, AMI, STY | Y | M | 2.19.00 | 1027 |
| Amiga Contiguous Bitmap | ACBM | Y | H | 2.18.00 | 2629 |
| Amiga DOS Disk | . | . | M | 2.23.00 | 3188 |
| Amiga Fastdir DOS Disk | . | . | M | 2.23.00 | 3192 |
| Amiga Fastdir FFS Disk | . | . | M | 2.23.00 | 3193 |
| Amiga FFS Disk | . | . | M | 2.23.00 | 3189 |
| 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 Inter DOS Disk | . | . | M | 2.23.00 | 3190 |
| Amiga Inter FFS Disk | . | . | M | 2.23.00 | 3191 |
| Amiga Interleave File Format Image | LBM, IFF, ILM, BBM, ILBM, BLK | Y | H | 1.00.00 | 6 |
| Amiga Kickstart Disk | . | . | M | 2.23.00 | 3194 |
| Amiga Library Data | . | . | M | 2.23.00 | 3185 |
| Amiga Metafile Format | AMF, AMFF | Y | H | 2.18.00 | 1819 |
| Amiga Program | . | . | M | 2.23.00 | 3016 |
| Amiga Rigid Disk Block | . | . | M | 2.23.00 | 3187 |
| Amiga ScreamTracker Music | STM, STX | Y | M | 2.11.00 | 141 |
| Amiga Shared Library | . | . | M | 2.23.00 | 3184 |
| 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 |
| Amiga Workbench Icon | INFO | . | M | 2.18.00 | 652 |
| Amiga XPKF Compressed Archive | . | . | M | 2.22.00 | 3122 |
| AmigaGuide Hypertext Document | GUIDE | . | M | 2.14.00 | 2316 |
| AmigaOS Disk Image | ADF | . | M | 2.17.00 | 2569 |
| AmigaWriter Document | . | . | M | 2.22.00 | 3111 |
| 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 | 2.23.00 | 2609 |
| Apple Email Message | EML, TXT | Y | H | 2.22.01 | 536 |
| Apple Emulator 2IMG Disk Image (General Format) | 2MG, 2IMG | . | M | 2.23.00 | 3199 |
| Apple MPEG-4 ALE Audio | M4A, MP4, MPG4 | . | M | 2.07.00 | 1530 |
| Apple QuickTime Cache | QTCH | . | M | 2.23.00 | 2825 |
| Apple UFS Disk Image | . | . | M | 2.22.00 | 3131 |
| 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 Bitmap Image | AB | . | M | 2.23.00 | 3210 |
| Applixware Builder Object | . | . | M | 2.23.00 | 3212 |
| Applixware Document | AG | . | M | 2.18.00 | 853 |
| Applixware Graphic Image | AG | . | M | 2.18.00 | 2696 |
| Applixware Macro | AM | . | M | 2.23.00 | 3211 |
| Applixware Spreadsheet | AS | . | M | 2.19.00 | 2767 |
| Applixware Words Document | AW | . | M | 2.23.00 | 3209 |
| 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 |
| ArcFS RISC OS Archive | . | . | M | 2.23.00 | 3214 |
| 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 |
| ARQ Archive | ARQ | . | M | 2.22.00 | 3066 |
| ARS Archive | ARS | . | M | 2.22.00 | 3074 |
| Art Of Noise Module | . | . | M | 2.23.00 | 3186 |
| 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 |
| ASIMOV2 Apple Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 3204 |
| ASP.NET Master Page | MASTER | . | M | 2.23.00 | 3311 |
| ASP.NET Web Handler | ASHX | . | M | 2.23.00 | 3312 |
| Assembly Source Code File | ASM, INC | . | H | 2.09.01 | 1803 |
| Aster*x v1 Graphic Image | . | . | M | 2.23.00 | 3216 |
| Aster*x v1 Macro | . | . | M | 2.23.00 | 3218 |
| Aster*x v1 Spreadsheet | . | . | M | 2.23.00 | 3217 |
| Aster*x v1 Words Document | . | . | M | 2.23.00 | 3215 |
| Aster*x v2 Graphic Image | . | . | M | 2.23.00 | 3220 |
| Aster*x v2 Macro | . | . | M | 2.23.00 | 3222 |
| Aster*x v2 Spreadsheet | . | . | M | 2.23.00 | 3221 |
| Aster*x v2 Words Document | . | . | M | 2.23.00 | 3219 |
| 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 Guide Hypertext Document | HYP | . | M | 2.14.00 | 2317 |
| Atari ST Minix Disk Image | ST | . | M | 2.22.00 | 1082 |
| 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 |
| AVG 7 Antivirus Vault | . | . | M | 2.23.00 | 3233 |
| 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 | 2.22.00 | 28 |
| BDicty Dictionary | . | . | M | 2.23.00 | 3280 |
| 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 | 2.22.01 | 862 |
| Bernie ][ the Rescue Apple Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 3203 |
| 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 Source) (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 BPython Script | . | . | M | 2.23.00 | 3224 |
| 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 | 2.22.00 | 1581 |
| BSArc/BS2 Archive | BSA, BS2 | . | M | 2.22.00 | 3056 |
| BSD System V AR Archive | AR | . | M | 2.23.00 | 3054 |
| 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 | 2.22.00 | 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 |
| Catakig Apple Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 3200 |
| 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 |
| 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 | 2.23.00 | 2823 |
| CGNS Advanced Data Format Database | . | . | M | 2.23.00 | 3225 |
| 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 |
| ChiefLZA Archive | . | . | M | 2.22.00 | 3073 |
| 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 |
| Compaq/HP RILOE Disk Image | . | . | M | 2.22.00 | 3147 |
| 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 |
| Compressia Archive | . | . | M | 2.22.00 | 3082 |
| 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 | 2.22.00 | 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 |
| CosmicBook Hypertext Document | . | . | M | 2.22.00 | 3110 |
| 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 | 2.22.00 | 1427 |
| 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 |
| Cyrus Skiplist Database | . | . | M | 2.22.00 | 3051 |
| 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 II Database | DBF | Y | H | 2.22.00 | 3157 |
| 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 III+/FoxBase+ Database (with memo) | DBF | Y | H | 2.22.00 | 3150 |
| dBase III/III+/IV/FoxBase+/FoxPro Database | DBF | Y | H | 2.22.00 | 58 |
| dBase Index | NDX | . | M | 2.19.00 | 549 |
| dBase IV Database | DBF | Y | H | 2.22.00 | 3152 |
| dBase IV Database (with memo) | DBF | Y | H | 2.22.00 | 3154 |
| dBase IV Database (with SQL table) | DBF | Y | H | 2.22.00 | 3155 |
| dBase V Database | DBF | Y | H | 2.22.00 | 3153 |
| DC Archive | DC | . | M | 2.23.00 | 3078 |
| 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 | 2.22.00 | 2407 |
| DEC LN03+ Sixel Graphic Image | SIX, SIXEL, LN03 | . | M | 2.08.00 | 1065 |
| DEC Sound | SND | Y | M | 2.16.00 | 2422 |
| Dell BIOS Image | HDR | . | M | 2.23.00 | 3261 |
| 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 |
| Deluxe Video Construction Set Video | . | Y | H | 2.23.00 | 3251 |
| 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 Asset Exchange File | DAE | . | H | 2.22.00 | 3038 |
| 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 UNIX Core Dump | . | . | M | 2.23.00 | 3182 |
| 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 |
| Digital Video Movie | DV | . | M | 2.22.00 | 690 |
| 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 | Y | M | 2.23.00 | 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 | 2.23.00 | 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 | 2.22.00 | 2671 |
| DOS Batch File | BAT, CMD | . | M | 2.15.00 | 22 |
| DOS Emulator Disk Image | . | . | M | 2.22.00 | 3125 |
| 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 |
| Dry Archive | DRY | . | M | 2.23.00 | 3063 |
| 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 |
| Dzip Self Extracting Archive | EXE | . | M | 2.22.00 | 3162 |
| 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 |
| Emacs RMAIL News Message | . | . | M | 2.22.00 | 3049 |
| 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 |
| Encrypted Data (Headerless) | FLK | . | M | 2.23.00 | 3174 |
| EncryptOnClick (Encrypted) | EOC | Y | H | 2.23.00 | 3178 |
| 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 |
| EPC Archive | EPC | . | M | 2.22.00 | 3081 |
| 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 | 2.22.01 | 933 |
| Eudora Mailbox | MBX | . | M | 2.22.00 | 863 |
| Eudora Mailbox Table of Contents (MacBinary) | 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 | 2.22.01 | 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 |
| EXP1 Archive | EXP1 | . | M | 2.22.00 | 3070 |
| 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 3D Model | X3D | . | H | 2.23.00 | 3195 |
| 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 |
| FaceSave Image | FACE | . | M | 2.22.00 | 3039 |
| Facility for Interactive Generation File | FIG | . | M | 2.17.00 | 2596 |
| Facsimile Group 3 Image | FAX, G3 | . | M | 2.22.00 | 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 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 |
| Fidonet Message Area Database | JAM, JHR | . | M | 2.22.00 | 3052 |
| 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 |
| FireViewer/ImageViewer Image | . | . | M | 2.23.00 | 3281 |
| FlagShip Database (with memo) | DBF | Y | H | 2.22.00 | 3156 |
| 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 Cytometry Standard Data | . | . | M | 2.23.00 | 3229 |
| 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 (MacBinary) | FOG | . | M | 2.22.00 | 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 |
| Formatted Disk Image/Data Block | . | . | M | 2.22.00 | 3123 |
| FoxBase Database | DBF | Y | H | 2.22.00 | 3151 |
| FoxPro/RealMedia CD Tracks Database | DBF | Y | H | 2.22.00 | 1349 |
| FoxSQZ Archive | . | . | M | 2.22.00 | 3064 |
| 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 MML File | MML | . | M | 2.22.00 | 3149 |
| 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 |
| FreeBSD Screen Shot | . | . | M | 2.23.00 | 3232 |
| 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 |
| Freehand 9 Document | FH9 | . | M | 2.23.00 | 3230 |
| Freeze Archive | . | . | M | 2.22.00 | 3061 |
| 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 |
| Galeon Browser Cookie | . | . | M | 2.23.00 | 3301 |
| GameBryo Animation | KFM | . | M | 2.23.00 | 3235 |
| 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 |
| Gather Archive | GTH | . | M | 2.22.00 | 3068 |
| 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 | 2.23.00 | 1854 |
| GFS2 File System Disk Image | . | . | M | 2.22.00 | 3148 |
| GIMP Brush Data | GBR | . | M | 2.23.00 | 1856 |
| GIMP Curves Data | . | . | M | 2.23.00 | 3238 |
| GIMP Gradient Data | . | . | M | 2.23.00 | 3237 |
| GIMP Image | XCF, GZ | Y | M | 2.23.00 | 1859 |
| GIMP Pattern Data | PAT | . | M | 2.10.00 | 1857 |
| GLF 3D Font | GLF | . | M | 2.17.00 | 2534 |
| Global Message Exchange Email Message | EML, TXT | Y | H | 2.22.01 | 540 |
| GlueMon Song/Module | GLUE | . | M | 2.10.00 | 1860 |
| Glyph Bitmap Distribution Format Font | BDF | . | H | 2.23.00 | 595 |
| Glyph Translation Table | GTT | . | M | 2.13.00 | 2160 |
| Gmail Email Message | EML, TXT | Y | H | 2.22.01 | 539 |
| Gmini Firmware Update | AOS | . | H | 2.15.00 | 2365 |
| GNOME Keyring | PKR | . | M | 2.23.00 | 3239 |
| GNU Compiler Collection Precompiled Header | GCH | . | M | 2.23.00 | 3236 |
| GNU Database Manager File | GDBM | . | M | 2.16.00 | 2426 |
| GNU Info Hypertext Document | INFO | . | M | 2.14.00 | 2318 |
| GNU Message Catalog (Intel) | . | Y | M | 2.23.00 | 3093 |
| GNU Message Catalog (Motorola) | . | Y | M | 2.23.00 | 3094 |
| GNU TAR Archive | TAR | . | M | 2.14.00 | 2313 |
| Gnumeric Spreadsheet | . | . | M | 2.23.00 | 3098 |
| GNUnet Directory | GND | . | M | 2.16.00 | 2417 |
| GnuPG Encrypted Data | . | . | M | 2.22.00 | 3097 |
| GnuPG Key Trust Database | GPG | . | M | 2.22.00 | 3096 |
| 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 |
| Gringotts Encrypted Data | GRG | Y | M | 2.23.00 | 3242 |
| Ground Control Point File | GCP | . | L | 2.00.00 | 757 |
| GroupWise Admin Database | . | . | M | 2.22.00 | 3109 |
| GroupWise Message | . | . | M | 2.22.00 | 3108 |
| 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 |
| GTKtalog Catalog Archive | GTK | . | M | 2.23.00 | 3116 |
| 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 | 2.22.00 | 44 |
| H2O Compressed Archive | H2O | . | M | 2.15.00 | 2370 |
| Hacha Split File | 0, n, nn | . | M | 2.17.00 | 1173 |
| HackMaster Hack | . | . | M | 2.23.00 | 3279 |
| Half-Life Saved Game | SAV | . | M | 1.05.00 | 367 |
| HanDBase Database | . | . | M | 2.23.00 | 3282 |
| 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 |
| Hard Disk Image (SysLinux) | IMG, DD | . | H | 2.22.00 | 3126 |
| 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 |
| High Sierra CD-ROM Filesystem | . | . | M | 2.22.00 | 3135 |
| HighEdit Document | HED | . | L | 2.00.00 | 776 |
| History file (Unknown Source) | 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 | 2.22.01 | 542 |
| Hotmail Email Message | EML, TXT | Y | H | 2.22.01 | 578 |
| HP Bitmap Image | . | . | M | 2.23.00 | 3243 |
| 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 | . | M | 2.23.00 | 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, HTM, HTML | . | 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 | 2.23.00 | 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 2.0 Setup Information | INF | . | M | 2.23.00 | 3277 |
| 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 Raster Font | . | Y | H | 2.23.00 | 3248 |
| 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 Vector Font | . | Y | H | 2.23.00 | 3249 |
| 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 |
| Info- Zip Self Extracting Archive | EXE | Y | M | 2.22.00 | 3165 |
| Informed Filler Form (MacBinary) | IFM | . | M | 2.16.00 | 474 |
| Informed Filler Template (MacBinary) | ITP | . | M | 2.16.00 | 475 |
| Informed Interchange Document (MacBinary) | IIF | . | M | 2.16.00 | 476 |
| Informed Package Document (MacBinary) | 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 | 2.23.00 | 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 Self Extracting Archive | EXE | . | M | 2.22.00 | 3168 |
| 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 | 2.22.01 | 703 |
| Internet Message (MIME) | TXT, EML, MHT, MIM, MME, MIME | Y | H | 2.22.01 | 1262 |
| Internet Message (UU-Encoded) | TXT, EML | Y | H | 2.22.01 | 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 |
| Intuit Interchange Format Data | IIF | . | M | 2.23.00 | 797 |
| Intuity AUDIX Multimedia Message | LVP | . | M | 2.16.00 | 505 |
| Intuity AUDIX Multimedia Msg (MacBinary) | 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 | 2854 |
| iPhoto Image Attributes | ATTR | . | M | 2.20.00 | 2871 |
| IRCAM Audio Sample (Intel) | SF | . | M | 2.17.00 | 2587 |
| IRCAM Audio Sample (Motorola) | SF | . | M | 2.17.00 | 2588 |
| IRIT 3D Interchange Image | IRIT | . | M | 2.17.00 | 2542 |
| iSilo Document | . | . | M | 2.23.00 | 3283 |
| IslandDraw Image | . | . | M | 2.23.00 | 3255 |
| IslandWrite Document | . | . | M | 2.23.00 | 3254 |
| ISO 9660 CD-ROM Image (Data Mode 1) | ISO | . | M | 2.07.00 | 803 |
| iTunes Music Database | ITL | . | M | 2.19.02 | 2811 |
| IXimager Disk Image | ASB, IDIF, IRBF, IEIF | . | M | 2.21.00 | 2918 |
| J Wavelet Image Codec Bitmap | WIC | . | M | 2.08.00 | 1685 |
| Jacksum Meta-Info Hash Code List | JACKSUM | . | M | 2.07.00 | 1489 |
| JAM Archive | JAM | . | M | 2.22.00 | 3114 |
| Jamcracker Tracker Module Music | JAM | . | M | 2.17.00 | 2578 |
| Janome NH10000 Sewing Machine Stitch F | JEF | . | M | 2.11.00 | 2021 |
| Japan Crossword Dmitry Torshin Format | JCC | . | M | 2.10.00 | 1882 |
| JAR Compressed Archive | JAR | . | M | 2.07.00 | 1430 |
| JARCS Compressed Archive | JAR | . | M | 2.07.00 | 1431 |
| Java 2 MIDI Sound Bank | GM | Y | M | 2.06.00 | 1340 |
| Java Applet Cache Index | IDX | . | M | 2.18.00 | 1867 |
| Java Application Descriptor | JAD | . | M | 2.19.02 | 2813 |
| Java Archive | JAR, ZIP, BASE, MZP | Y | M | 2.12.01 | 1432 |
| Java Class (Compiled) | CLASS, CLA, CLS | . | M | 2.03.09 | 343 |
| Java Manifest | MF | . | M | 2.10.00 | 1909 |
| Java Midlet | RMS | . | M | 2.16.00 | 2474 |
| Java Runtime Environment Certification | . | . | M | 2.07.00 | 1421 |
| Java Runtime Environment Time Zone Inf | . | . | M | 2.07.00 | 1418 |
| Java Runtime Environment Time Zone Map | . | . | M | 2.07.00 | 1419 |
| Java Script Source Code File | JS, ASP, HTM, HTML, HTT, HTC, ASPX, ASCX | . | H | 2.23.00 | 401 |
| Java Serialized Object | SER | . | M | 2.12.03 | 440 |
| Java Server Page | JSP, JS | . | M | 2.22.00 | 813 |
| Java Shared Archive | JSA | . | M | 2.18.00 | 1948 |
| Java Source Code File | JAVA, HTM | . | M | 2.13.00 | 418 |
| Javacard API Export File | EXP | . | M | 2.14.00 | 2333 |
| JAWS for Windows Script | JSB | . | M | 2.07.00 | 1386 |
| JBIG Raster Bitmap | JBG | . | M | 2.08.00 | 1657 |
| Jeff's Image Format Bitmap | JIF | . | M | 2.08.00 | 1658 |
| Jerusalem (B) VIRUS! | COM | . | M | 1.00.00 | 151 |
| Jet-VoiceMail Audio | CVF | . | M | 2.21.00 | 2991 |
| Jetico Encrypted Archive | BCA | . | M | 2.08.00 | 1572 |
| JFile Database | . | . | M | 2.23.00 | 3284 |
| JFile Pro Database | . | . | M | 2.23.00 | 3285 |
| Jigsaw Game | JIG | . | M | 2.10.00 | 1883 |
| Jill of the Jungle Data File | JN1 | . | L | 2.00.00 | 812 |
| Job Layout Language Image | JLYT | . | M | 2.16.00 | 2472 |
| Jose SciEditor Project | SPF | . | M | 2.11.00 | 2041 |
| Journey To The Center Of The Earth Archive | 0000 | . | M | 2.15.00 | 632 |
| Jovian Logic Video Capture File | VI | Y | M | 1.00.00 | 184 |
| JPEG File Interchange File | JPEG, JFIF, JPG, JFI, CMP, JIF, THM, JPE | Y | H | 2.19.00 | 185 |
| JPEG File Interchange File (MacBinary) | JPEG, JFIF, JPG, JFI, CMP, JIF, J, JPE | . | M | 2.16.00 | 1733 |
| JPEG File Interchange File + MAC Resource Fork | JPG | Y | H | 2.19.00 | 1332 |
| JPEG Network Graphic Bitmap | JNG | Y | H | 2.19.00 | 1659 |
| JPEG-2000 Bitmap Image | JP2, JPG2, JPX, MJ2, MJP2, JPM, J2K | . | M | 2.06.00 | 1294 |
| JPEG-2000 Bitmap Image (MacBinary) | JP2, JPG2, JPX, MJ2, MJP2, JPM | . | M | 2.16.00 | 509 |
| JPEG-2000 Code Stream Bitmap | JPC | Y | M | 2.14.00 | 1660 |
| Jrchive Compressed Archive | JRC | . | M | 2.08.00 | 1612 |
| JungUm Office Document | GUL | Y | H | 2.17.00 | 2510 |
| Jupiter Ace Snapshot | ACE | . | M | 2.15.00 | 711 |
| Jupiter Ace Tape | TAP | . | M | 2.11.00 | 2052 |
| Karaoke MIDI File | KAR | . | L | 2.00.00 | 815 |
| Karbon Document | KARBON | Y | H | 2.21.00 | 2475 |
| Kaspersky Anti-virus Toolkit Database | AVC | . | M | 2.20.00 | 2872 |
| Kaspersky Anti-virus Toolkit Key | KEY | . | M | 2.17.00 | 817 |
| KazaA Playlist | KPL | . | M | 2.10.00 | 1887 |
| KBOOM Compressed Archive | . | . | M | 2.08.00 | 1613 |
| KChart Document | CHRT | Y | H | 2.21.00 | 2476 |
| KDE Configuration | . | . | M | 2.16.00 | 2429 |
| KDE Desktop Entry | . | . | M | 2.16.00 | 2428 |
| KDE Konqueror Browser Cookie | . | . | M | 2.23.00 | 3302 |
| Kettley Publishing App. Template | MLH | . | M | 2.14.00 | 2214 |
| Kettley Publishing Report Template | KPF | . | M | 2.14.00 | 2213 |
| Kexis Lossless Compressed Audio | KXS | . | M | 2.09.00 | 1713 |
| Keyboard Script Layout | KBD | . | M | 2.17.00 | 541 |
| Keyboard System Driver | SYS | . | M | 2.00.00 | 1216 |
| Keynote Data | KNT | . | M | 2.07.00 | 1490 |
| KFormula Document | KFO | Y | H | 2.21.00 | 2477 |
| KGB Archiver Compressed Archive | KGB | . | M | 2.15.00 | 2372 |
| Khoros Visualization Image | VIFF, XV, VIF | Y | M | 2.15.00 | 1119 |
| KiSS Paper Doll File | CEL | . | M | 2.17.00 | 614 |
| Kivio Document | FLW | Y | H | 2.21.00 | 2478 |
| Kodak Color Management System Profile | TOL, ICC | . | M | 2.21.00 | 1094 |
| Kodak Digital Postcard File | KIZ | . | L | 2.00.00 | 819 |
| Kodak Photo CD Image | PCD | . | H | 2.16.00 | 932 |
| Kodak Photo CD overview pack | OPA | . | M | 2.22.00 | 3053 |
| Kodak Photo Enhancer Image | KDC | . | L | 2.00.00 | 816 |
| Kodak Precision Color Management System | PT | . | M | 2.07.00 | 1394 |
| Kodak YCC Printer Image | ICC, YCC | . | M | 2.12.00 | 788 |
| KoFax Group 4 Facsimile Image | KFX | . | L | 2.00.00 | 818 |
| Kolbe Test Results | ART | . | M | 2.06.00 | 1323 |
| Konica Quality Picture Natv Camera Img | KQP | . | L | 2.00.00 | 822 |
| Kontour Document | KON | Y | H | 2.21.00 | 2479 |
| Korg Trinity KeyMaP File | KMP | . | L | 2.00.00 | 821 |
| Korg Trinity Sound Sample | KSF | . | M | 2.22.00 | 824 |
| KPresenter Document | KPR, KPT | Y | H | 2.21.00 | 2480 |
| Kretz JPEG Picture | V00 | Y | M | 2.06.00 | 1318 |
| KSpread Document | KSP | Y | H | 2.21.00 | 2481 |
| Kurzweil 2000 Sample | KR1, KRZ | . | M | 2.06.00 | 823 |
| Kurzweil 2500 Sample | K25 | . | M | 2.22.00 | 814 |
| KWord Document / Template | KWD, KWT | Y | H | 2.21.00 | 2482 |
| Kye Game Data | KYE | . | M | 2.03.06 | 825 |
| LA Lossless Compressed Audio | LA | . | M | 2.08.00 | 1701 |
| Label Factory Deluxe Install File | INS | . | M | 2.14.00 | 2229 |
| Label Factory Deluxe Job | JOB, PMJ | . | M | 2.14.00 | 2226 |
| Label Factory Deluxe Style | STY | . | M | 2.14.00 | 2230 |
| Label Factory Deluxe Template | TPL, ORG | . | M | 2.14.00 | 2228 |
| LabVIEW Binary Datalog | DAT | . | M | 2.21.00 | 2999 |
| LABView Virtual Instrument | VI | . | M | 2.17.00 | 1117 |
| Laplink Exchange Agent | LLX | . | L | 2.00.00 | 837 |
| Larc Archive | LZS, LZH | . | M | 1.00.00 | 52 |
| Larc Self Extracting Archive | COM | . | M | 1.00.00 | 35 |
| Larc Self Extracting Archive | EXE | . | M | 1.00.00 | 78 |
| LDAP Data Interchange Format | LDIF | . | M | 2.19.02 | 2814 |
| Legacy Document | LEG | . | M | 2.19.00 | 831 |
| Legal Hash Database(s) Match (Bad) | . | Y | H | 2.07.00 | 1369 |
| Legal Hash Database(s) Match (Good) | . | Y | H | 2.07.00 | 1368 |
| LegglessMusicEditor Sound/Module | LME | . | M | 2.10.00 | 1893 |
| Lego Image | LIF | . | M | 2.23.00 | 3313 |
| Letraset Image | RIFF | . | L | 2.00.00 | 1012 |
| LGLZ Compressed DOS Program | COM | . | M | 2.10.00 | 1815 |
| LHarc Compressed Archive | LHA, LZH, LHn, LZn, LHD, LZS | . | M | 2.22.00 | 50 |
| LHarc Self Extracting Archive | COM, EXE | . | M | 1.00.00 | 36 |
| LHarc Self Extracting Archive | EXE | . | M | 1.00.00 | 80 |
| LHarc Self Extracting Archive (C64) | . | . | M | 2.08.00 | 1595 |
| License Package | LPK | . | M | 2.07.00 | 1469 |
| LightWave 3D FPBM Image | FPBM | Y | H | 2.18.00 | 2275 |
| LightWave 3D Layered Object | LWLO | Y | H | 2.23.00 | 3244 |
| LightWave 3D Object | LWOB, LWO | Y | H | 2.18.00 | 845 |
| LightWave 3D Scene | LWSC, LWS | Y | H | 2.18.00 | 847 |
| Lightwave Normal Map | NMF | . | M | 2.10.00 | 1927 |
| Limit Compressed Archive | LIM | . | M | 2.22.00 | 1614 |
| Link Notebook File | LNB, ANB | Y | H | 2.17.00 | 1238 |
| Linksys Router Configuration Backup | BIN | . | M | 2.18.00 | 763 |
| Linux Compressed ROM File System (CRAMFS) (Intel) | . | . | M | 2.22.00 | 3136 |
| Linux Compressed ROM File System (CRAMFS) (Motorola) | CMG | . | M | 2.21.00 | 2973 |
| Linux ext2/ext3/ext4 File System Disk Image | . | . | M | 2.22.00 | 3132 |
| Linux Journalled Flash File System 2 Image (JFFS2) | . | . | M | 2.22.00 | 3142 |
| Linux Journalled Flash File System Image (JFFS,Intel) | . | . | M | 2.22.00 | 3139 |
| Linux Journalled Flash File System Image (JFFS,Motorola) | . | . | M | 2.22.00 | 3140 |
| Linux Kernel Boot Image | . | . | M | 2.22.00 | 3102 |
| Linux Swap File (Intel) | . | . | M | 2.22.00 | 3101 |
| Linux Unified Key Setup Encrypted File | . | . | M | 2.22.00 | 3087 |
| Liquid Audio File | LQT | . | M | 2.09.00 | 1715 |
| Liquid Tracker Song/Module | LIQ | . | M | 2.10.00 | 1891 |
| List File (Unknown Source) | LST | . | L | 1.05.00 | 544 |
| List Machine Image | LISPM, LISP | . | M | 2.14.00 | 835 |
| ListPro Database | CLF | . | M | 2.21.00 | 2964 |
| LOB Compressed Archive | LOB | . | M | 2.18.00 | 2644 |
| Lode Runner Puzzle Set | PZL | . | M | 1.00.00 | 227 |
| Log File (Unknown Source) | LOG | . | L | 2.09.00 | 660 |
| Logger Pro Data | CMBL | . | M | 2.21.00 | 2970 |
| Logitech Desktop Messenger User Profile | DAT, BAK | . | M | 2.18.00 | 605 |
| Logitech Entertainment System | LES, REG | . | L | 2.00.00 | 832 |
| Logitech RSA Crypto Key | TXT | . | M | 2.18.00 | 1146 |
| Longest Journey, The Sound | ISS, XARC | . | M | 2.09.00 | 1712 |
| Lossless Predictive Audio Compression | PAC, LPAC | . | M | 2.08.00 | 1363 |
| Lotus 123 File | APC, APD, APF, ASD, RI | . | M | 2.03.06 | 97 |
| Lotus 123 File | XLT | . | M | 1.00.00 | 102 |
| Lotus 123 Font | FNT, LRF | . | M | 1.00.00 | 96 |
| Lotus 123 Ver. 1 & 2 Worksheet | WK1 | . | M | 1.00.00 | 104 |
| Lotus 123 Ver. 1 Worksheet | WKS | . | M | 1.00.00 | 106 |
| Lotus 123 Ver. 3 & 4 Worksheet | WK3, WK4, 123, 12M | . | M | 2.07.00 | 105 |
| Lotus 123 Ver. 3 Format File | FM3 | . | M | 2.07.00 | 1433 |
| Lotus 123 Ver. 4 Format File | FMT | . | M | 2.07.00 | 1434 |
| Lotus 123 Worksheet (MacBinary) | 123, WK1, WK3, WK4 | . | M | 2.16.00 | 2483 |
| Lotus Approach Document | APR, MPR | Y | H | 2.19.00 | 2512 |
| Lotus Approach Index | ADX | . | M | 2.07.00 | 1435 |
| Lotus CC:Mail Box | CCM | . | L | 2.00.00 | 609 |
| Lotus Freelance Graphics 97 File | PRZ, DGM, SMC, MAS, SYM, PRE | . | M | 2.08.04 | 976 |
| Lotus Freelance Graphics Smartmaster Look | MAS | . | H | 2.19.00 | 858 |
| Lotus Freelance Presentation | PRE | . | M | 2.19.00 | 973 |
| Lotus Manuscript Document | . | . | M | 2.19.00 | 2745 |
| Lotus Notes Database Storage Facility | NS2, NSF, NTF, NDL, NS#, NSG, NSH | . | M | 2.13.05 | 900 |
| Lotus Notes Full Text Index | FT | . | L | 2.00.00 | 745 |
| Lotus Notes Internal Clipboard | NCF | . | L | 2.00.00 | 891 |
| Lotus Organiser Paper Layout Definition | PLT | . | M | 2.19.00 | 954 |
| Lotus Organiser Report | REP | . | M | 2.11.00 | 2007 |
| Lotus Organizer File | ORG, OR2, OR3 | . | M | 2.19.00 | 916 |
| Lotus Picture | PIC | . | M | 2.12.00 | 2143 |
| Lotus Symphony Spreedsheet | WR1, WRK | . | L | 2.00.00 | 1154 |
| Lotus Word Pro 96/97 Document | LWP, MWP | . | M | 2.23.00 | 846 |
| Lotus Word Pro 97 Smartmaster | MWP | . | L | 2.00.00 | 889 |
| Lotus Works Document | DOC | . | M | 2.19.00 | 2761 |
| Low Bitrate Packer Compressed Audio | LB | Y | M | 2.09.00 | 1714 |
| Low Level Virtual Machine Bytecode | BC | . | M | 2.20.00 | 2879 |
| Low Level Virtual Machine Bytecode (Compressed) | BC | . | M | 2.20.00 | 2880 |
| LU Archive | LBR | . | M | 1.00.00 | 51 |
| Lucas Arts Animation | NUT, SAN | . | M | 1.00.00 | 69 |
| Lucas Arts Living Book | . | . | M | 1.00.00 | 72 |
| Lucas Arts Sound (SAD) | SAD | Y | H | 1.00.00 | 70 |
| Lucas Arts Sound (SOU) | SOU | Y | H | 1.00.00 | 71 |
| LuraDocument Format Image | LDF | . | M | 2.13.00 | 693 |
| LuraWave Format Image | LWF | . | M | 2.08.00 | 1661 |
| Lyra MIDI Music | LYR | . | M | 1.00.00 | 108 |
| LZA Animation/Video | LZA | . | M | 2.12.00 | 2103 |
| LZexe Self Extracting Archive | EXE | . | M | 1.00.00 | 79 |
| LZMA Compressed Archive | LZMA | . | M | 2.19.02 | 2815 |
| lzop Compressed Archive | LZO | . | M | 2.08.00 | 1615 |
| LZS221 Archive | LZS | . | M | 2.22.00 | 3069 |
| LZX Archive | LZX | . | M | 2.14.00 | 471 |
| Mac Draw Image (MacBinary) | . | . | M | 2.09.00 | 1768 |
| Mac Draw Pro Image (MacBinary) | MDP | . | M | 2.09.00 | 1769 |
| Mac OS X Code Signing Requirement | . | . | M | 2.23.00 | 3208 |
| Mac OS X Detached Code Signature | . | . | M | 2.23.00 | 3198 |
| Mac OS X Installer (MacBinary) | DIST, DISTZ, PKG, MPKG | . | M | 2.16.00 | 2459 |
| Mac OS X Keychain Database | . | . | M | 2.23.00 | 3206 |
| Mac PICT Image (MacBinary) | PCT, PIC | Y | M | 2.03.18 | 293 |
| MacBinary (Mac Data + Resource Fork) | MAC | Y | H | 2.15.00 | 13 |
| Machine Independent File Format Image | MIFF, MIF | . | M | 2.18.00 | 873 |
| Macintosh Alias (MacBinary) | . | . | M | 2.09.00 | 1786 |
| Macintosh Bitmap Display Font (MacBinary) | . | . | M | 2.09.00 | 1029 |
| Macintosh Control Panel (MacBinary) | . | . | M | 2.09.00 | 1781 |
| Macintosh Desk Accessory (MacBinary) | . | . | M | 2.09.00 | 1789 |
| Macintosh Desktop Database | . | . | M | 2.06.00 | 951 |
| Macintosh Disk Image | DMF, DMG | . | M | 2.03.06 | 1245 |
| Macintosh Disk Image (MacBinary) | DMF, DMG | . | M | 2.09.00 | 1801 |
| Macintosh Extension (MacBinary) | . | . | M | 2.09.00 | 1782 |
| Macintosh Finder (MacBinary) | . | . | M | 2.09.00 | 1783 |
| Macintosh Font Suitcase (MacBinary) | . | . | M | 2.09.00 | 1784 |
| Macintosh IFF Picture | . | Y | H | 2.23.00 | 3250 |
| Macintosh Keyboard Layout (MacBinary) | . | . | M | 2.09.00 | 1791 |
| Macintosh Program (MacBinary) | . | . | M | 2.13.00 | 1731 |
| Macintosh QuickDraw/PICT Image | PCT, PIC, PICT, PICT2, QTS | Y | H | 1.03.00 | 172 |
| Macintosh Resource File (MacBinary) | RSR | . | M | 2.13.00 | 1788 |
| Macintosh Shared Library (MacBinary) | . | . | M | 2.09.00 | 1787 |
| Macintosh Sound (MacBinary) | . | . | M | 2.09.00 | 1792 |
| Macintosh Sound + Resource Fork | SND, HCO | Y | M | 2.03.18 | 17 |
| Macintosh System File (MacBinary) | . | . | M | 2.09.00 | 1780 |
| Macintosh System Suitcase (MacBinary) | . | . | M | 2.09.00 | 1785 |
| Macintosh True Type Font (MacBinary) | TTF | . | M | 2.09.00 | 1790 |
| MacPaint Bitmap | PNT, MAC, MPNT, MACP, PNTG, PAINT | . | M | 2.18.00 | 966 |
| MacPaint Bitmap (MacBinary) | MAC, MPNT, MACP, PNTG, PAINT, PNT | Y | M | 2.03.18 | 284 |
| Macro Media Director File | DCR | . | H | 2.18.01 | 285 |
| Macromedia Direct Locked Cast Resource | CXT | . | L | 2.00.00 | 645 |
| Macromedia Director Movie | DIR | . | M | 2.03.06 | 526 |
| Macromedia Director Movie (Intel) | DXR, DIR | . | M | 2.04.00 | 271 |
| Macromedia Director Movie (MacBinary) | DIR | . | M | 2.09.00 | 1752 |
| Macromedia Director Movie (Macintosh) | DXR, CXT | . | H | 2.17.00 | 169 |
| Macromedia Director Resrcs (MacBinary) | SKL | . | M | 2.09.00 | 1067 |
| Macromedia Extra Program Extension | X16, X32 | . | L | 2.00.00 | 1157 |
| Macromedia Flash MX Shared Object Library | SOL | . | M | 2.10.00 | 435 |
| Mactive AdBase Data | CDB | . | M | 2.21.00 | 2948 |
| MacWrite Document (MacBinary) | . | . | M | 2.21.00 | 1762 |
| MacWrite II (MacBinary) | . | . | M | 2.16.00 | 2448 |
| MacWrite II Document (MacBinary) | . | . | M | 2.09.00 | 1753 |
| MacWrite II Model (MacBinary) | . | . | M | 2.09.00 | 1754 |
| MacWrite Pro Document (MacBinary) | . | . | M | 2.09.00 | 1751 |
| Madtracker Music Module | MTI, MT2 | . | M | 2.17.00 | 2268 |
| Madtracker Pattern | MTP | . | M | 2.17.00 | 2581 |
| MainActor Project | MPF | . | M | 2.11.00 | 450 |
| MakeTZX ZX Spectrum Tape Image | TZX | . | M | 2.11.00 | 2067 |
| MAME Compressed Hard Disk Image | CHD | . | M | 2.23.00 | 3234 |
| Manchester Scene Description Language | MSDL | . | M | 2.00.00 | 885 |
| Manual Page Output | MAN | . | L | 2.00.00 | 855 |
| MapBrowser/MapWriter Vector Map | CBD | . | M | 2.21.00 | 2942 |
| MapInfo Map | MAP | . | M | 2.00.00 | 1196 |
| MapInfo Spatial Table | TAB | . | M | 2.11.00 | 2051 |
| MapInfo Workspace | WOR | . | M | 2.12.00 | 2127 |
| MapSource GPS Mapping Interface | MPS | . | M | 2.10.00 | 1913 |
| MapSource GPS Waypoint Database | GDB | . | M | 2.17.00 | 2517 |
| MAR Archive | MAR | . | M | 2.22.00 | 3057 |
| MASS-11 Export Document | . | . | H | 2.19.00 | 2746 |
| MASS-11 Native Document | . | . | H | 2.19.00 | 2747 |
| Massive Development Package Archive | PAK | . | M | 2.07.00 | 1501 |
| Material Exchange Format File | MXF | . | M | 2.10.00 | 1921 |
| Material Exchange Format File (MacBinary) | MXF | . | M | 2.16.00 | 2450 |
| MathCaD Document | MCD | . | M | 2.10.00 | 1898 |
| MathVision Matrix | . | Y | H | 2.18.00 | 2633 |
| Matrix Spreadsheet | MTX | . | M | 2.19.00 | 2769 |
| Matroska Video Stream | MKV, MKA, MKAV | . | M | 2.10.00 | 1899 |
| MAUD Audio Sample | MAUD | Y | H | 2.18.00 | 2586 |
| Max Payne Data | MPS, MP2S | . | M | 2.11.00 | 1975 |
| Max Payne Saved Game | MPS, MP2S | . | M | 2.11.00 | 1914 |
| MaxBlast Language Translation | LNG | . | M | 2.06.00 | 1295 |
| MaxBlast Localized Menu | BIN | . | M | 2.10.00 | 1951 |
| Maya 3D Image (binary) | ma | . | M | 2.14.00 | 2273 |
| Maya 3D model (ascii) | ma | . | M | 2.14.00 | 2289 |
| MBX Mail Folder | MBX | . | M | 2.22.00 | 3050 |
| McAfee Firewall Log/Database | edb, elog, xdb | . | M | 2.07.00 | 1382 |
| McAfee Firewall Neotrace Locations | LOCA, LOC | . | M | 2.07.00 | 1389 |
| McAfee Firewall Settings | idx, ini | . | M | 2.11.00 | 2080 |
| McAfee Personal Firewall Data | MPF | . | M | 2.11.00 | 2081 |
| McAfee VirusScan Olympus Database | DAT | . | M | 2.11.00 | 2085 |
| McAfee VirusScan Quarantined File | MCQ | . | M | 2.06.00 | 1299 |
| McAfee VirusScan Update | UPM | . | M | 2.11.00 | 2092 |
| McIDAS System Satellite Image | GOE, GOES | . | M | 2.08.00 | 1654 |
| MCrypt 2.2 Encrypted Data | . | Y | M | 2.23.00 | 3100 |
| MCrypt 2.5 Encrypted Data | . | Y | M | 2.23.00 | 3099 |
| MDCD Compressed Archive | MD | . | M | 2.22.00 | 1617 |
| MDL 3d Image (Binary) | MDL | . | M | 2.17.00 | 2543 |
| MDL 3d Image (Text) | MDL | . | M | 2.17.00 | 2544 |
| Media Container Format File | MCF | . | M | 2.10.00 | 1900 |
| Media Descriptor CD Image Index | MDS | . | M | 2.10.00 | 1907 |
| Media Direct Configuration | KC | . | M | 2.18.00 | 663 |
| Media Player Classic (MPC) Playlist | MPCPL | . | M | 2.19.02 | 2818 |
| Media Safe Encrypted Data | ENC | . | M | 2.19.00 | 2797 |
| MediaZip Compressed Archive | MZF | . | M | 2.08.00 | 1619 |
| Medical Biosignals Data | EBS | . | M | 2.18.00 | 2673 |
| Medical Waveform Description | MWF | . | M | 2.16.00 | 2484 |
| Medical Waveform Description (MacBinary) | MWF | . | M | 2.16.00 | 2485 |
| MedlySound Sound Module | MSO | . | M | 2.10.00 | 1917 |
| Micro Focus Generated Code | GNT | . | L | 2.00.00 | 765 |
| MicroDesign Area Image | MDA | . | M | 2.08.00 | 1663 |
| MicroDesign Page Image | MDP | . | M | 2.08.00 | 1664 |
| Micrognosis Compressed Archive | MCA | . | M | 2.08.00 | 1616 |
| Micrografx Designer Drawing | DRW, GRF | . | M | 2.08.04 | 62 |
| Micrografx Designer Image | DS4, DSF | . | M | 2.07.00 | 681 |
| Micrografx Picture | PIC | . | M | 1.00.00 | 63 |
| Microsoft Installer Self Extracting Archive | EXE | . | M | 2.22.00 | 3163 |
| Microsoft Mail Email Message | EML, TXT | Y | H | 2.22.01 | 545 |
| Microsoft Multimedia Viewer File | MVB | . | L | 2.00.00 | 888 |
| Microsoft Network (MSN) Archive | MAR | . | M | 2.06.00 | 1343 |
| Microsoft Network (MSN) Data | DAT | . | M | 2.06.00 | 1344 |
| Microsoft Network Document | MSN | . | L | 2.00.00 | 886 |
| Microsoft Outlook 2000 IMO Email Message | EML, TXT | Y | H | 2.22.01 | 574 |
| Microstation CAD Drawing | DGN | . | M | 2.22.00 | 674 |
| Microstation v8 CAD Drawing (OLE) | DGN | Y | H | 2.23.00 | 3275 |
| Midi Sample Dump Standard (comp) | SDX | . | L | 2.00.00 | 1053 |
| Midi Sample Dump Standard (raw) | SDS | . | L | 2.00.00 | 1049 |
| Midi Sequencer Music (MacBinary) | MID | . | M | 2.09.00 | 1794 |
| Midtown Madness 3 Data | CDDS | . | M | 2.21.00 | 2949 |
| Mighty Draw DOS Library | MDL | . | M | 2.10.00 | 1905 |
| MightyFax File | APF | . | M | 2.20.00 | 2864 |
| Mikmod Module Music | UNI | . | M | 2.17.00 | 2585 |
| Milestones Project | MLS | . | M | 2.19.00 | 2736 |
| MilkShape 3D Model | MS3D | . | M | 2.14.00 | 2292 |
| MIME Base64 Archive | B64 | . | M | 2.09.01 | 482 |
| MIME HTML Web Page Archive | MHT, EML, HTM, MAFF, MHTML | Y | H | 2.22.01 | 1910 |
| Mindmaper MindManager File | MMP | . | L | 2.00.00 | 878 |
| MindRender VREK Object | ODT | . | M | 2.07.00 | 1500 |
| Miner Descent/D2 Level Extension | LVL | . | L | 2.00.00 | 843 |
| Minolta Diamage Raw Image | MRW | . | M | 2.10.00 | 1916 |
| MIO Compressed Audio | MIO | . | M | 2.07.00 | 1532 |
| MIPS Archive | . | . | M | 2.23.00 | 3213 |
| Mitsubishi Color Sublimation Printer Image | MITSU | . | M | 2.17.00 | 875 |
| MKS Source Integrity File | USE | . | L | 2.00.00 | 1108 |
| MKS Source Integrity Project Use | TRN | . | L | 2.00.00 | 1099 |
| MLP Audio Stream (Intel) | MLP | . | M | 2.16.00 | 498 |
| MLP Audio Stream (Motorola) | MLP | . | M | 2.16.00 | 497 |
| MNI Mandelbrot for Windows File | MND, MNI | . | L | 2.00.00 | 880 |
| Mobile XMF Music | MXMF | . | M | 2.16.00 | 494 |
| Mobile XMF Music (MacBinary) | MXMF | . | M | 2.16.00 | 495 |
| MobileDB Database | . | . | M | 2.23.00 | 3286 |
| Mobipocket eBook | . | . | M | 2.23.00 | 3297 |
| Modern ListGeo Output Image | LGO | . | M | 2.10.00 | 1889 |
| Modular Sound File | FTM | Y | M | 1.00.00 | 317 |
| Monarch Graphic Image | MGF | . | M | 2.17.00 | 870 |
| Monkey's Audio Image Link | APL | . | M | 2.15.00 | 2366 |
| Monkey's Lossless Compressed Audio | APE | . | M | 2.08.00 | 1697 |
| Monster Bash Data File | MB1 | . | L | 2.00.00 | 861 |
| MoPaQ Archive | MPQ | . | M | 2.22.00 | 3117 |
| Moray Wireframe Model | MDL | . | M | 2.10.00 | 1906 |
| Morrowind: The Elder Scrolls Plug-in | . | . | M | 2.10.00 | 1846 |
| Mosaic Hot List | HOT | . | M | 1.00.00 | 310 |
| Motif Icon File | UIL | . | L | 2.00.00 | 1105 |
| Movie Collector Catalog | MVC | . | M | 2.19.02 | 2819 |
| Moxcel Spreadsheet | MXL | . | M | 2.19.00 | 2770 |
| MOZART Music Document | MZ | . | M | 2.10.00 | 1922 |
| Mozilla Address Book | MAB | . | M | 2.19.02 | 2817 |
| Mozilla Archive | MAR | . | M | 2.15.00 | 857 |
| Mozilla Browser Extension Package | XPI | . | H | 2.16.03 | 2511 |
| MPEG 2 Transport Stream | MP2T, MPEG | . | M | 2.16.00 | 2424 |
| MPEG 4 Animation | MP4, MPEG, MPG4 | . | M | 2.16.00 | 2423 |
| MPEG 4 Animation (MacBinary) | MP4, MPEG, MPG4 | . | M | 2.16.00 | 2449 |
| MPEG Animation | MPG, MPEG, MPE, M1V, ENC, MPA, MPS, M2V | Y | H | 2.19.00 | 246 |
| MPEG Animation (MacBinary) | MPG, MPEG, MPE, M1V, ENC, MPA | . | M | 2.09.00 | 1750 |
| MPEG Music File (+ID3v1 Tags) | MP3, MP2, MPGA | Y | H | 2.19.00 | 349 |
| MPEG Music File (+ID3v2 Tags) | MP3, MP2, MPGA | Y | H | 2.19.00 | 1239 |
| MPEG Music File (MacBinary) | MP3, MP2, MPGA | . | M | 2.09.00 | 1749 |
| MPEG-4 Audio Lossless Coding Standard | ALS | . | M | 2.15.00 | 948 |
| MrSID Image | SID | . | M | 2.21.00 | 2920 |
| MS .NET Framework Library Design Object | LDO | . | M | 2.07.00 | 1387 |
| MS .NET Resource Schema/Template (XML) | RESX | . | H | 2.15.04 | 2180 |
| MS 3D Pinball Data | DAT | . | M | 2.06.00 | 1347 |
| MS Access Blank Database Template | MDN | . | L | 2.00.00 | 866 |
| MS Access Database | MDE | . | L | 2.00.00 | 865 |
| MS Access Database Project | ADP | Y | H | 2.22.00 | 483 |
| MS Access Database Template (Open XML) | ACCDT | Y | H | 2.21.00 | 2396 |
| MS Access Database Wizard Template | MDZ | Y | H | 2.17.00 | 327 |
| MS Access Database/Template/Addition | MDB, MDT, MDA, MDE, DPM, WCD, MDW, SBC | . | M | 2.11.00 | 330 |
| MS Access Database/Wizard | ACC, ACCDU, ACCDE, ACCDA, ACCDB | . | M | 2.15.00 | 522 |
| MS Access Form | MAF | . | L | 2.00.00 | 852 |
| MS Access Lock File | LDB | . | M | 2.10.03 | 829 |
| MS Access Macro | MAM | . | L | 2.00.00 | 854 |
| MS Access Menu File | MNU | . | L | 1.05.00 | 548 |
| MS Access Module | MAD | . | L | 2.00.00 | 851 |
| MS Access Query | MAQ | . | L | 2.00.00 | 856 |
| MS Access Report / Snapshot | RPT, SNP | Y | H | 2.17.00 | 1521 |
| MS Access Report Snapshot (Compressed) | SNP | . | H | 2.07.01 | 1560 |
| MS ActiveMovie Graph File | GRF | Y | H | 2.17.00 | 769 |
| MS Agent/Assistant Character | ACS, ACG, ACF | Y | H | 2.17.00 | 1207 |
| MS Album Media Database | ABM | . | M | 2.06.00 | 1268 |
| MS Album Media Scene | SCN | . | M | 2.06.00 | 1351 |
| MS Application Profile Settings | PIP | . | M | 2.13.00 | 1179 |
| MS Audio/Visual Interleave (Intel) | AVI, VFW | Y | H | 2.11.00 | 234 |
| MS Audio/Visual Interleave (Motorola) | AVI, VFW | Y | H | 2.17.00 | 2599 |
| MS Briefcase Database | . | . | M | 1.05.00 | 394 |
| MS C# Source Code | CS | . | M | 2.23.00 | 1808 |
| MS C#.NET Project | CSPROJ, USER, CSDPROJ | . | M | 2.23.00 | 554 |
| MS Channel Definition Format | CDF-MS, CDF | . | M | 2.17.02 | 2618 |
| MS Chat Animated Character | AVB | . | M | 1.05.00 | 389 |
| MS ClipArt Gallery | CAG | Y | H | 2.17.00 | 328 |
| MS CodeView Information Screen | CV | . | L | 2.00.00 | 642 |
| MS Compatibility Database | CAT | . | M | 1.05.00 | 360 |
| MS Compiled Toolbar Menu | CTM | . | M | 2.12.00 | 1945 |
| MS Compound Document (OLE) | OBD, PPT, DOC, XLS | Y | H | 2.17.00 | 274 |
| MS Compress 5.0 Archive | ??$, ??_, ?_, IBT | . | M | 2.18.00 | 2667 |
| MS Compress 6.22 Archive | ??$, ??_, ?_, IBT | . | M | 2.18.00 | 2666 |
| MS Compress Archive | ??$, ??_, ?_, IBT | . | M | 2.17.00 | 47 |
| MS Cryptographic URL Metadata | . | . | M | 2.10.00 | 1940 |
| MS Data Transformation Services | DTS | Y | H | 2.17.00 | 2194 |
| MS Datamap Data | DAT | . | M | 2.00.00 | 1226 |
| MS Datamap Index | ID | . | M | 2.00.00 | 1181 |
| MS Datamap Index | IND | . | M | 2.00.00 | 1205 |
| MS Debug Information File | DBG | . | M | 1.04.01 | 345 |
| MS Dependency File | DEP | . | M | 2.03.06 | 404 |
| MS Developer Studio Macro | DSM | . | M | 2.13.00 | 683 |
| MS Developer Studio Project File | DSP, DBP | . | M | 1.05.00 | 411 |
| MS Developer Studio Workspace | DSW | . | M | 2.17.00 | 424 |
| MS Developer Studio Workspace Options | OPT | Y | H | 2.17.00 | 914 |
| MS DevStudio Resource Script | . | . | M | 1.05.00 | 384 |
| MS Dial-up Networking Export | DUN | . | M | 2.00.00 | 689 |
| MS Digital Rights Management License Store | HDS | . | M | 2.21.00 | 3017 |
| MS DirectMusic Style | STY | . | H | 2.07.00 | 1471 |
| MS DirectMusic Support File | TPJ, TPL, PER, CDM | . | M | 2.13.00 | 1220 |
| MS DOS Code Page Information/Font | CPI | . | M | 2.03.06 | 88 |
| MS DOS Help | HLP | . | M | 1.00.00 | 209 |
| MS Download File Index | SFC, SF0 | . | M | 2.07.00 | 425 |
| MS Dr. Watson Memory Dump | DMP, HDMP, MDMP | . | M | 2.13.00 | 1284 |
| MS Dr. Watson User Dump | DMP | . | M | 2.14.00 | 2232 |
| MS Draw Palette | PAL | . | M | 1.00.00 | 220 |
| MS Encarta Document | EWL | . | L | 2.00.00 | 707 |
| MS Event Log | EVT | . | M | 2.13.00 | 1185 |
| MS Excel Chart | XLC | Y | H | 2.19.00 | 109 |
| MS Excel Graph | GRA | Y | H | 2.17.00 | 768 |
| MS Excel Macro | XLM | Y | H | 2.19.00 | 110 |
| MS Excel Spreadsheet (MacBinary) | XLS | . | M | 2.09.00 | 1766 |
| MS Excel Spreadsheet (Open XML) | XLSX, XLSM, XLAM, XLTX | Y | H | 2.21.00 | 2209 |
| MS Excel Spreadsheet (Open XML,Binary) | XLSB | Y | H | 2.21.00 | 2626 |
| MS Excel Spreadsheet (XML) | XML, XLS, HTM | Y | H | 2.22.00 | 1248 |
| MS Excel Worksheet/Add-In/Template (OLE) | XLS, XLA, XLT, XLB, WWS | Y | H | 2.22.00 | 111 |
| MS Excel Workspace/Workbook | XLW | Y | H | 2.19.00 | 195 |
| MS Exchange Settings | RWZ | . | M | 2.00.00 | 1186 |
| MS Exchange Shortcut/Link | XNK | . | M | 2.22.00 | 1164 |
| MS Exchange/Outlook Offline Storage | OST | . | M | 2.12.00 | 920 |
| MS Expedia Streets 98 Push-Pins | GPD | . | M | 2.14.00 | 2215 |
| MS Expression 3 Graphic Image | XPR | . | M | 2.12.00 | 2131 |
| MS Expression 3 Skeletal Strokes | SKS | . | M | 2.11.00 | 2035 |
| MS Fast Find Index | FFA, FFL, FFO, FFX | . | M | 2.10.00 | 720 |
| MS Find Saved Search | FND | . | M | 1.01.00 | 257 |
| MS Font File | FNT | . | M | 2.19.00 | 2801 |
| MS Forms Cache | DAT | . | M | 2.18.00 | 1202 |
| MS Foundation Classes (MFC) Hierarchy | HIE | . | M | 2.13.00 | 2176 |
| MS Foundation Classes (MFC) Wizard | CLW | . | M | 2.06.00 | 901 |
| MS FoxPro Class Library | VCT, VCX | . | L | 2.00.00 | 1116 |
| MS FoxPro Form | SCX | . | L | 2.00.00 | 1041 |
| MS FoxPro Labels | LBT, LBX | . | L | 2.00.00 | 828 |
| MS FoxPro menus | MNT, MNX | . | L | 2.00.00 | 882 |
| MS FoxPro menus (compiled) | MPR | . | L | 2.00.00 | 883 |
| MS FoxPro Program File | PRG | . | L | 1.05.00 | 553 |
| MS FoxPro Report File | FRT, FRX, PJT, MNT, LBT | . | M | 2.00.00 | 741 |
| MS Groove System Store | XSS, XSSR | . | M | 2.21.00 | 3019 |
| MS Groove System Store Log | XSSLOG | . | M | 2.21.00 | 3021 |
| MS Hellbender Saved Game | HEL | . | L | 2.00.00 | 777 |
| MS Help 2 Attributes (XML) | HXA | . | H | 2.13.00 | 2171 |
| MS Help 2 Collection (XML) | HXC | . | H | 2.13.00 | 2172 |
| MS Help 2 Keyword Index (XML) | HXK | . | H | 2.13.00 | 2170 |
| MS Help 2 Merged Keyword Index | HXW, HXH, HXD, ITS, HXQ, HXR, EIT | . | M | 2.18.00 | 1944 |
| MS Help 2 Table of Contents (XML) | HXT | . | H | 2.13.00 | 2173 |
| MS Help Compiler Phrase Table | PH | . | L | 2.00.00 | 943 |
| MS Hover Maze Data | MAZ | . | L | 2.00.00 | 860 |
| MS HTML Help Collection | COL | . | M | 2.21.00 | 2979 |
| MS HTML Help Index | CHS | . | M | 2.12.00 | 1278 |
| MS HyperTerminal Shortcut | HT | . | M | 1.00.00 | 312 |
| MS IIS RSA Crypto Machine Key | . | . | M | 2.00.00 | 1176 |
| MS Image Color Matching Profile | ICM, ICC, CC, PF | . | M | 2.22.00 | 337 |
| MS Image Composer File | MIC | . | L | 2.00.00 | 871 |
| MS InfoPath Document (XML) | XML | Y | H | 2.19.04 | 2843 |
| MS InfoPath Dynamic Form/Template | XSN | . | H | 2.19.04 | 2842 |
| MS Internet Connect Wizard (MacBinary) | ICW | . | M | 2.09.00 | 1775 |
| MS Internet Database Connector Documen | IDC | . | M | 2.00.00 | 1199 |
| MS Internet Explorer Cache | DAT | . | M | 1.00.00 | 103 |
| MS Internet Explorer Connection Wizard | ICW, PBK | . | M | 2.03.06 | 419 |
| MS Internet Explorer Shortcut (MacBinary) | URL | . | M | 2.09.00 | 1776 |
| MS Internet Inquiry File | IQY | . | M | 2.00.00 | 802 |
| MS ISAM Database | DB, MNY | . | M | 2.07.00 | 1330 |
| MS J# Source Code | JSL | . | M | 2.15.00 | 2394 |
| MS Language Character Set | NLS, NLP | . | M | 2.18.00 | 354 |
| MS Language Web Cache | . | . | M | 2.00.00 | 1182 |
| MS Linker Database | ILK | . | M | 2.15.00 | 369 |
| MS Management Console | MSC | Y | H | 2.17.00 | 2199 |
| MS Management Console Snap-in Control | MSC | . | M | 2.09.00 | 1711 |
| MS Media Connect Persistent Data | TXT | . | M | 2.10.00 | 1954 |
| MS MIDI Instrument Definition (Intel) | IDD, IDF | . | H | 2.07.00 | 792 |
| MS MIDI Instrument Definition (Motorola) | IDD, IDF | . | H | 2.17.00 | 2267 |
| MS Midi Musical Instrument Song (Intel) | RMI | Y | H | 1.00.00 | 311 |
| MS Midi Musical Musical Instrument Song (Motorola) | RMI | . | H | 2.17.00 | 2270 |
| MS Money Data | MNY, MN? | . | M | 1.00.00 | 45 |
| MS Money Support File | CSM | . | M | 2.07.00 | 1381 |
| MS Multi-Media Movie | MMM | Y | H | 1.00.00 | 324 |
| MS Network Driver Protocol Support | SX, SY, P | . | M | 2.07.00 | 1472 |
| MS Network Shortcut | MCC | Y | H | 2.17.00 | 237 |
| MS NT Operating System Loader | . | . | M | 2.00.00 | 1193 |
| MS Office Binder Document/Template/Wizard | OBD, OBT, OBZ, BIN | Y | H | 2.23.00 | 326 |
| MS Office Clip Art | MMC | . | M | 2.00.00 | 1192 |
| MS Office Data (Open XML) | XLSX, DOCX, PPTX, XLSM, DOCM, PPTM, ???X | Y | H | 2.21.00 | 2207 |
| MS Office Document (XML) | XML, HTM | Y | H | 2.03.07 | 1247 |
| MS Office FAX Cover Page | CVP | . | M | 2.06.00 | 1282 |
| MS Office Imaging Language File | LNG, SHP, LC | . | M | 2.12.00 | 1296 |
| MS Office Macro Reference (OLE) | MSO | . | H | 2.17.01 | 591 |
| MS Office Macro Reference (RAW) | MSO | . | M | 2.17.00 | 596 |
| MS Office Outlook 2003 Email Message | EML, TXT | Y | H | 2.22.01 | 571 |
| MS Office Profile Settings | OPS | . | M | 2.07.00 | 1408 |
| MS Office Saved Search | OSS | . | L | 2.00.00 | 919 |
| MS Office/Publisher Border | BDR | . | M | 2.06.00 | 1208 |
| MS OLE Object Library | OLB | . | L | 2.00.00 | 911 |
| MS Operating System Localization DB | nnn | . | M | 2.07.00 | 1553 |
| MS Outlook Add-In Extensions Database | DAT | . | M | 2.11.00 | 2086 |
| MS Outlook Address Book | OAB | . | M | 2.19.02 | 1178 |
| MS Outlook AutoComplete File | NK2 | . | M | 2.18.00 | 1300 |
| MS Outlook Email Account Settings | IAF | . | M | 2.07.00 | 1372 |
| MS Outlook Express Email Folder | DBX | . | M | 2.13.00 | 1203 |
| MS Outlook Express Email Folder | MBX | . | M | 1.05.00 | 365 |
| MS Outlook Express Email Index | IDX | . | M | 1.05.00 | 366 |
| MS Outlook Express Email Message | EML, TXT | Y | H | 2.22.01 | 575 |
| MS Outlook Express Email Tree | NCH | . | M | 1.05.00 | 393 |
| MS Outlook Express Log | LOG | . | M | 2.03.06 | 623 |
| MS Outlook Express News Message | NWS | . | M | 2.22.00 | 457 |
| MS Outlook Form Template | OFT | Y | H | 2.17.00 | 909 |
| MS Outlook Message | MSG | Y | H | 2.19.03 | 148 |
| MS Outlook Navigation Bar | FAV | . | M | 2.00.00 | 713 |
| MS Outlook Personal Information Store (2003 - 2007) | PST | . | M | 2.18.01 | 2724 |
| MS Outlook Personal Information Store (97 - 2002) | PST | . | M | 2.18.01 | 336 |
| MS Outlook Remote Email | RHC | . | M | 2.03.06 | 1191 |
| MS Outlook Rich Text Formatted Message | EML, TNEF, DAT | . | H | 2.22.01 | 1811 |
| MS Outlook Send/Receive Settings | SRS | Y | H | 2.17.00 | 2204 |
| MS Package Definition File | PDF | . | M | 2.04.00 | 937 |
| MS Paint Bitmap | MSP | Y | M | 1.00.00 | 7 |
| MS PC Health Help Center Query | QUERY | . | M | 2.07.00 | 1395 |
| MS Personal Address Book | PAB | . | M | 2.13.00 | 335 |
| MS Phonebook | PBK | . | L | 2.00.00 | 929 |
| MS Picture It! Multilayer Picture | MIX | Y | H | 2.17.00 | 1358 |
| MS Pictures | PCS | Y | H | 2.17.00 | 329 |
| MS PipeLine Component File | PCF | Y | H | 2.17.00 | 1464 |
| MS Plotter Control Definition | PCD | . | M | 2.12.00 | 2147 |
| MS Pocket Access Database | CDB | . | M | 2.13.00 | 2157 |
| MS Pocket Excel Spreadsheet | PXL | . | M | 2.11.00 | 986 |
| MS Pocket Word Document | PWD | . | M | 2.11.00 | 983 |
| MS PocketPC Device Emulator | BIN | . | M | 2.18.00 | 619 |
| MS PowerPoint Presentation (Open XML) | PPTX, PPTM, POTX, PPSX | Y | H | 2.21.00 | 2210 |
| MS PowerPoint Slides (MacBinary) | PPT, PPA, POT, PPS | . | M | 2.09.00 | 1758 |
| MS PowerPoint Slides (XML) | PPT, PPS, XML, HTM | Y | H | 2.09.00 | 718 |
| MS PowerPoint Slides/Add-on (OLE) | PPT, PPA, POT, PPS | Y | H | 2.17.00 | 164 |
| MS PowerPoint Wizard | PWZ | Y | H | 2.17.00 | 985 |
| MS Print Spooler Shadow | SHD | . | M | 2.10.00 | 1946 |
| MS Private Key | PVK | . | M | 2.11.00 | 2000 |
| MS Profiler Output | PRF | . | M | 2.18.00 | 622 |
| MS Project File | MPP | Y | H | 2.17.00 | 348 |
| MS Project File (ANSI) | MPX | . | M | 2.03.09 | 1253 |
| MS Proofing/Language Dictionary | LEX, DAT, SVE, NLD, FRA, DEU, THS | . | M | 2.13.00 | 1184 |
| MS Publisher Document | PUB | . | H | 2.17.00 | 1356 |
| MS Publisher Job Submission Publication | JSP | Y | H | 2.17.00 | 127 |
| MS Publisher Wizard Template | POC | . | M | 2.06.00 | 1304 |
| MS Quarter-Inch Cartridge Backup Set | QIC | . | M | 2.11.00 | 992 |
| MS Query | QRY | . | L | 2.00.00 | 995 |
| MS Query Database | DBF | . | M | 1.00.00 | 65 |
| MS Query Database Index | MDX | . | M | 2.18.00 | 68 |
| MS QuickBASIC Source Code | BAS | . | M | 2.19.00 | 2782 |
| MS Reader Ebook (EBO) | EBO | . | M | 2.07.00 | 1482 |
| MS Reader Ebook (LIT) | LIT | . | M | 2.10.00 | 1892 |
| MS Recorder Macro | REC | . | L | 2.00.00 | 1009 |
| MS Recycled Files | . | . | M | 2.00.00 | 1177 |
| MS RegMaid Document | RMD | . | L | 2.00.00 | 1016 |
| MS Repository Information Model | RDM | . | M | 2.07.00 | 1552 |
| MS Rich Text Format Document | RTF, DOC, WRI, WBK | Y | H | 2.15.00 | 269 |
| MS Rich Text Format Document (Mac) | RTF | Y | H | 2.23.00 | 3299 |
| MS Rich Text Format Document (MacBinary) | RTF, DOC, WRI, WBK | . | M | 2.09.00 | 1756 |
| MS Scan Configuration File | RVP | . | L | 2.00.00 | 1025 |
| MS ScanDisk/CHKDSK Fragment File | CHK | . | L | 1.05.00 | 452 |
| MS Schedule+ Event | SCH | . | M | 2.14.00 | 2234 |
| MS Schedule+ Schedule | SC2, SCD | . | L | 2.00.00 | 1031 |
| MS Search Log | TMP | . | M | 2.18.00 | 628 |
| MS Search System Index | 000 | . | M | 2.18.00 | 661 |
| MS Setup File | STF | . | M | 2.06.00 | 1314 |
| MS Setup Package | PKG | . | M | 2.03.06 | 953 |
| MS Software Policies | POL | . | M | 2.19.00 | 1189 |
| MS Speech Recognition Engine Articles | ART | Y | H | 2.17.00 | 2198 |
| MS Speech Recognition Engine Data | AM, DLM, LXA, NGR, SMP | . | M | 2.06.00 | 1273 |
| MS Spell Checker Dictionary | DIC | . | M | 2.03.06 | 414 |
| MS Spell Checker Dictionary (MacBinary) | DIC | . | M | 2.09.00 | 1743 |
| MS Spell Checker Dictionary (Win95) | DIC | . | M | 2.17.00 | 2524 |
| MS Spelling Auto Correct List | ACL | . | M | 2.10.00 | 373 |
| MS SQL Server Database Tape Backup | BAK | . | H | 2.18.02 | 1463 |
| MS Step by Step Interactive Training | CBZ, LDZ | . | M | 2.06.00 | 1275 |
| MS Temporary Disk File | TDF | . | M | 2.10.00 | 1231 |
| MS Terminal File | TRM | . | M | 2.03.06 | 1098 |
| MS Tip of the Day File | TIP | . | M | 2.03.06 | 420 |
| MS TWAIN Device Temporary File | MTX | . | M | 2.13.00 | 1938 |
| MS Virtual Earth 3D Image | DAT | . | M | 2.23.00 | 3314 |
| MS Virtual PC Hard Disk Image | VHD | . | H | 2.14.00 | 2335 |
| MS Virtual PC Language Dictionary | DICT | . | M | 2.15.00 | 646 |
| MS Virtual Server Hard Disk Image | VHD | . | H | 2.17.00 | 579 |
| MS Visio 2 Document/Drawing/Shapes/Template | VSS, VSD, VST | . | M | 2.19.00 | 1132 |
| MS Visio 3/4 Document/Drawing/Shapes/Template | VSD, VSS, VST, VT | Y | H | 2.19.00 | 1130 |
| MS Visio Report Definition | VRD | . | H | 2.15.00 | 2393 |
| MS Visio Workspace File | VSW | . | L | 2.00.00 | 1133 |
| MS Visual Basic Active Document | VBD | Y | H | 2.17.00 | 1357 |
| MS Visual Basic Class Module | CLS | . | M | 2.03.06 | 510 |
| MS Visual Basic Custom Control | VBX | . | L | 2.00.00 | 1114 |
| MS Visual BASIC Form | FRM, CTL | . | M | 2.23.00 | 1223 |
| MS Visual BASIC Form Index | FRX | . | M | 2.18.00 | 1224 |
| MS Visual Basic Group Project | VBG | . | M | 2.07.00 | 1466 |
| MS Visual Basic Project | VBP | . | M | 2.07.00 | 1112 |
| MS Visual BASIC Script/Header | ASP, ASA, INC, BAS, ASPX, ASMX, ASAX, AS | . | M | 2.15.00 | 1225 |
| MS Visual BASIC Source Code | BAS, VB, VBS, ASPX, ASCX | . | H | 2.09.01 | 1214 |
| MS Visual Basic Workspace | VBW | . | M | 2.00.00 | 1113 |
| MS Visual Basic.NET Project | VBPROJ, USER | . | M | 2.13.00 | 679 |
| MS Visual Basic.NET Source Code | VB | . | M | 2.23.00 | 607 |
| MS Visual C Build Log | PLG | . | M | 2.00.00 | 1206 |
| MS Visual C Dependency File | DEP | . | M | 2.00.00 | 1200 |
| MS Visual C v1 Precompiled Header | PCH | . | M | 2.23.00 | 3262 |
| MS Visual C++ Compiled Resources | RES, APS, RCT | . | M | 1.05.00 | 402 |
| MS Visual C++ Debug File | SBR | . | M | 2.15.00 | 376 |
| MS Visual C++ Definition File | DEF | . | M | 2.13.00 | 355 |
| MS Visual C++ DLL Exports File | EXP | . | M | 2.14.00 | 368 |
| MS Visual C++ Interface Design Lang. | IDL | . | M | 2.03.06 | 426 |
| MS Visual C++ Object Description Lang. | ODL, IDL | . | M | 2.03.11 | 407 |
| MS Visual C++ Precompiled Header | PCH | . | M | 1.05.00 | 371 |
| MS Visual C++ Precompiled Header Cache | PCC | . | M | 2.06.00 | 1336 |
| MS Visual C++ Program Database | PDB, BSC, NCB, IDB | . | M | 2.09.00 | 423 |
| MS Visual C++ Registry Source | RGS | . | M | 2.13.00 | 422 |
| MS Visual C++ Resource Script | RC | . | M | 2.03.06 | 416 |
| MS Visual C++ Server Repsonse File | SRF | . | M | 2.15.00 | 2193 |
| MS Visual C++ Workbench Information | VCW | . | M | 2.19.00 | 2752 |
| MS Visual C++.NET Project | VCPROJ, USER | . | H | 2.13.00 | 2183 |
| MS Visual C++.NET Style Sheet | VCSTYLE | . | H | 2.13.00 | 2191 |
| MS Visual FoxPro Database | DBF | Y | H | 2.22.00 | 2762 |
| MS Visual Foxpro Project | PJT, PJX | . | L | 2.00.00 | 952 |
| MS Visual Interdev Cache | VIC, IMG | . | M | 2.07.00 | 535 |
| MS Visual J++ Project File | VJP | . | M | 2.07.00 | 1465 |
| MS Visual Source Safe Code Control | SCC | . | M | 2.13.00 | 1033 |
| MS Visual Studio Application Wizard | VSDIR | . | M | 2.13.00 | 2185 |
| MS Visual Studio Compiled Resource | RSC, RSR | . | M | 2.13.00 | 1312 |
| MS Visual Studio Help Context ID Map | HM | . | M | 2.13.00 | 2175 |
| MS Visual Studio Help Project | HPJ | . | M | 2.13.00 | 781 |
| MS Visual Studio Keyboard Template | VSK | . | M | 2.15.00 | 585 |
| MS Visual Studio Macro | VSMACRO, VSMACROS | . | H | 2.17.00 | 2197 |
| MS Visual Studio Package Project | PKP | . | M | 2.07.00 | 1468 |
| MS Visual Studio Project Template | VSTEMPLATE | . | M | 2.23.00 | 3310 |
| MS Visual Studio Properties | VSPROPS | . | H | 2.15.00 | 656 |
| MS Visual Studio Solution | SLN | . | M | 2.15.00 | 1467 |
| MS Visual Studio Solution User Options | SUO | Y | H | 2.17.00 | 2195 |
| MS Visual Studio Toolbox Data | TBD | . | M | 2.13.00 | 1949 |
| MS Visual Studio Wizard Configuration | VSZ | . | M | 2.13.00 | 2187 |
| MS Visual Studio.NET C# Incr. Build | INCR | . | M | 2.09.00 | 1806 |
| MS Visual Studio.NET C# Project Data | PROJDATA | . | M | 2.12.00 | 1807 |
| MS Visual Studio.NET Cache | CACHE, MAP | . | M | 2.17.00 | 2522 |
| MS Visual Studio.NET Compiled Resource | RESOURCES | . | M | 2.09.00 | 1804 |
| MS Visual Studio.NET DB Discovery | VSDISCO, DISCO | . | H | 2.15.00 | 1077 |
| MS Visual Studio.NET DB Discovery Map | MAP, DISCOMAP | . | H | 2.13.00 | 2178 |
| MS Visual Studio.NET Deployment Project | VDPROJ | . | M | 2.13.00 | 2184 |
| MS Visual Studio.NET Licenses | LICENSES | . | M | 2.12.00 | 503 |
| MS Visual Studio.NET Perform. Session | PSESS | . | M | 2.09.00 | 876 |
| MS Visual Studio.NET Project | CSPROJ, VBPROJ, USER, VBDPROJ, CSDPROJ, | . | M | 2.23.00 | 552 |
| MS Visual Studio.NET Src Safe Code Cnt | VSPSCC | . | M | 2.09.00 | 680 |
| MS Visual Studio.NET Strong Name Key | SNK, DAT, KEY | . | M | 2.12.00 | 1805 |
| MS Visual Studio.NET Web Information | WEBINFO | . | M | 2.09.00 | 1174 |
| MS Windows .NET Application Configuration | CONFIG, CFG, DEFAULT, CCH | . | H | 2.15.00 | 2189 |
| MS Windows .NET Library (32 bit) | DLL, TLB, OCX, CPL, HX? | Y | H | 2.18.00 | 2686 |
| MS Windows .NET Library (64 bit) | DLL, TLB, OCX, CPL, HX? | Y | H | 2.18.00 | 2685 |
| MS Windows .NET Program (32 bit) | EXE, SCR, MOD, SYS, BIN, COM | Y | H | 2.18.00 | 2682 |
| MS Windows .NET Program (64 bit) | EXE, SCR, MOD, SYS, BIN, COM | Y | H | 2.18.00 | 2683 |
| MS Windows 3.1 True Type Font | TTF | . | M | 1.00.00 | 221 |
| MS Windows 3.x Logo | LGO | . | M | 1.00.00 | 252 |
| MS Windows 3.x Screen Grabber | 2GR, 3GR | Y | H | 2.03.10 | 222 |
| MS Windows 3.x Screen Saver | SCR | Y | H | 2.03.10 | 294 |
| MS Windows 3.x System Font | FON, FOT | Y | H | 2.03.10 | 297 |
| MS Windows 95 Password List File | PWL | . | M | 1.05.00 | 304 |
| MS Windows Address Book | WAB, WA~ | . | M | 2.19.00 | 341 |
| MS Windows Animated Cursor (Intel) | ANI, CON | Y | H | 1.00.00 | 308 |
| MS Windows Animated Cursor (Motorola) | ANI, CON | . | H | 2.17.00 | 2262 |
| MS Windows Application Log | DTC | . | M | 2.06.00 | 1286 |
| MS Windows Application Usage Log | LGC, LGD, LGG | . | M | 2.07.00 | 1374 |
| MS Windows Audio Converter | ACM | Y | H | 2.03.10 | 295 |
| MS Windows Backup Utility Tape Image | BAK, BKF | . | M | 2.18.02 | 2727 |
| MS Windows Bitmap | BMP, DIB, SYS, RLE, BIN, VGA, RLn | Y | M | 2.18.00 | 5 |
| MS Windows Bitmap (MacBinary) | BMP, DIB, SYS, RLE, BIN, VGA, RLn | . | M | 2.09.00 | 1778 |
| MS Windows Cabinet Archive | CAB, PKG, ??Z, ??_, GDP | . | M | 2.07.00 | 99 |
| MS Windows Cabinet Archive (MacBinary) | CAB, PKG, ??Z, ??_, GDP | . | M | 2.16.00 | 2487 |
| MS Windows Cabinet Installer Self Extracting Archive | EXE | . | M | 2.22.00 | 3170 |
| MS Windows Calendar | CAL | Y | M | 1.00.00 | 165 |
| MS Windows Card File (Win 3.x) | CRD | . | M | 2.14.00 | 2321 |
| MS Windows Card File (Win NT) | CRD | Y | M | 1.00.00 | 117 |
| MS Windows CB Data File | CBD | . | M | 2.00.00 | 1187 |
| MS Windows CE Cabinet Archive | CAB | . | M | 2.23.00 | 3259 |
| MS Windows Client Download Data | DAT | . | M | 2.10.00 | 1962 |
| MS Windows Clipboard/Picture | CLP | . | M | 2.08.00 | 196 |
| MS Windows CMU Manager Bitmap | CMU | . | M | 2.07.00 | 1549 |
| MS Windows Color Palette (Intel) | PAL | . | M | 1.00.00 | 320 |
| MS Windows Color Palette (Motorola) | PAL | . | H | 2.17.00 | 2263 |
| MS Windows Color Scheme | SCM | Y | H | 2.17.00 | 2202 |
| MS Windows COM+ Library | CLB, DAT, APL | . | M | 2.15.00 | 1198 |
| MS Windows Compatibility Solution Data | SDB | . | M | 2.23.00 | 627 |
| MS Windows Compiled Resources | RES | . | M | 1.00.00 | 225 |
| MS Windows Control Panel Applet | CPL, DLL, EXE | Y | H | 2.03.10 | 296 |
| MS Windows Cue Cards | CUE | . | M | 2.06.00 | 432 |
| MS Windows Cursor | CUR | Y | H | 2.14.00 | 302 |
| MS Windows Desktop Theme | THEME | . | M | 2.06.00 | 361 |
| MS Windows Desktop Theme Elements | ELM | . | M | 2.10.00 | 1289 |
| MS Windows Disk Map File | DMF | . | M | 1.00.00 | 136 |
| MS Windows Driver (16 bit) | DRV, DLL, VBX | Y | H | 2.03.10 | 292 |
| MS Windows Driver (16 bit) | EXE, VXD, SYS, DRV, 386 | Y | H | 2.03.10 | 290 |
| MS Windows Enhanced Metafile | EMF, TMP, WMF | . | M | 2.07.00 | 702 |
| MS Windows Error Mini Dump | DMP | . | M | 2.14.00 | 2231 |
| MS Windows Event Cache | BIN | . | M | 2.11.00 | 2078 |
| MS Windows Explorer Command File | SCF | . | M | 2.15.00 | 1035 |
| MS Windows Fax Cover Page | CPE, CPD, COV | . | M | 2.13.00 | 98 |
| MS Windows Fax Cover Page (compiled) | CVR, SQM | . | M | 2.13.00 | 2162 |
| MS Windows Font Cache Index | . | . | M | 2.07.00 | 377 |
| MS Windows Help Answer Wizard | AW | . | M | 2.06.00 | 374 |
| MS Windows Help Contents Table | CNT | . | M | 1.00.00 | 53 |
| MS Windows Help File | HLP, GID, LHP | . | M | 2.19.02 | 115 |
| MS Windows Help Full Text Search | FTS, FTG | . | M | 2.10.00 | 372 |
| MS Windows Help Module | CHM, CHI, CHQ, CHW, SLL | . | M | 2.00.00 | 338 |
| MS Windows Help Text Search | TSC | . | M | 1.05.00 | 370 |
| MS Windows Icon | ICO | Y | H | 2.14.00 | 114 |
| MS Windows Icon Cache Database | DB | . | M | 2.11.00 | 1329 |
| MS Windows Installer Package / Wizard | MSI, MST, DAT, MSM, WID, WIM | Y | H | 2.17.00 | 1211 |
| MS Windows Internet Shortcut | URL, MIM, ULK | . | M | 2.00.00 | 140 |
| MS Windows Journal | JNT | . | M | 2.17.02 | 2616 |
| MS Windows Library (16 bit) | DLL, DRV, VBX, EXE | Y | H | 2.03.10 | 291 |
| MS Windows Library (32 bit) | DLL, TLB, OCX, CPL, HX? | Y | H | 2.03.10 | 325 |
| MS Windows Library (64 bit) | DLL, TLB, OCX, CPL, HX? | Y | H | 2.18.00 | 2684 |
| MS Windows Live Contacts | WIN, ADDRESSBOOK, MECONTACT | . | M | 2.21.00 | 3020 |
| MS Windows Media Active Streaming File | WMV, WMA, ASF, ASR, DVR-MS | . | H | 2.19.00 | 1259 |
| MS Windows Media Catalog Database | WMDB | . | M | 2.18.00 | 2723 |
| MS Windows Media Compressed Database | WMDB | . | M | 2.18.00 | 2722 |
| MS Windows Media Database | WMDB, BIN, SDF | . | M | 2.06.00 | 1319 |
| MS Windows Media Player Play List | ASX | . | M | 2.17.00 | 2602 |
| MS Windows Media Player Playlist | WPL | . | M | 2.19.03 | 2841 |
| MS Windows MetaFile (placeable) | WMF, APM | . | M | 2.19.00 | 230 |
| MS Windows Movie Maker Project | MSWMM | Y | H | 2.17.00 | 2200 |
| MS Windows Netmon Capture | CAP | . | M | 2.07.00 | 1449 |
| MS Windows Network Service Performance Data | DAT | . | M | 2.18.00 | 601 |
| MS Windows NT System Driver | SYS | . | M | 2.00.00 | 1204 |
| MS Windows Office Toolbar Button | TBB | . | M | 1.04.01 | 339 |
| MS Windows OLE Type Library | TLB, TWD, OLB | . | M | 2.11.00 | 100 |
| MS Windows Password List | PWL | . | M | 2.10.00 | 93 |
| MS Windows Performance Monitor Chart | PMC | . | M | 2.13.00 | 2156 |
| MS Windows Policy | POLICY, MAN | . | H | 2.15.00 | 299 |
| MS Windows Prefetch Cache | PF | . | M | 2.03.06 | 18 |
| MS Windows Printer Driver | WPD | . | M | 1.00.00 | 253 |
| MS Windows Profile System File | DAT, LOG, ADR | . | M | 2.19.00 | 1232 |
| MS Windows Program (16 bit) | EXE, MOD, BIN | Y | H | 2.03.10 | 288 |
| MS Windows Program (32 bit) | EXE, SCR, MOD, SYS, BIN, COM | Y | H | 2.03.10 | 77 |
| MS Windows Program (64 bit) | EXE, SCR, MOD, SYS, BIN, COM | Y | H | 2.18.00 | 2681 |
| MS Windows Program (WIN386) | EXE | . | H | 2.03.10 | 289 |
| MS Windows Program Group | GRP, GRB | Y | M | 1.00.00 | 113 |
| MS Windows Program Information | PIF | Y | H | 1.05.00 | 116 |
| MS Windows Registry Hive | DAT, DA0, SAV | . | M | 2.00.00 | 101 |
| MS Windows Registry Import File | REG, DAT, SUD | . | M | 2.09.00 | 313 |
| MS Windows Registry Log | LOG | . | M | 2.00.00 | 1237 |
| MS Windows Script File | WSF | . | H | 2.15.00 | 2192 |
| MS Windows Security Catalog | CAT | . | M | 2.10.00 | 1233 |
| MS Windows Security Configuration Data | SDB, EDB | . | M | 2.03.06 | 1195 |
| MS Windows Security Credential History | . | . | M | 2.11.00 | 1936 |
| MS Windows Security Credentials | . | . | M | 2.11.00 | 2087 |
| MS Windows Shortcut/Link | LNK | . | M | 2.14.00 | 314 |
| MS Windows Sound Mix | MIX | . | M | 1.00.00 | 254 |
| MS Windows Swap File | SWP | . | L | 1.05.00 | 350 |
| MS Windows System Event Log | LOG, ALT, LO_ | . | M | 2.04.00 | 1236 |
| MS Windows True Type Font | TTF | . | M | 2.06.00 | 357 |
| MS Windows Upgrade Patch | MSP | Y | H | 2.17.00 | 1361 |
| MS Windows Vista Icon Cache Database | DB | . | M | 2.17.02 | 2617 |
| MS Windows Visual FoxPro Application | APP | . | M | 2.06.00 | 504 |
| MS Windows Visual Stylesheet (XML) | MANIFEST, MAN | . | H | 2.15.00 | 2177 |
| MS Windows Wave Sound (Intel) | WAV | Y | H | 2.06.00 | 166 |
| MS Windows Wave Sound (MacBinary) | WAV | . | M | 2.09.00 | 1737 |
| MS Windows Wave Sound (Motorola) | WAV | . | H | 2.17.00 | 2272 |
| MS Windows Welcome Bitmap | WBM | . | M | 2.06.00 | 391 |
| MS Word Add-In | WLL, WWL | . | L | 2.00.00 | 1149 |
| MS Word Document (Open XML) | DOCX, DOCM, DOTX, DOTM | Y | H | 2.21.00 | 2208 |
| MS Word Document (XML) | XML, DOC, HTM, HTML | Y | H | 2.03.07 | 1249 |
| MS Word Exclusion Dictionary | EXC | . | L | 2.00.00 | 708 |
| MS Word for DOS Font | DAT | . | M | 1.00.00 | 121 |
| MS Word for DOS Printer Definition | PRD | . | M | 1.00.00 | 118 |
| MS Word for DOS Style Sheet | STY | . | M | 1.00.00 | 119 |
| MS Word for DOS/Macintosh Document | DOC | Y | H | 1.00.00 | 217 |
| MS Word for DOS/WordPerfect Font | US?, R8? | . | M | 1.00.00 | 120 |
| MS Word for Mac Document (MacBinary) | MCW, DOC | . | M | 2.09.00 | 1761 |
| MS Word for Macintosh Document | MCW, DOC | Y | M | 2.21.00 | 216 |
| MS Word for OS/2 Document | DOC | . | M | 2.19.00 | 2763 |
| MS Word for Windows Document (OLE) | DOC, DOT, WIZ, WZS, WRI, WBK | Y | H | 2.19.00 | 229 |
| MS Word for Windows Document (pre-OLE) | DOC, DOT, WIZ, WZS, WRI, WBK | Y | M | 2.19.00 | 2738 |
| MS Word Printer Definition (MacBinary) | PRD | . | M | 2.09.00 | 1763 |
| MS Word Template (MacBinary) | DOT | . | M | 2.09.00 | 1760 |
| MS Word/Publisher Wizard | WIZ | . | L | 2.00.00 | 1147 |
| MS Works Database (MacBinary) | WDB | . | M | 2.09.00 | 1740 |
| MS Works Database (OLE) | WDB, DB | Y | H | 2.19.00 | 567 |
| MS Works Database 2 for Mac | DB, DB2 | . | M | 2.21.00 | 3009 |
| MS Works Database 2 for Windows/DOS | WDB | . | M | 2.21.00 | 3005 |
| MS Works Database 3 for Mac | DB, DB3 | . | M | 2.21.00 | 3008 |
| MS Works Database 3 for Windows | WDB | . | M | 2.21.00 | 3006 |
| MS Works Database Wizard | WWD, WDB | Y | H | 2.17.00 | 2392 |
| MS Works Document (MacBinary) | WPS | . | M | 2.09.00 | 1742 |
| MS Works for DOS Document | WPS, WWP | Y | H | 2.19.00 | 134 |
| MS Works for Mac 2 Document | WP2 | . | M | 2.19.00 | 2759 |
| MS Works for Mac 3 Document | WP | . | M | 2.19.00 | 2758 |
| MS Works for Mac 4 Database/Doc/Sheet (OLE) | DB4, WP4, SS4 | Y | H | 2.19.00 | 2757 |
| MS Works for Windows 3 Document (OLE) | WPS, WWP | Y | H | 2.19.00 | 2624 |
| MS Works Portfolio | WSB | . | H | 2.17.00 | 1140 |
| MS Works Spreadsheet (MacBinary) | WKS | . | M | 2.09.00 | 1741 |
| MS Works Spreadsheet (OLE) | WLR | Y | H | 2.18.00 | 2625 |
| MS Works Spreadsheet 2 for Mac | SS2, SS | . | M | 2.21.00 | 3010 |
| MS Works Spreadsheet 2 for Windows/DOS | WKS | . | M | 2.21.00 | 3007 |
| MS Works Spreadsheet 3 for Mac | SS3, SS | . | M | 2.21.00 | 3011 |
| MS Works Spreadsheet for DOS | WKS | . | M | 2.21.00 | 2125 |
| MS Write / Word Backup | WRI, WBK, TMP, DOC | Y | H | 2.17.00 | 1136 |
| MS Write Document | WRI | Y | H | 1.00.00 | 215 |
| MS XBox 360 Program | XEX | . | M | 2.11.00 | 1972 |
| MS XBox Program | XBE | . | M | 2.11.00 | 1973 |
| MSN Application Extension | NAV | . | H | 2.17.00 | 580 |
| MSN Messenger Data | DAT | . | M | 2.03.06 | 626 |
| MSN Messenger Saved Contact List | CTT | . | M | 2.21.00 | 2988 |
| MSX DOS Disk Image | DSK | . | M | 2.10.00 | 1829 |
| MTL Material Library | MTL | . | M | 2.17.00 | 2546 |
| MTV Movie | AMV | Y | H | 2.18.00 | 2699 |
| MTV Video | MTV | . | M | 2.17.00 | 887 |
| Mujahideen Secrets 2 | ENC | . | M | 2.21.00 | 2925 |
| Multi-Image Network Graphics Animation | MNG | . | H | 2.23.00 | 881 |
| MultiMate Document | PAT, DOC, DOX | . | H | 2.19.00 | 122 |
| Multimedia Email Message | ME3 | . | M | 2.10.00 | 1908 |
| Multimedia Fusion File | CCA | . | M | 2.21.00 | 2947 |
| MultiTracker Module Music | MTM | Y | M | 1.00.00 | 245 |
| Musepack Audio | MPC | . | M | 2.07.00 | 1535 |
| Music Studio File | MSS, STY | . | M | 1.00.00 | 124 |
| Music Studio Sound | SND | . | M | 1.00.00 | 123 |
| Musician I File | NOT | . | M | 1.00.00 | 125 |
| Musicline Module Music | ML | . | M | 2.17.00 | 2579 |
| MusicMatch Theme File | MMZ | . | M | 2.10.00 | 1129 |
| Musicmatch Visual Slide Show | MVS | . | M | 2.06.00 | 1354 |
| MusicTime/Doom Sound | MUS | . | M | 2.10.00 | 1920 |
| Mutt Email Message | EML, TXT | Y | H | 2.22.01 | 546 |
| MyDVD Style Template | DVD | . | M | 2.06.00 | 1287 |
| MySQL Database Index | MYI | . | M | 2.11.00 | 1974 |
| MySQL Generic Database Dictionary | FRM | . | M | 2.15.00 | 2387 |
| MythTV NuppelVideo | NUV | Y | M | 2.23.00 | 3197 |
| Nadeo Games File Format | GBX | . | M | 2.10.00 | 1853 |
| Nancy Codec Video | NOA | . | M | 2.12.00 | 2106 |
| Nanoscope File | NAN | . | L | 2.00.00 | 890 |
| NASA Planetary Data Systems Image | PDS, IMG | . | M | 2.17.00 | 938 |
| NaShrink Archive | NSK | . | M | 2.14.00 | 472 |
| National Imagery Transmission Format Image v1.0 | NITF, NTF, NSIF | . | M | 2.22.00 | 897 |
| National Imagery Transmission Format Image v2.x | NTF, NITF | . | M | 2.22.00 | 2930 |
| National Transfer Format Map | NTF | . | M | 2.10.00 | 1931 |
| Natural Language Processing Rule | RUL | . | M | 2.18.00 | 597 |
| Navy Interchange File Format Image | NIFF | . | M | 2.16.00 | 2415 |
| Nawk Programming Languaget | NAWK, GAWK, AWK | . | M | 2.16.00 | 2408 |
| Nazgul Compiled Message Catalog | . | . | M | 2.22.00 | 3095 |
| NCSA Interactive Color Raster Image | ICR | . | M | 2.17.00 | 791 |
| Need for Speed: Underground Audio | ABK | . | M | 2.09.00 | 1716 |
| Nendo 3D Low-Polygon Modeler | NDO | . | L | 2.00.00 | 892 |
| NeoChrome Animation | ANI | . | M | 2.07.00 | 1517 |
| NeoChrome Bitmap Image | NEO | Y | M | 2.12.00 | 893 |
| Nero CD/DVD Image | NRG | . | M | 2.19.02 | 2821 |
| Nero ISO CD-ROM Compilation | NRI | . | M | 2.15.00 | 2386 |
| Nero Media Player Skin | NPS | . | M | 2.15.00 | 2399 |
| Nero Wave Editor Preset | PRE | . | M | 2.18.00 | 603 |
| NeroVision Express Project | NVC | . | M | 2.10.00 | 1932 |
| NetBoot Disk Image | . | . | M | 2.22.00 | 3127 |
| NetCDF CDL Metadata | CDL, NC, CDF | . | M | 2.21.00 | 2950 |
| NetFRAME MPEG 2 Animation | MPEG, MPG, MPE, ENC | . | M | 1.00.00 | 270 |
| NetImmerse Format File | NIF | . | M | 2.10.00 | 1925 |
| NetMail/3000 / DeskLink / MS92 File | . | . | M | 2.16.00 | 2486 |
| Netscape Browser Cookie | . | . | M | 2.23.00 | 3300 |
| Netscape Certificate/Security Database | DB, HST | . | M | 2.06.00 | 1328 |
| Netscape Communicator Address Book | NA2 | . | M | 2.07.00 | 436 |
| Netscape Folder Cache | SNM | . | M | 2.23.00 | 3264 |
| Netscape News/Mail Messages | SNM | . | M | 2.13.00 | 344 |
| Netscape v3 & v4 Address Book | NAB | . | M | 2.23.00 | 3263 |
| NetStumbler NS1 Log | NS1 | . | M | 2.10.00 | 1929 |
| NetWare Installation Start | INS | . | M | 1.00.00 | 83 |
| NetWare Loadable Module | NLM, LAN | . | M | 1.00.00 | 203 |
| Network Exchange Map | NTXMAP | . | M | 2.06.00 | 1301 |
| Network Monitor Capture | CAP | . | M | 2.21.00 | 2937 |
| NetXRay/SnifferPro Capture | CAP | . | M | 2.07.00 | 1450 |
| NeWS Bitmap Font | NEWS | . | M | 2.22.00 | 894 |
| NeWS Font Family | . | . | M | 2.22.00 | 3044 |
| Newton PDA Package Archive | . | . | M | 2.23.00 | 3205 |
| NeXT/Sun/UNIX Sound | AU, SND, SUN, NXT | Y | M | 1.15.00 | 265 |
| NeXT/Sun/UNIX Sound CCITT G.721 Raw 4 bit ADPCM | G721 | . | M | 2.22.00 | 753 |
| NeXT/Sun/UNIX Sound CCITT G.723 Raw 3 bit ADPCM | G723 | . | M | 2.22.00 | 754 |
| Nintendo Entertainment System ROM Image | NES | . | M | 2.11.00 | 2010 |
| Nintendo Entertainment System Sound | NSF, NSA | . | M | 2.14.00 | 1437 |
| Nintendo Game Cube Movie | . | Y | H | 2.23.00 | 3196 |
| NIST NSRL Hash Database | TXT, CSV | . | M | 2.07.00 | 1377 |
| NitPicker Backup Ipflow File | S | . | M | 2.11.00 | 2015 |
| Nokia 9210 Communicator Video | NIM | . | M | 2.16.00 | 523 |
| Nokia LogoManager Bitmap | NLM | . | M | 2.08.00 | 1665 |
| Nokia Operator (Manager) Logo Image | NOL | . | M | 2.08.00 | 1666 |
| Nokia Saved SMS Message | VMG | . | M | 2.19.03 | 2839 |
| Nomad II Voice | NVF | . | M | 2.09.00 | 1718 |
| Nonlinear Uniform Rational B-Spl | NURBS, TXT | . | L | 2.00.00 | 903 |
| Nortel Voice Block Sound (MacBinary) | VBK | . | M | 2.16.00 | 508 |
| Norton AntiVirus Live Advisor Preferences | VCPREF | . | M | 2.14.00 | 2216 |
| Norton AntiVirus Live Update Profile | USERPROFILE | . | M | 2.14.00 | 2218 |
| Norton Antivirus Log | LOG | . | M | 2.18.00 | 653 |
| Norton AntiVirus Quarantined File | . | . | M | 2.07.00 | 1120 |
| Norton AntiVirus Scan Data | DAT | . | M | 2.18.00 | 606 |
| Norton AntiVirus Scheduled Tasks | SCA, RUL, DAT | . | M | 2.18.00 | 2401 |
| Norton AntiVirus Update Session | LIVEREG, USERPROFILE | . | M | 2.14.00 | 2217 |
| Norton Disk Doctor Undo | DAT | . | M | 2.21.00 | 2931 |
| Norton Internet Security Definition | DAT | . | M | 2.18.00 | 1326 |
| Norton Internet Security Web Definitions | BIN | . | M | 2.18.00 | 616 |
| Norton Spam Definitions | MBK | . | M | 2.18.00 | 2400 |
| Norton Spam Filter Pattern | SPM | . | M | 2.18.00 | 666 |
| Norton Utilities Directory Tree | NCD | . | M | 1.00.00 | 272 |
| Norton Virus Definitions | DAT, KC, nnn | . | M | 2.18.00 | 1201 |
| Norton Virus Definitions (compressed) | . | . | H | 2.15.00 | 935 |
| Norton Virus Definitions Update | BIN | . | M | 2.18.00 | 598 |
| Norton Virus Definitions Update Certificate | DAT, BAK | . | M | 2.18.00 | 608 |
| Norton Virus Definitions Update Index | DAT | . | M | 2.18.00 | 600 |
| Norton Virus Definitions Update Information | INF | . | M | 2.18.00 | 610 |
| Notation Interchange File Frmt (Intel) | NIF, RMI | . | M | 2.14.00 | 2271 |
| Notation Interchng File Fmt (Motorola) | NIF, RMI | . | H | 2.17.00 | 1926 |
| Noteworthy Composer Song | NWC | . | M | 2.17.00 | 904 |
| Novel PerfectWorks Document | WPW | . | L | 2.00.00 | 1152 |
| Novell Archive | ??_ | . | M | 1.00.00 | 309 |
| Novell LANalyzer Capture | TR1 | . | M | 2.07.00 | 1441 |
| Novell Message File | MSG, DAT | . | M | 1.00.00 | 34 |
| Novell Print Definition File | PDF | . | M | 1.00.00 | 86 |
| NPack Archive | . | . | M | 2.22.00 | 3075 |
| NRV Archive | NRV | . | M | 2.22.00 | 3071 |
| NS/Elite Display Macro Object Path | MOP | . | M | 2.10.00 | 1912 |
| NTI CD&DVD-Maker Image | CDM | . | M | 2.21.00 | 2951 |
| Nullsoft Self Extracting Archive | EXE | . | M | 2.22.00 | 3169 |
| Nullsoft Streaming Video | NSV | . | M | 2.12.00 | 2107 |
| NVidia MIDI Instrument Bank | BNK | . | M | 2.07.00 | 1422 |
| NView Graphic Card Update Profile | TVP | . | M | 2.13.00 | 2155 |
| Nyquist Plug-in | NY | . | M | 2.10.00 | 1933 |
| Object Oriented Graphics Library: 4x4 Transformation | INST | . | M | 2.17.00 | 2557 |
| Object Oriented Graphics Library: 4x4 Transformations (Binary) | GRP, PRJ | . | M | 2.17.00 | 2559 |
| Object Oriented Graphics Library: Bezier (ASCII) | BBP, BEZ | . | M | 2.17.00 | 2549 |
| Object Oriented Graphics Library: Bezier (Binary) | BBP, BEZ | . | M | 2.17.00 | 2550 |
| Object Oriented Graphics Library: Mesh (ASCII) | MESH | . | M | 2.14.00 | 2291 |
| Object Oriented Graphics Library: Mesh (Binary) | MESH | . | M | 2.17.00 | 2548 |
| Object Oriented Graphics Library: Multiple 4x4 Transformations | GRP, PRJ | . | M | 2.17.00 | 2558 |
| Object Oriented Graphics Library: Objects (ASCII) | OFF | . | M | 2.17.00 | 2551 |
| Object Oriented Graphics Library: Objects (Binary) | OFF | . | M | 2.17.00 | 2552 |
| Object Oriented Graphics Library: Quadrilaterals (ASCII) | QUAD | . | M | 2.17.00 | 906 |
| Object Oriented Graphics Library: Quadrilaterals (Binary) | QUAD | . | M | 2.17.00 | 2547 |
| Object Oriented Graphics Library: Skeleton | SKEL | . | M | 2.17.00 | 2555 |
| Object Oriented Graphics Library: Sphere | SPH | . | M | 2.17.00 | 2556 |
| Object Oriented Graphics Library: Vectors (ASCII) | VECT | . | M | 2.17.00 | 2553 |
| Object Oriented Graphics Library: Vectors (Binary) | VECT | . | M | 2.17.00 | 2554 |
| Objective Caml Abstract Syntax Tree Implementation | . | . | M | 2.23.00 | 3271 |
| Objective Caml Abstract Syntax Tree Interface | . | . | M | 2.23.00 | 3272 |
| Objective Caml Executable | . | . | M | 2.23.00 | 3265 |
| Objective Caml Interface | CMI | . | M | 2.23.00 | 3266 |
| Objective Caml Library | CMA | . | M | 2.23.00 | 3268 |
| Objective Caml Native Library | CMXA | . | M | 2.23.00 | 3270 |
| Objective Caml Native Object | CMX | . | M | 2.23.00 | 3269 |
| Objective Caml Object | CMO | . | M | 2.23.00 | 3267 |
| Obsidium Project File | OPF | . | M | 2.11.00 | 1976 |
| OctaMED Tracker Module | MMD, MED | . | M | 1.00.00 | 318 |
| Octave Data (Intel) | . | . | M | 2.23.00 | 3273 |
| Octave Data (Motorola) | . | . | M | 2.23.00 | 3274 |
| Office Document Imaging File | MDI | . | M | 2.10.00 | 1904 |
| OfficeWriter Document | . | . | M | 2.19.00 | 2764 |
| OGG FLAC Compressed Audio | OGG | . | M | 2.21.00 | 2922 |
| OGG Vorbis Compressed Audio | OGG | . | M | 2.07.00 | 1537 |
| OGG Vorbis Compressed Audio (MacBinary) | OGG | . | M | 2.16.00 | 2451 |
| OGG Vorbis Compressed Video | OGM | . | M | 2.10.00 | 1934 |
| OKI MSM6376 Synthesizer Chip PCM File | PCM | . | M | 2.03.06 | 934 |
| Oktalyzer Tracker Music Module | OKT | . | M | 2.14.00 | 910 |
| OllyDbg Module Information | UDD | . | M | 2.11.00 | 2068 |
| OmniForm Form | OFM | Y | H | 2.17.00 | 2515 |
| OmniPage Character Recognition Tree | BCT | . | M | 2.07.00 | 1415 |
| OneNote Note File | ONE | . | M | 2.15.00 | 2376 |
| OOP Compressed Archive | OOP | . | M | 2.08.00 | 1620 |
| Open eBook Forum Publication | OPF | . | H | 2.21.00 | 2924 |
| Open Financial Exchange File | QFX | . | M | 2.14.00 | 2326 |
| Open Inventor 3d Scene (ASCII) | IV, IRIS, INVENTOR | . | M | 2.12.00 | 807 |
| Open Inventor 3d Scene (Binary) | IV, IRIS, INVENTOR | . | M | 2.12.00 | 808 |
| Open WebMail Email Message | EML, TXT | Y | H | 2.22.01 | 550 |
| OpenBSD Linkable Format | . | . | M | 2.23.00 | 3276 |
| OpenDark Compressed Archive | . | . | M | 2.21.00 | 2995 |
| OpenDocument Chart | ODC | Y | H | 2.21.00 | 2488 |
| OpenDocument Chart Template | OTC | Y | H | 2.21.00 | 2489 |
| OpenDocument Formula | ODF | Y | H | 2.21.00 | 2490 |
| OpenDocument Formula Template | OTF | Y | H | 2.21.00 | 2491 |
| OpenDocument Graphics | ODG | Y | H | 2.21.00 | 2492 |
| OpenDocument Graphics Template | OTG | Y | H | 2.21.00 | 2493 |
| OpenDocument Image | ODI | Y | H | 2.21.00 | 2494 |
| OpenDocument Image Template | OTI | Y | H | 2.21.00 | 2495 |
| OpenDocument Office Document | ODT, O?I, O?G, O?F, O?C, O?T, OD?, OT? | Y | H | 2.21.00 | 1499 |
| OpenDocument Presentation | ODP | Y | H | 2.21.00 | 2496 |
| OpenDocument Presentation Template | OTP | Y | H | 2.21.00 | 2497 |
| OpenDocument Spreadsheet | ODS | Y | H | 2.21.00 | 2498 |
| OpenDocument Spreadsheet Template | OTS | Y | H | 2.21.00 | 2499 |
| OpenDocument Text | ODT | Y | H | 2.21.00 | 2500 |
| OpenDocument Text Master | OTM | Y | H | 2.21.00 | 2501 |
| OpenDocument Text Template | OTT | Y | H | 2.21.00 | 2502 |
| OpenDocument Text Web | OTH | Y | H | 2.21.00 | 2503 |
| openEHR Archetype Definition Language | ADL | . | M | 2.18.00 | 2691 |
| OpenEXR High Dynamic-Range Bitmap | EXR | . | M | 2.08.00 | 1674 |
| Openflight Scene Description 3D Model | FLT | . | M | 2.14.00 | 729 |
| OpenFont Encrypted Scalable Binary | . | . | M | 2.22.00 | 3046 |
| OpenFont Scalable Binary | . | . | M | 2.22.00 | 3045 |
| Opengroup/POSIX TAR Archive | TAR | . | M | 2.22.00 | 2314 |
| OpenOffice Database | ODB | Y | H | 2.21.00 | 2615 |
| OpenOffice Drawing / Template | SXD, STD | Y | H | 2.21.00 | 2610 |
| OpenOffice Impress Presentation / Template | SXI, STI | Y | H | 2.21.00 | 2612 |
| OpenOffice Math Formula | SXM | Y | H | 2.21.00 | 2611 |
| OpenOffice Spreadsheet / Template | SXC, STC | Y | H | 2.21.00 | 2613 |
| OpenOffice Text Document / Template | SXW, STW | Y | H | 2.21.00 | 2614 |
| OpenSSL Encrypted File | ENC | . | M | 2.18.00 | 620 |
| OpenType Compact Font Format | OTF | . | M | 2.11.00 | 1303 |
| Opera Bookmark | ADR | . | M | 2.07.00 | 1478 |
| OptimFROG Encoded Audio | OFR | . | M | 2.09.00 | 1719 |
| Oracle 7 Configuration File | ORA, SIZ, VRF, PIN | . | M | 2.03.06 | 917 |
| Oracle 7 Data | NLB | . | M | 2.03.06 | 898 |
| Oracle 7 Data Description | PLI | . | L | 2.00.00 | 956 |
| Oracle 7 Script | ORC | . | L | 2.00.00 | 918 |
| Oracle ASM Tagged Volume Image | . | . | M | 2.22.00 | 3146 |
| Oracle Binary Form Source Code | FMB | . | M | 2.17.00 | 731 |
| Oracle Clustered File System Disk Image (OracleCFS) | . | . | M | 2.22.00 | 3145 |
| Oracle Executable Form | FMX | . | M | 2.17.00 | 733 |
| Oracle Form 3.0 Source Code | INP | . | L | 2.00.00 | 799 |
| Orbiter Scenario | SCN | . | M | 2.17.01 | 1040 |
| OrCAD Capture CIS Database Config. | DBC | . | M | 1.03.00 | 333 |
| OrCAD Capture Project | OPJ | . | M | 1.03.00 | 332 |
| Oren Scientific Wordprocessor Document | ZGT | . | M | 2.12.00 | 2134 |
| OrgPlus Organization Chart | OPX | . | M | 2.17.00 | 915 |
| OS/2 Bitmap Graphic Array | BGA | . | M | 2.07.00 | 1542 |
| OS/2 Icon | ICO | . | M | 2.08.00 | 1683 |
| OS/2 Library (32 bit) | DLL, EXE | Y | H | 2.15.00 | 2397 |
| OS/2 Presentation Manager Metafile | MET | . | H | 2.19.00 | 869 |
| Ovation Pro Document | DPD | . | M | 2.19.00 | 2794 |
| OziExplorer Map | MAP | . | M | 2.13.00 | 2179 |
| OziExplorer Plot Track | PLT | . | M | 2.11.00 | 1989 |
| PABX Background Bitmap | PIX | . | M | 2.08.00 | 949 |
| PageMaker 3.0 Document | PM3 | . | M | 1.00.00 | 131 |
| PageMaker 3.0 Document (MacBinary) | PM3 | . | M | 2.09.00 | 555 |
| PageMaker 3.0 File | PT3 | . | M | 1.00.00 | 132 |
| PageMaker 4.0 Document | PM4 | . | M | 2.09.00 | 962 |
| PageMaker 4.0 Document (MacBinary) | PM4 | . | M | 2.09.00 | 1809 |
| PageMaker 5.0 Document (MacBinary) | PM5 | . | M | 2.09.00 | 963 |
| PageMaker 6.0 Document (MacBinary) | PM6 | . | M | 2.09.00 | 964 |
| PageMaker 6.5 Document | P65 | Y | H | 2.17.00 | 2196 |
| PageMaker 6.5 Publication (MacBinary) | P65 | . | M | 2.09.00 | 923 |
| Pagestream Document | DOC | Y | H | 2.18.00 | 2315 |
| Paint Shop Pro Deformation Map | PSPDEFORMATION, PSP | . | M | 2.06.00 | 1306 |
| Paint Shop Pro Gradient | PSPGRADIENT, GRD, PSP | . | M | 2.10.00 | 1307 |
| Paint Shop Pro Image | PSPIMAGE, PSPBRUSH, PSPFRAME, PSPSELECTI | Y | M | 2.14.00 | 1305 |
| Paint Shop Pro Image Browser Cache | JBF | . | M | 2.00.00 | 810 |
| Paint Shop Pro Line Style | PSPSTYLEDLINE, PSP | . | M | 2.07.00 | 1378 |
| Paint Shop Pro Script | PSPSCRIPT, PSP | . | M | 2.23.00 | 1355 |
| Paint Shop Pro Support File | PSPCACHE, PSP | . | M | 2.07.00 | 1393 |
| Paint.NET Image | PDN | . | M | 2.22.00 | 1985 |
| Paintbrush Multi-Page Fax Bitmap | DCX, CMM, PCX, PCC | Y | M | 2.19.00 | 319 |
| PAKLEO Compressed Archive | PLL | . | M | 2.08.00 | 1627 |
| Palm OS Address Book | DAT, BAK, ABA | . | M | 2.03.06 | 461 |
| Palm OS Application | . | . | M | 2.23.00 | 3278 |
| Palm OS Application Data (MacBinary) | PDB | . | M | 2.09.00 | 1799 |
| Palm OS Database (MacBinary) | PDB | . | M | 2.09.00 | 1798 |
| Palm OS Database/Document | PDB | . | M | 2.07.00 | 1337 |
| Palm OS Datebook | DAT, BAK | . | M | 2.03.06 | 462 |
| Palm OS Dynamic Library | PRC | . | M | 2.23.00 | 3295 |
| Palm OS Expenses | DAT, BAK, DB | . | M | 2.03.06 | 1241 |
| Palm OS Memo Pad | DAT, BAK | . | M | 2.03.06 | 464 |
| Palm OS Patch | PRC | . | M | 2.23.00 | 3296 |
| Palm OS Resource File | PRC | . | M | 2.23.00 | 972 |
| Palm OS To Do List | DAT, BAK | . | M | 2.03.06 | 463 |
| Palm OS Zire Photo Database | DB | . | M | 2.21.00 | 2928 |
| PaperPort Database Map File | SBC, BIN | . | M | 2.14.00 | 2233 |
| PaperPort Scanned Image | MAX | . | H | 2.19.00 | 383 |
| PaperPort Slide Show | FSS | . | M | 2.07.00 | 356 |
| PaperPort Thumbnail Images | PTN | . | M | 2.07.00 | 434 |
| PAQ1 Compressed Archive | . | . | M | 2.08.00 | 1621 |
| PAQ2 Compressed Archive | . | . | M | 2.08.00 | 1622 |
| PAQ3 Compressed Archive | . | . | M | 2.08.00 | 1623 |
| PAQ4 Compressed Archive | . | . | M | 2.08.00 | 1624 |
| PAQ5 Compressed Archive | . | . | M | 2.08.00 | 1625 |
| PAQ6 Compressed Archive | . | . | M | 2.08.00 | 1626 |
| PAQ8JC Compressed Archive | PAQ8JC | . | M | 2.15.00 | 2373 |
| Paradox 7 Report | RSL | . | L | 2.00.00 | 1022 |
| Paradox Form | FSL | . | L | 2.00.00 | 743 |
| Paradox Memo Holder | MB | . | M | 2.21.00 | 3018 |
| Parity Archive Volume Set Specification 1 | PAR | . | M | 2.16.00 | 2406 |
| Parity Archive Volume Set Specification 2 | PAR2 | . | M | 2.11.00 | 1980 |
| Pathetic Writer Document | PW | . | M | 2.19.00 | 2776 |
| Patton&Patton Flowcharting 4 | GFC | . | L | 2.00.00 | 762 |
| PC File Index | NDX, NDS | . | M | 2.19.00 | 2773 |
| PC File Letter / Report | LTR, REP | . | M | 2.19.00 | 2774 |
| PC Link Image | C64 | . | M | 2.08.00 | 1597 |
| PC Paint/Pictor Page Image | PIC, PICTOR, CLP | Y | M | 1.05.00 | 10 |
| PC Paintbrush Bitmap | PCX, PCC | Y | H | 2.15.00 | 11 |
| PC Stomper Data File | DB1, DSX, DWR, LGS, SY0, DST, DSN, AP0 | . | M | 2.18.00 | 1283 |
| PC64 Native File | Pnn, Snn, Unn, Rnn | . | M | 2.08.00 | 1599 |
| PC64 Saved-Session Image | FRZ, C64 | . | M | 2.08.00 | 1598 |
| PCA Security Signatures Catalog | CAT, SIG | . | M | 2.03.06 | 469 |
| pcAnywhere Host File | BHF | . | M | 2.11.00 | 1983 |
| PCMCIA Configuration Library | CLB | . | M | 1.00.00 | 153 |
| PCR Graphic Image | PCR | . | M | 1.00.00 | 90 |
| PCStitch Pattern | PAT | . | M | 2.10.00 | 1858 |
| PDS Picture | IBD | . | M | 1.00.00 | 191 |
| PeachText 5000 Document | . | . | M | 2.19.00 | 2765 |
| PeanutPress eBook | . | . | M | 2.23.00 | 3287 |
| PECompact2 Compressed Executable | EXE | . | M | 2.22.00 | 3159 |
| PeopleSoft Report | RPT | . | M | 2.03.06 | 460 |
| Perfect Office Document | DOC | . | M | 2.17.00 | 2603 |
| Perfect Office Email Database | . | . | M | 2.22.00 | 3107 |
| Perl Application | PL | . | M | 2.16.00 | 955 |
| Perl-Parsed HTML | PHTML | . | L | 2.00.00 | 944 |
| Persistence of Vision Ray-Tracer | POV, INC | . | M | 2.22.00 | 968 |
| Personal Home Page Script | PHP, PHP3, PHP4, PH3, PH4 | . | M | 2.15.01 | 2403 |
| PestPatrol Scan Strings | DAT | . | M | 2.07.00 | 1454 |
| Petite Compressed Executable | EXE | . | M | 2.22.00 | 3160 |
| Pfaff Home Embroidery Format | PCS | . | M | 2.11.00 | 2022 |
| PFS: 1st Publisher Art Image | ART | . | M | 1.00.00 | 129 |
| PFS: 1st Publisher Directory Summary | DIR | . | M | 2.07.00 | 1554 |
| PFS: 1st Publisher Document | PUB | . | M | 1.00.00 | 130 |
| PFS: 1st Publisher Macro | MAC | . | M | 1.00.00 | 128 |
| PFS: First Choice Database | FOL | . | M | 2.21.00 | 3004 |
| PFS: First Choice Document | DOC | . | M | 2.21.00 | 3003 |
| PFT Archive | PFT | . | M | 2.22.00 | 3076 |
| PGC Portfolio Graphics Comp. Bitmap | PGF | . | M | 2.08.00 | 1668 |
| Phillips Compact Disk Interactive File | CDI, IFF | . | M | 2.16.00 | 500 |
| Phoenix Visual Designer Form | FRM | . | M | 2.15.00 | 2388 |
| Phoenix Visual Designer Project | PBP | . | M | 2.11.00 | 1981 |
| Phone Doubler | QCALL, QCA | . | M | 2.16.00 | 2464 |
| Photo Express Pattern/Gallery | PST, SMP | . | M | 2.11.00 | 1339 |
| Photo Lab File | EFIF | . | M | 2.16.00 | 671 |
| PhotoBase Catalog | CAT | . | M | 2.10.00 | 1969 |
| PhotoDeluxe Clipart Gallery | GAL | . | M | 1.05.00 | 363 |
| PhotoDeluxe Lighting Style Plug-in | . | . | M | 2.07.00 | 1410 |
| PhotoDeluxe Support File | PSP | . | M | 2.07.00 | 1392 |
| PhotoImpact Color Map | MAP | . | M | 1.05.00 | 392 |
| PhotoImpact Data | QCP | . | M | 2.07.00 | 390 |
| PhotoImpact Graphic Image | UFO | Y | H | 2.17.00 | 2205 |
| PhotoImpact Pencil Style | GAP | . | M | 2.06.00 | 396 |
| PhotoImpact Presets/Clipart Images | SMP, UOL, PST | . | M | 2.11.00 | 395 |
| Photono-Software Stealther Skin | SKN | . | M | 2.11.00 | 2033 |
| Photoshop Color Book | ACB, 8BCB | . | M | 2.19.04 | 2621 |
| PhotoStudio Album | ABM, ALB | . | M | 2.10.00 | 1965 |
| PhotoStudio Image | PSF, LOG | . | M | 2.07.00 | 1390 |
| PhotoStudio Macro | MCR | . | M | 2.10.00 | 1963 |
| PhotoSuite Album | CTF | . | M | 2.07.00 | 417 |
| PhotoSuite Picture Catalog | CTG | . | M | 2.06.00 | 1327 |
| piAccess Mail / Link | PIL | . | M | 2.16.00 | 946 |
| PIC Graphic Image | PIC | . | M | 1.00.00 | 159 |
| PICS Animation File | PCS | . | L | 2.00.00 | 936 |
| Picture Publisher Bitmap | PP4, PP5 | . | L | 2.00.00 | 969 |
| Picture Pump Project File | PPP | . | M | 2.11.00 | 971 |
| PictureGear Studio File | BXU | . | M | 2.20.00 | 2913 |
| PictureMaker Blue Channel Image Data | B8 | . | M | 2.20.00 | 1650 |
| PictureMaker Green Channel Image Data | G8 | . | M | 2.08.00 | 1649 |
| PictureMaker Red Channel Image Data | R8 | . | M | 2.08.00 | 1648 |
| PIM Compressed Archive | PIM | . | M | 2.19.02 | 2822 |
| Pine Email Message | EML, TXT | Y | H | 2.22.01 | 577 |
| Pinnacle Sound Bank | PSB | . | L | 2.00.00 | 977 |
| Pinnacle Studio Scene | SCN | . | M | 2.17.00 | 1038 |
| PINs encrypted data | PINS | . | M | 2.16.00 | 947 |
| Pixar Picture | PICIO, PIXAR, PIC, PXR | . | L | 2.00.00 | 945 |
| PixelPaint Professional Image | PIXELPAINT | . | L | 2.00.00 | 950 |
| PK Arc Self Extracting Archive | EXE | . | M | 1.00.00 | 81 |
| PK Lite Compressed DOS Program | COM | . | M | 2.10.00 | 1818 |
| PK Pak Archive | ARC, PAK | . | M | 1.00.00 | 20 |
| PK Zip Archive | ZIP, JAR, WMZ | Y | M | 2.03.09 | 12 |
| PK Zip Archive (Encrypted) | ZIP, JAR, WMZ | Y | H | 2.23.00 | 3176 |
| PK Zip Archive (MacBinary) | ZIP | . | M | 2.09.00 | 1735 |
| PK Zip Archive Split File | CA1, CA2, CA3, CA4, CA5, CA6, CA7, CAn | . | M | 2.06.00 | 1272 |
| PK Zip Self Extracting Archive | EXE, ZIP | Y | M | 1.00.00 | 283 |
| PKCS #7 Secure MIME Message | P7M, EML, TXT | . | M | 2.22.01 | 1810 |
| PKCS Certificate / Digital ID | P7C, P10, P12, P7B | . | L | 2.00.00 | 924 |
| PlanPerfect Data | . | Y | M | 2.22.00 | 3106 |
| PlanPerfect Worksheet | . | Y | M | 2.22.00 | 3105 |
| Player Model (Quake 2) | MD2 | . | M | 2.10.00 | 1902 |
| PlayStation 2 Icon | SYS | . | M | 2.11.00 | 2050 |
| PlayStation ADPCM Sound | VAG | . | M | 2.07.00 | 1524 |
| PlayStation Executable | EXE | . | M | 2.08.00 | 1690 |
| PlayStation Patch File | PPF | . | M | 2.11.00 | 970 |
| Playstation Sound Format | PSF | . | M | 2.07.00 | 1391 |
| PlayStation2 TIM2 Bitmap | TM2 | . | M | 2.08.00 | 1091 |
| Plucker Document | PDB | . | M | 2.23.00 | 2453 |
| PMarc Archive | PMA | . | M | 2.22.00 | 3115 |
| Pocket CE Application | APP | . | M | 2.11.00 | 1978 |
| Pocket Streets Map | MPS | . | M | 2.10.00 | 1915 |
| Polychrome Recursive Format Bitmap | PRF | . | M | 2.13.00 | 2201 |
| Polygon 3D Objects | POLY | . | M | 2.17.00 | 2561 |
| Polygon Model Format | PLY | . | M | 2.11.00 | 961 |
| PolyHedral Database | PHD | . | M | 2.17.00 | 2560 |
| Polynomial Texture Map | PTM | . | M | 2.11.00 | 1992 |
| Polyphonic Phone Ringtone | PMD | . | M | 2.19.00 | 2771 |
| PolyTracker Music Module | PTM | . | M | 2.11.00 | 980 |
| Portable Application Description (XML) | XML | Y | H | 2.14.00 | 2337 |
| Portable Arbitrary Map Image (Binary) | PAM | . | M | 2.14.00 | 2276 |
| Portable BitMap Image (ASCII) | PBM, PNM | . | M | 1.00.00 | 273 |
| Portable BitMap Image (Binary) | PBM, PNM | . | M | 1.00.00 | 186 |
| Portable Game Notation | PGN | . | M | 2.11.00 | 1988 |
| Portable GreyMap Image (ASCII) | PGM, PNM, PBM | . | M | 1.00.00 | 275 |
| Portable GreyMap Image (Binary) | PGM, PNM, PBM | . | M | 1.00.00 | 187 |
| Portable Monochrome Recursive Format Image | MRF | . | M | 2.17.00 | 2592 |
| Portable Network Graphics Bitmap | PNG | Y | H | 2.23.00 | 965 |
| Portable PixMap Image (ASCII) | PPM, PNM, PBM | . | M | 1.00.00 | 281 |
| Portable PixMap Image (Binary) | PPM, PNM, PBM | . | M | 1.00.00 | 188 |
| Portrait Innovations Image | PI2 | . | M | 2.14.00 | 2245 |
| Post-it-Notes (MacBinary) | PWN | . | M | 2.16.00 | 2456 |
| PostScript Printer Description | PPD | . | M | 2.14.00 | 2224 |
| Power Music Song/Module | PM | . | M | 2.11.00 | 1990 |
| PowerBASIC Compiled Unit | PBU | . | M | 2.11.00 | 1982 |
| PowerBASIC Debugger Symbols | PDB | . | M | 2.11.00 | 908 |
| PowerBASIC Resource | PBR | . | M | 2.11.00 | 931 |
| PowerBuilder Dynamic Library | PBD, DLL | . | M | 2.03.06 | 927 |
| PowerBuilder Dynamic Library (MacBinary) | PBD, DLL | . | M | 2.16.00 | 2504 |
| PowerBuilder Library | PBL | . | M | 2.17.00 | 930 |
| PowerISO Direct Access Archive | DAA | . | M | 2.19.00 | 2791 |
| Powerpacker Archive | PP | . | M | 2.22.00 | 2306 |
| PowerRegister Data | DAT | . | M | 2.10.00 | 1953 |
| PPMD Archive | PPMD | . | M | 2.22.00 | 3077 |
| PPMZ Archive | PMZ | . | M | 2.22.00 | 3065 |
| PPMZ2 Archive | PMZ | . | M | 2.14.00 | 2305 |
| Precompiled Setup Information | PNF | . | M | 2.17.02 | 346 |
| Preminet File | PREMINET | . | M | 2.16.00 | 2505 |
| Presence Information Data Format | PIDF | Y | H | 2.16.00 | 2452 |
| Pretty Good Privacy (PGP) Private Keyring | SKA, SKR | . | M | 2.07.00 | 1066 |
| Pretty Good Privacy Encrypted Data | . | . | M | 2.16.00 | 2435 |
| Pretty Good Privacy Key/Signature Text | TXT | . | M | 2.16.00 | 2414 |
| Pretty Good Privacy Key/Signature/Data | PGP | . | M | 2.16.00 | 942 |
| Pretty Good Privacy Message (ASCII) | . | . | M | 2.22.00 | 3086 |
| Pretty Good Privacy Public Key Block | . | . | M | 2.16.00 | 2432 |
| Pretty Good Privacy Public Key Block (ASCII) | . | . | M | 2.22.00 | 3085 |
| Pretty Good Privacy Public Keyring | PKR | . | M | 2.16.00 | 1452 |
| Pretty Good Privacy Signature | . | . | M | 2.16.00 | 2434 |
| Pretty Good Privacy Signature (ASCII) | ASC | . | H | 2.18.00 | 2627 |
| Pretty Good Privacy Signed Message | . | . | M | 2.16.00 | 2433 |
| Pretty Good Privacy Signed Message (ASCII) | . | . | M | 2.22.00 | 3084 |
| Pretty Good Privacy Virtual Disk Image | PGD | . | M | 2.09.00 | 1730 |
| Pretty Simple Archive | PSA | . | M | 2.14.00 | 2307 |
| Print Shop Art | SHP | . | M | 1.00.00 | 135 |
| Print Shop/Print Master Images | SDR, NAM | . | M | 1.00.00 | 137 |
| Printer Escape Codes/Output | PRN | . | M | 1.00.00 | 223 |
| Printer Job Language Image | PJL, SPL, PRN | Y | H | 2.06.03 | 408 |
| Printer Separator Page | SEP, HPC, GPD | . | M | 2.07.00 | 459 |
| Printronix Graphics File | PTX | . | L | 2.00.00 | 981 |
| Pro Evolution Soccer Game Archive | AFS | . | M | 2.15.00 | 547 |
| Pro Motion Sprites Sequence/Animation | SPR | . | M | 2.11.00 | 2042 |
| Pro/ENGINEER Assembly | ASM | . | M | 2.18.00 | 2706 |
| Pro/ENGINEER Geographic Image | PTR | . | M | 2.05.00 | 1260 |
| Pro/ENGINEER Geographic Image Form | FRM | . | M | 2.07.00 | 1555 |
| Professional Write Document | PW | . | M | 2.19.00 | 161 |
| ProgDVBR MPEG2 Video | MPEG, MPG | . | H | 2.19.00 | 2104 |
| Program Overlay | OVL, OVR, DVR, DRV, OVn, RSR | . | M | 1.00.00 | 27 |
| Program Traceback | PGTB | Y | H | 2.18.01 | 2635 |
| Progressive Graphics Image | PGF | . | M | 2.08.00 | 1669 |
| Project Dogwaffle Animated Brush | ANB | . | M | 2.20.00 | 2863 |
| Pronto Remote Control Codes File | CCF | . | M | 2.07.00 | 1462 |
| Prosa State Transition Diagram Model | STM | . | M | 2.17.00 | 1064 |
| Protracker 3 Module Music | MOD | Y | H | 2.18.00 | 2580 |
| Protracker Studio 16 Format | PS16 | . | M | 2.11.00 | 1996 |
| Protracker Studio Module | PSM | . | M | 2.11.00 | 979 |
| Provector 2D Image | DR2D | Y | H | 2.18.00 | 2278 |
| ProWrite Document | WOR, IFF | Y | H | 1.00.00 | 228 |
| PS2 Powersave File | MAX | . | M | 2.17.00 | 859 |
| Pscript Binary PostScript Printer Desc | BPD | . | M | 2.13.00 | 2158 |
| PsiMail Internet Provider Template | PRV | . | L | 2.00.00 | 975 |
| Psion Agenda File | AGN | . | M | 2.18.00 | 2622 |
| Psion Series 3 Bitmap | PIC | . | M | 2.08.00 | 1003 |
| Psion Series 3 Database | DBF | . | M | 2.11.00 | 1997 |
| Psion Series 3 Word Document | WRD | . | M | 2.11.00 | 912 |
| Psion Series 3/3a Printer Driver | WDR | . | M | 2.12.00 | 2114 |
| PSpice Capture Design/Library/Symbols | DSN, DBK, OLB, OBK | Y | H | 2.17.00 | 331 |
| PSpice Schematic | SCH | . | M | 2.11.00 | 1036 |
| PSYCLE Tune/Song | PSY | . | M | 2.11.00 | 1999 |
| PUCrunch Archive | . | . | M | 2.22.00 | 3067 |
| Pulsar POP3 Daemon Mailbox Cache | . | . | M | 2.23.00 | 3298 |
| PureVoice Audio | QCP | Y | M | 2.09.00 | 1090 |
| PUT Compressed Archive | PUT, INS | . | M | 2.08.00 | 800 |
| PwrDev Visual Designer Project | VD | . | M | 2.11.00 | 2073 |
| Python Tkinter / UNIX Shell Script | PY, PYC, TCL, SH, PL | . | M | 2.16.00 | 987 |
| Python Tkinter Library | PYC | . | M | 2.10.00 | 1956 |
| Python Tkinter Library Icons | ICNS | . | M | 2.07.00 | 445 |
| Q&A Write Document | QW | . | M | 2.19.00 | 999 |
| Q0 Graphic Header | FAL | Y | M | 1.00.00 | 190 |
| QazaR Compressed Archive | AZA | . | M | 2.18.00 | 2719 |
| QED Symbolic Math Data Structure | TREE | Y | H | 2.18.00 | 2641 |
| QEMU Qcow Disk Image | IMG | . | M | 2.13.00 | 1448 |
| QEMU Suspend Disk Image | IMG | . | M | 2.23.00 | 3260 |
| QLFC Compressed Archive | GQ | . | M | 2.08.00 | 1606 |
| Quake 2 Map | BSP | . | M | 2.20.00 | 2906 |
| Quake Spy Tab File | QST | . | L | 2.00.00 | 996 |
| Quantum Archive | . | . | M | 2.22.00 | 3058 |
| QuArk Compressed Archive | ARK | . | M | 2.08.00 | 1629 |
| Quark Desktop Color Separation | DCS, EPS | . | L | 2.00.00 | 669 |
| Quark XPress Document (MacBinary) | QXD | . | M | 2.16.00 | 1764 |
| Quark XPress Document/Template (English,Intel) | QXD, QXT, QWD, QWT, QXL, QXB | . | M | 2.13.00 | 1000 |
| Quark XPress Document/Template (English,Motorola) | QXD, QXT, QWD, QWT, QXL, QXB | . | M | 2.13.00 | 1439 |
| Quark XPress Document/Template (Korean,Intel) | QXD, QXT, QWD, QWT, QXL, QXB | . | M | 2.22.00 | 3112 |
| Quark XPress Document/Template (Korean,Motorola) | QXD, QXT, QWD, QWT, QXL, QXB | . | M | 2.22.00 | 3113 |
| Quark XPress Template (MacBinary) | QXT | . | M | 2.09.00 | 1765 |
| Quartz Composer Data | QTZ | . | M | 2.19.02 | 2826 |
| Quasijarus Strong Compressed Archive | Z | . | M | 2.22.00 | 3121 |
| Quatro Pro File | CLP, QPW | Y | H | 2.17.00 | 155 |
| QuattroPro for DOS Spreadsheet | WQ1, WQ2 | . | L | 2.00.00 | 1153 |
| QuattroPro Spreadsheet | WB1, WB2, WB3 | . | M | 2.09.00 | 1135 |
| Quick Ray Trace | QRT | . | M | 2.12.00 | 990 |
| Quick3D Model Object | Q3O | . | M | 2.07.00 | 1502 |
| Quick3D Model Scene | Q3S | . | M | 2.07.00 | 1503 |
| QuickArt Document | QAD, PF | . | L | 2.00.00 | 988 |
| Quickbooks & Family Tree Spelling Lexicon Dictionary | CLX | . | M | 2.23.00 | 1958 |
| QuickBooks for Windows Accountant's Backup | QBX | Y | H | 2.23.00 | 3308 |
| QuickBooks for Windows Application Data | DAT | . | M | 2.23.00 | 3306 |
| QuickBooks for Windows Backup | QBW | . | M | 2.19.00 | 989 |
| QuickBooks for Windows Backup (Encrypted) | QBW, TLG | . | M | 2.23.00 | 3304 |
| QuickBooks for Windows Configuration | ND | . | M | 2.23.00 | 3309 |
| QuickBooks for Windows Copy File | QCF | . | M | 2.23.00 | 3307 |
| QuickDraw 3D Metafile | 3DMF | . | M | 2.14.00 | 655 |
| Quicken Data File | QDF, QSD, ABD, CFG, DIR | . | M | 2.11.00 | 1308 |
| Quicken Electronic Library | QEL, QFI, DAT, DES | . | M | 2.07.00 | 1309 |
| Quicken Interchange Format | QIF | . | M | 2.17.00 | 993 |
| Quicken Price History | QPH | . | M | 2.07.00 | 1443 |
| Quicken QuickFinder Information | IDX | . | M | 2.07.00 | 1447 |
| QuickFileCollection Archive | QFC | . | M | 2.22.00 | 1628 |
| QuickLink Mobile Phonebook | PBOOK | . | H | 2.15.00 | 867 |
| QuickSheet Spreadsheet | . | . | M | 2.23.00 | 3288 |
| QuickTime Data | MAPPING, QDAT, QTR, BITMAP | . | M | 2.10.00 | 1297 |
| QuickTime Image | QTI, QTIF, QTS, QTX, QIF | . | M | 2.16.00 | 997 |
| QuickTime Movie | MOV, QTM, QT | Y | M | 2.23.00 | 236 |
| QuickTime Movie (MacBinary) | MOV, QTM, QT | . | M | 2.09.00 | 1748 |
| QuickTime Preferences File | QTP | . | M | 2.06.00 | 998 |
| QuickTime Xtra Plug-in | X16, X32, 68K, PPC | . | M | 2.05.00 | 1266 |
| QuikLink 2 Fax Document | QFX | Y | M | 1.00.00 | 183 |
| QV Map Geographic Coordinates | CAL | . | M | 2.21.00 | 2935 |
| RabbitGraph Chart | . | . | M | 2.22.00 | 3137 |
| RAD Developer Color Scheme | RCS | . | M | 2.11.00 | 2004 |
| Radiance 3D Scene Description | RAD | . | M | 2.17.00 | 2562 |
| Radiance High Dynamic Range Image | HDR | . | M | 2.17.00 | 2568 |
| Railroad Tycoon Building Category | BCA | . | M | 2.08.00 | 1567 |
| Railroad Tycoon Building Type | BTY | . | M | 2.08.00 | 1568 |
| Railroad Tycoon Car/Cargo Properties | CAR, CTY | . | M | 2.08.00 | 1570 |
| Railroad Tycoon Locomotive Properties | LCO | . | M | 2.08.00 | 1569 |
| Railroad Tycoon Packaged Graphics | PK4 | . | M | 2.08.00 | 1571 |
| Raima Arcserve Database | 00?, DAT | . | M | 2.14.00 | 1218 |
| RAR Compressed Archive | RAR, Rnn, Snn | . | M | 2.08.00 | 1252 |
| RAR Self Extracting Archive | EXE | . | M | 2.22.00 | 3164 |
| Raster Document Object | RDO | . | M | 2.10.00 | 664 |
| Raw GSM 6.10 Audio Stream | GSM | . | M | 2.22.00 | 771 |
| Ray Dream Studio Native Data Format | RDS, 3DS, D3D | . | M | 2.11.00 | 2006 |
| Rayshade 3D Scene | RAY, SHADE | . | M | 2.22.00 | 1005 |
| Real 3D Rendering | . | Y | H | 2.23.00 | 3245 |
| Real Pool Image | RGB | . | M | 1.05.00 | 387 |
| Real Tracker Music Module | RTM | . | M | 2.11.00 | 1023 |
| REALbasic Project | RB | . | M | 2.11.00 | 2002 |
| RealFlight Radio Control Flying File | AIRPORTS | . | M | 2.19.04 | 2858 |
| Reality AdLib Tracker 2-op FM Music | RAD | . | M | 2.17.00 | 662 |
| RealJukebox Data File | DAT | . | M | 2.11.00 | 2077 |
| RealJukebox Upgrade | RUP | . | M | 2.10.00 | 1942 |
| RealLegal Binder Document | PEX | . | H | 2.09.00 | 1802 |
| RealMedia Audio Sound | RA, RAM | . | M | 2.07.00 | 1002 |
| RealMedia Audio/Video Stream | RM, RMJ, RAM, RA, RT, RP, RPA | . | M | 2.13.00 | 1015 |
| RealMedia Metadata Backup | TMD | . | M | 2.06.00 | 1316 |
| RealMedia Metafile | RAM | . | M | 2.19.03 | 2833 |
| RealPlayer Live Channel | CHL, GD | . | M | 2.14.00 | 2225 |
| RealPlayer Selected Track | STE | . | M | 2.11.00 | 1004 |
| Reason Song | RPS | Y | M | 2.09.00 | 1724 |
| Reason Sound Bank | RFL | Y | M | 2.09.00 | 1722 |
| ReBirth Song | RBS | . | M | 2.09.00 | 1720 |
| REBOL Script / Data | R | . | M | 2.17.00 | 1001 |
| ReCycled Audio Loop Export File | REX | Y | M | 2.09.00 | 1721 |
| Red Faction II Game Data | PEG | . | M | 2.11.00 | 1986 |
| Red Hat Package Manager Archive | RPM | . | M | 2.07.00 | 1019 |
| Redolog Hard Disk Image | . | . | M | 2.17.00 | 564 |
| Reduq Archive | RDQ | . | M | 2.14.00 | 2309 |
| Reflex Database | RXD | . | M | 1.00.00 | 138 |
| Reflex Report | RXR | . | M | 1.00.00 | 139 |
| Regcleaner Language File | RLG | . | M | 2.11.00 | 2009 |
| Reiser File System Disk Image (ReiserFS) | . | . | M | 2.22.00 | 3138 |
| Relax NG Compact Syntax File | RNC | Y | H | 2.16.00 | 2454 |
| Remote Desktop Protocol Connection | RDP | . | M | 2.11.00 | 2005 |
| RenderMan Interface Bytestream | RIB | . | M | 2.12.00 | 1011 |
| RenderWare Script | RWX | . | M | 2.03.06 | 255 |
| RepliGo Virtual Print File | RGO | . | M | 2.11.00 | 2008 |
| Rescue Rover Data File | ROV | . | L | 2.00.00 | 1018 |
| Resident Compressor Archive | . | . | M | 2.18.00 | 2650 |
| ReSOF Compressed Archive | SOF | . | M | 2.08.00 | 1636 |
| Resource Interchange File Format | RIFF, RIF, AVI, WAV, BND | Y | H | 2.20.00 | 212 |
| Resource Texture Extension | RTX | . | M | 2.07.00 | 439 |
| Revolution Resource Archive | CLU | . | M | 2.18.00 | 2662 |
| Rhino 3D Model | 3DMF, 3DM | . | M | 2.14.00 | 2282 |
| Rich Map File | RMF | . | M | 2.17.00 | 1017 |
| RKive AUdio Compressed Audio | RK, RKA, RKAU | . | M | 2.15.00 | 2375 |
| RLE Graphic Image | RLE | . | M | 1.00.00 | 91 |
| Road Rash Saved Game | RRS | . | L | 2.00.00 | 1021 |
| RoboHELP K-keywords Project Index | KKW | . | L | 2.00.00 | 820 |
| RoboHELP Project Information | RBH | . | L | 2.00.00 | 1006 |
| RocketEdition eBook | RB | . | M | 2.11.00 | 2003 |
| Roland S-series Floppy Image | SDK | . | L | 2.00.00 | 1045 |
| ROM Chip Image | BIN, ROM | . | M | 2.07.00 | 256 |
| Romanian archiver eXpert Achive | RAX | . | M | 2.14.00 | 2308 |
| Round-Robin Database | RRD | . | M | 2.19.03 | 2832 |
| RPG Maker Graphic Image | XYZ | . | M | 2.08.00 | 1687 |
| RS7000 OS Image | PGM | . | M | 2.11.00 | 1987 |
| RSA Crypto Key | PUB, PPK | . | M | 2.15.00 | 2395 |
| RTrace 3D Image | SFF, SCN | . | M | 2.22.00 | 3040 |
| Runtime Software Disk Image | DAT | . | M | 2.15.00 | 2356 |
| RxWord Capture Form | PRI | . | M | 2.12.00 | 2144 |
| Rzip Archive | RZ | . | M | 2.14.00 | 2310 |
| SAdT Music Composer Module/Song | SAT | . | M | 2.14.00 | 826 |
| Samna Word Document | . | . | H | 2.19.00 | 2766 |
| SampleVision Sound | SMP | . | M | 2.11.00 | 2037 |
| SAPCAR Archive | CAR | . | M | 2.22.00 | 2939 |
| SAS JMP Discovery Statistics File | JMP | . | L | 2.00.00 | 811 |
| Savings Bonds Wizard Data | SBW | . | M | 2.11.00 | 2018 |
| SBC Compressed Audio | SBC | . | M | 2.08.00 | 1631 |
| Scalable Polyphony MIDI Music | MID | . | M | 2.16.00 | 496 |
| Scalable Vector Graphics Image | SVG | . | H | 2.05.00 | 1264 |
| ScanVec Inspire Native File | SCI | . | L | 2.00.00 | 1037 |
| Scenarist Closed Caption File | SCC | . | M | 2.13.00 | 2165 |
| SciTex ContinuousTone Image(MacBinary) | CT, SCT, SCITEX | . | M | 2.09.00 | 1736 |
| SCO Compressed Archive | LZH | . | M | 2.22.00 | 3120 |
| SCO Unix Driver | O | . | M | 2.06.00 | 1302 |
| Scodl Picture | SCD | . | M | 1.00.00 | 211 |
| Scream Tracker v3 Instrument/Sample | S3I, SMP, SND | . | M | 2.07.00 | 1026 |
| ScreenCam Movie | SCM | . | M | 2.12.00 | 2109 |
| Scribus Document | SLA, SCD, SLAZ | . | M | 2.11.00 | 2036 |
| ScriptBasic Binary File (32 bit) | BBF | . | M | 2.20.00 | 2876 |
| ScriptBasic Binary File (64 bit) | BBF | . | M | 2.20.00 | 2877 |
| Sculpt3D Scene Model | SCENE | Y | H | 2.18.00 | 1034 |
| SDL Motion JPEG Video | MJPG | . | M | 2.23.00 | 2110 |
| Sea Archive | SEA | Y | M | 2.23.00 | 261 |
| Seagate Backup Tape Image | BKF | . | H | 2.18.02 | 2728 |
| Sealed GIF Image | SGI, SGIF, S1G | . | M | 2.16.00 | 2425 |
| Seattle Film Works JPEG Image | SFW | . | L | 2.00.00 | 1059 |
| SecureRemote Data | C | . | M | 2.03.06 | 624 |
| SeeMail Video (MacBinary) | SEE | . | M | 2.16.00 | 449 |
| Sega FILM/CPK File Format | CPK, SND | . | M | 2.12.00 | 2101 |
| Segmented Hypergraphics Bitmap | SHG | . | M | 2.08.00 | 1680 |
| Selectable Mode Vocoder Sound | SMV | . | M | 2.16.00 | 491 |
| Semicolon Divided Values File | SDV | . | H | 2.21.00 | 1051 |
| Semone Archive | ONE | . | M | 2.15.00 | 473 |
| Senddisk File | . | . | M | 1.00.00 | 142 |
| Set Bitmap | IMG | . | M | 2.07.00 | 1458 |
| Setup Information | INF, INI, CDF, ISS, SWT | . | M | 2.15.02 | 455 |
| Setup Information File Index | 1 | . | M | 2.06.00 | 1322 |
| sfArk Compressed SoundFont | SFARK | . | M | 2.11.00 | 2025 |
| SFzip SoundFont Archive | SFZ | . | M | 2.08.00 | 1028 |
| SGI File System Disk Image | . | . | M | 2.22.00 | 3133 |
| SGI XFS File System Disk Image | . | . | M | 2.22.00 | 3134 |
| SGML Document Type Definition | DTD, ENT, XML | . | H | 2.23.00 | 686 |
| Shareaza Thumbnail | DAT | . | M | 2.15.00 | 2357 |
| Sheppy's ImageMaker Apple Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 3201 |
| Shockwave 3D Model | W3D | . | M | 2.14.00 | 611 |
| Shockwave Audio | SWA | . | M | 2.07.00 | 1084 |
| Shockwave Flash Object | SWF | Y | H | 2.23.00 | 429 |
| Shockwave Flash Object (MacBinary) | SWF | . | M | 2.09.00 | 1759 |
| Shockwave Movie Object | MOO | . | M | 2.17.00 | 1030 |
| Shorten Compressed Audio | SHN | . | M | 2.16.00 | 1723 |
| ShowBiz Project File | SBZ | . | M | 2.11.00 | 2019 |
| Shrink Compressed DOS Program | COM | . | M | 2.10.00 | 1816 |
| ShrinkIt Apple II Compressed Archive | BXY, BLU | . | M | 2.20.00 | 2368 |
| Shrinkit/Nulib/NuFile Archive | SHK | . | M | 2.23.00 | 2312 |
| SIDPlayer Music Module | SID | . | M | 2.14.00 | 2269 |
| Sierra Game Data File | GRD | . | M | 2.00.00 | 1209 |
| Sierra Game Data File | PRF, PKF | . | M | 2.00.00 | 381 |
| Sierra User Profile | LOG | . | M | 2.00.00 | 1217 |
| Sigma Camera RAW Picture Image | X3F | . | M | 2.19.04 | 2844 |
| Silicon Graphics Object | SGO | . | H | 2.22.00 | 1061 |
| Silicon Graphics RGB Bitmap Image | SGI, BW, RGB, RLE, IRIS, RGBA | Y | M | 2.13.00 | 176 |
| Simple Musical Score IFF MIDI | SMU, IFF, SMUS, MUS | Y | H | 1.00.00 | 198 |
| Simple ROM File System Image (ROMFS) | IMG | . | M | 2.14.00 | 2334 |
| Simple User Interface Toolkit Library | SUI | . | M | 2.11.00 | 2047 |
| Simple Vector Format Image | SVF | . | M | 2.11.00 | 1083 |
| SimpleText Document (MacBinary) | TXT | . | M | 2.09.00 | 1773 |
| Sims Archive, The | FAR | . | M | 2.07.00 | 1603 |
| Sims Extensive Audio, The | XA | . | M | 2.07.00 | 1538 |
| Sims Game Data, The | IFF | . | M | 2.07.00 | 1523 |
| Simulink Simulation Model | MDL | . | M | 2.19.00 | 2768 |
| Six-2-Four (624) Packed DOS Executable | COM | . | M | 2.14.00 | 1813 |
| Sketch Drawing | SK | . | M | 2.11.00 | 2030 |
| SKY Compressed Archive | SKY | . | M | 2.08.00 | 1635 |
| Skype Conversation | DAT | . | M | 2.10.00 | 1935 |
| Skype Localization Data | MLS | . | M | 2.19.00 | 2737 |
| Skype Profile and Contacts | DBB | . | M | 2.19.00 | 2753 |
| Skype Voice Mail | DAT | . | M | 2.11.00 | 2079 |
| Skyroads Data File | LZS | . | L | 2.00.00 | 849 |
| Slide Show Image | SNX, REF | . | M | 1.00.00 | 300 |
| Slim! Compressed Archive | FB | . | M | 2.08.00 | 715 |
| Smacker Compressed Movie | SMK | . | M | 2.12.00 | 2111 |
| Smart BootManager Backup Disk Image | . | . | M | 2.22.00 | 3124 |
| SmartDraw Drawing | SDR | . | M | 2.13.00 | 1048 |
| SmartDraw Library | SDL | . | L | 2.00.00 | 1046 |
| SmartDraw Template | SDT | . | L | 2.00.00 | 1050 |
| Smith Corona Word Processor Document | PWP | . | M | 2.19.00 | 984 |
| snAPPshot ASCII Application Object Template | AXT | . | M | 2.18.00 | 2716 |
| SNMP MIB Definition | MIB | . | M | 2.07.00 | 1557 |
| Snoop Capture | CAP | . | M | 2.21.00 | 2938 |
| SoftImage 3D Image | PIC | . | M | 2.08.00 | 1677 |
| Softimage XSI 3D Model | XSI | . | M | 2.12.00 | 2133 |
| Software Game Archive | SGA | . | M | 2.08.00 | 1633 |
| Software Toolworks Sound | SND | Y | M | 1.00.00 | 307 |
| Soldat Bot Information | BOT | . | M | 2.20.00 | 2899 |
| SolidWorks eDrawings Assembly | EASM | . | M | 2.19.00 | 2798 |
| Solitaire Image Recorder Image | SIR | . | M | 2.17.00 | 2595 |
| Sonarc Compressed RAW PCM Audio | SNC | . | M | 2.09.00 | 1725 |
| Sonarc Compressed VOC Audio | VC | . | M | 2.07.00 | 1525 |
| Sonata CAD Modelling File | T2T | . | L | 2.00.00 | 1086 |
| Sonic Foundry ACID 3 Music | ACD | . | M | 2.05.00 | 1265 |
| Sonic Foundry Data | VEG | . | M | 2.11.00 | 2076 |
| Sonic Foundry MIDI Sysex Sample Resource | SFR | . | M | 2.21.00 | 1058 |
| Sonic Foundry VideoEditor Wave64 Audio | W64 | . | M | 2.07.00 | 1527 |
| Sonic Skin | SKN | . | H | 2.15.00 | 2389 |
| Sonique Document with Graphics | SGF | . | M | 2.11.00 | 2032 |
| Sony Movie | MQV | . | M | 2.19.02 | 2820 |
| Sony OpenMG Music Format | OMA | . | M | 2.15.00 | 2383 |
| Sony RAW Image | ARW | . | M | 2.20.00 | 2865 |
| Sound Blaster Instrument | SBI | Y | M | 1.00.00 | 189 |
| Sound Blaster Instrument Bank | IBK | . | M | 1.00.00 | 197 |
| Sound Blaster Studio II Package Song | PAC | . | M | 2.06.00 | 925 |
| Sound Blaster Studio II Sound Sample | SOU | . | M | 2.09.00 | 1703 |
| Sound Designer 1 Audio File | SD | . | L | 2.00.00 | 1042 |
| Sound Designer 2 Flattened File | SD2 | . | L | 2.00.00 | 1043 |
| Sound Designer I Audio File | DIG | . | M | 2.03.06 | 675 |
| Sound Forge Peak Data File | SFK | . | M | 2.11.00 | 2026 |
| Sound Tools File | HCOM | . | L | 2.00.00 | 774 |
| SoundBlaster Studio II Sound | SOU | . | L | 2.00.00 | 1072 |
| SoundBlaster Studio Song | SON | . | M | 2.07.00 | 1399 |
| SoundCap/SoundEdit Recorded Instrument | DEWF | . | L | 2.00.00 | 673 |
| Sounder Sound | SND, SNDR | Y | M | 1.00.00 | 276 |
| SoundStage Sound File Data | SFD | . | L | 2.00.00 | 1056 |
| SoundStage Sound File Information | SFI | . | L | 2.00.00 | 1057 |
| SoundTool Sound | SND, SNDT | Y | H | 1.00.00 | 263 |
| Source Code (General) | PAS, C, CPP, JS, H, VB, VBS | . | M | 2.23.00 | 1256 |
| Source Code Header/Include File | H, INC, H16, HXX, C | . | M | 2.15.00 | 403 |
| Source Code Make File | MAK, MK | . | M | 2.13.00 | 405 |
| Source Edit Language Definition | LNG | . | M | 2.11.00 | 2040 |
| Spatial Data Modelling Language | SDML | . | M | 2.17.00 | 1047 |
| SpchComp Encoded Speech/Audio | SPC | . | M | 2.07.00 | 1559 |
| Spectrum 512 Smooshed Image | SPC, SPU, SPS | . | M | 2.07.00 | 1073 |
| Speex Encoded Audio | SPX | . | M | 2.09.00 | 1727 |
| Speex Lossy Audio Codec Raw Audio | SPEEX | . | M | 2.17.00 | 2589 |
| SPHERE Speech Recog Lexical Transcript | LTT, NDX, SRT | . | M | 2.09.00 | 1728 |
| SPHERE Speech Recognition Waveform | NIST, SPH | . | M | 2.09.00 | 896 |
| SpinnerBaker eXtractor Compressed Archive | SB | . | M | 2.08.00 | 1632 |
| Spline Font Database | . | . | M | 2.23.00 | 3231 |
| Splint Archive | SPL | . | M | 2.14.00 | 1074 |
| SPOT Satellite Image | SPOT | . | L | 2.00.00 | 1075 |
| SPPACK Audio | D | . | M | 2.15.00 | 2379 |
| SPPack Sound Sample | SPPACK | . | L | 2.00.00 | 1076 |
| Sprint Document | SPR | . | M | 2.11.00 | 2043 |
| Sprint Music Store Phone Music | KOZ, MP3 | . | M | 2.15.00 | 2382 |
| SPSS Chart Look | CLO | . | M | 2.11.00 | 2044 |
| SPSS Data | SAV | . | M | 2.07.00 | 1446 |
| SPSS Template | CHT, SCT | . | M | 2.21.00 | 2962 |
| SPSS User Table Lookup | TLO | . | M | 2.11.00 | 2045 |
| SpyBot-Search-and-Destroy Signature | SIG | . | M | 2.11.00 | 2028 |
| SQL Server Database Changes Log | LDF | . | M | 2.07.00 | 1556 |
| SQL Server Master Database | MDF | . | M | 2.13.00 | 519 |
| Squash Archive | ARH | . | M | 2.14.00 | 2299 |
| Squash File System Disk Image (Squashfs,Intel) | . | . | M | 2.22.00 | 3143 |
| Squash File System Disk Image (Squashfs,Motorola) | . | . | M | 2.22.00 | 3144 |
| Squeeze Archive | ?Q? | . | M | 1.00.00 | 55 |
| Squeeze Compressed Archive | SQZ | . | M | 2.08.00 | 1639 |
| Squish Compressed Archive | . | . | M | 2.08.00 | 1637 |
| Sqweez Archive | SQZ | . | M | 2.14.00 | 478 |
| SQX Archiver Compressed Archive | SQX | . | M | 2.15.00 | 1638 |
| SSCE Spelling Lexicon Database | SDF | . | M | 2.18.00 | 2721 |
| SSCE Spelling Lexicon Dictionary | CLX, TLX | . | M | 2.23.00 | 2146 |
| STAD Graphic Image | PAC | . | M | 2.06.00 | 1364 |
| Standard Archive Format | SAF, POD | . | M | 2.22.00 | 3041 |
| Standard CPCEMU Style Disk Image | DSK | . | M | 2.10.00 | 1828 |
| Standard Generalized Markup Lang | SGML | . | M | 2.21.00 | 1060 |
| Standard Midi Sequencer Music | MID, MDI, RMI, SMF, MIDI | Y | H | 2.07.00 | 240 |
| Standard-Delay-Format | SDF | . | M | 2.17.00 | 1044 |
| StarCalc Spreadsheet / Template | SDC, VOR | Y | H | 2.17.02 | 2607 |
| StarDraw Image / Template | SDA, VOR | Y | H | 2.17.02 | 2608 |
| StarMath Formula | SMF | Y | H | 2.17.02 | 2541 |
| StarWriter Document / Template | SDW, VOR | Y | H | 2.17.02 | 1052 |
| Stereo CAD-3D Objects Graphics Image | 3D2 | . | M | 2.17.00 | 654 |
| Sticker Store Sticker | STK | . | M | 1.00.00 | 266 |
| Still Picture Interchange File Format (SPIFF) | SPIFF, SPF, JPG, JPEG | . | M | 2.21.00 | 2921 |
| StockChartX Data | STX | . | M | 2.11.00 | 2046 |
| Stonecracker Archive | STC | . | M | 2.14.00 | 479 |
| STOS Animation Bank | MBK | . | M | 2.18.00 | 2657 |
| Streamline Compressed Archive | SAR | . | M | 2.08.00 | 1630 |
| String Data Resource (Unknown Source) | MSG | . | L | 1.05.00 | 378 |
| Structured Fax Format Image | SFF | . | M | 2.08.00 | 1679 |
| Structured Query Language Code | SQC | . | L | 2.00.00 | 1078 |
| Structured Query Language Query | SQL | . | M | 2.19.02 | 1079 |
| Structured Query Language Report / Program | SQR | . | M | 2.17.00 | 1080 |
| StuffIt Mac Archive | SIT, BIN, SITX, DAT | . | M | 2.22.01 | 262 |
| StuffIt Mac Archive (MacBinary) | SIT, BIN | . | M | 2.09.00 | 1757 |
| StuffIt Self-Extrc Archive (MacBinary) | . | . | M | 2.09.00 | 1795 |
| Stunt Island Film | FLM | . | M | 1.00.00 | 54 |
| Subsampled Raw YUV Bitmap | Y, U, V | . | L | 2.00.00 | 1170 |
| Summary Information Stream (NTFS ADS) | . | . | M | 2.20.00 | 2915 |
| Sun Compacted Archive | . | . | M | 2.22.00 | 3118 |
| Sun Icon/Cursor Image | ICON, CURSOR, PR, ICO | . | M | 2.22.00 | 790 |
| Sun Raster Image | RAS, RAST, SUN, SR, SCR, RS, SRS | Y | M | 2.14.00 | 206 |
| Sun TAAC Image File | TAAC, VFF, SUNIFF, IFF | . | L | 2.00.00 | 794 |
| SUNTronic Song/Module | SUN | . | M | 2.11.00 | 2048 |
| Super NES Music/Audio | SPC | . | M | 2.07.00 | 1558 |
| Super Nintendo System ROM Image | SMC | . | M | 2.19.03 | 2834 |
| Super Smooth Animation | SSA | Y | H | 2.23.00 | 3247 |
| SuperCalc Worksheet | CAL | . | M | 2.19.00 | 2777 |
| SuperKey Macro | MAC | . | M | 1.00.00 | 144 |
| SuperMemo Database | . | . | M | 2.23.00 | 3289 |
| SuperView Graphic Bitmap | SVG | . | M | 2.08.00 | 1681 |
| Swag Reader Packet | SWG | . | M | 2.11.00 | 2049 |
| Sweet 16 Apple Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 3202 |
| Sybase Localization File | LCU | . | M | 2.17.00 | 2523 |
| Sybase Translation Table | UCT, UST | . | M | 2.23.00 | 3305 |
| Symantec Norton Ghost Disk Backup | 001, nnn | . | M | 2.19.04 | 2847 |
| Symbian 3a/3c/3mx Waveform Sound | WVE | . | M | 2.07.00 | 1529 |
| Symbian Clipart Images | . | . | M | 2.23.00 | 3227 |
| Symbian Clipboard | . | . | M | 2.21.00 | 3028 |
| Symbian Database | . | . | M | 2.21.00 | 3033 |
| Symbian Device Driver | . | . | M | 2.21.00 | 3036 |
| Symbian EasyFax Initialization | . | . | M | 2.21.00 | 3032 |
| Symbian File (General) | . | . | M | 2.21.00 | 3026 |
| Symbian Font | . | . | M | 2.21.00 | 3015 |
| Symbian Initialization File | INI | . | M | 2.21.00 | 3034 |
| Symbian Installer | SIS | . | M | 2.19.03 | 2029 |
| Symbian Library | DLL, OPX | . | M | 2.21.00 | 3035 |
| Symbian Multi BitMap Image | MBM | . | M | 2.23.00 | 1662 |
| Symbian Organiser Executable | OPO | . | M | 2.21.00 | 913 |
| Symbian Oval Application | APP | . | M | 2.11.00 | 1977 |
| Symbian Printer Definition | . | . | M | 2.21.00 | 3037 |
| Symbian Printer Driver | . | . | M | 2.21.00 | 3027 |
| Symbian Sketch Image | . | . | M | 2.21.00 | 3029 |
| Symbian Spreadsheet | . | . | M | 2.21.00 | 3031 |
| Symbian TextEd Document | . | . | M | 2.23.00 | 3226 |
| Symbian TomeRaider Compressed eBook Document | TR | . | M | 2.11.00 | 2063 |
| Symbian Word Document | . | . | M | 2.21.00 | 3030 |
| Symbian World Data File | DBW | . | M | 2.23.00 | 3228 |
| Symbian/Psion A-Law Voice Note Audio | PSI | . | M | 2.21.00 | 978 |
| Symbolic Debugging Definitions | SYM | . | M | 2.11.00 | 563 |
| Symbolic Link (SYLK) Spreadsheet | SLK | . | M | 2.12.00 | 561 |
| Symphony / Lotus 123 Worksheet | WRK | . | M | 1.00.00 | 107 |
| Symphony Dialog Graphic Image | SDG, RDG | . | M | 2.21.00 | 3014 |
| Symphony Dictionary | DIC | . | M | 2.21.00 | 3012 |
| Symphony Registry Database | RDB | . | M | 2.21.00 | 3013 |
| Synchronized Multimedia Integrat. Lang | SMI, SMIL | . | M | 2.14.00 | 2239 |
| Synthetic Music Mobile Application Sound | MMF | . | M | 2.10.00 | 877 |
| SYSLINUX Boot Logo Image | . | . | M | 2.22.00 | 3103 |
| System Driver | SYS, BIN | . | H | 2.09.00 | 214 |
| SysV R4 PKG Datastreams | . | . | M | 2.16.00 | 2431 |
| SZip Compressed File | SZ, SZIP | . | M | 2.08.00 | 1640 |
| T602 Document | 602 | . | M | 2.17.00 | 2520 |
| T602 Document (CP 852 Encoding) | 602 | . | M | 2.22.00 | 3089 |
| T602 Document (Kamenicky Encoding) | 602 | . | M | 2.22.00 | 3088 |
| T602 Document (KOI8-CS Encoding) | 602 | . | M | 2.22.00 | 3090 |
| Tab Separated Values Text File | TSV, TXT | Y | H | 2.15.00 | 1258 |
| TabWorks File | TWF | . | L | 2.00.00 | 1100 |
| TAC Compressed Audio | TST | . | M | 2.09.00 | 1729 |
| Tachyon Parallel Raytracer 3D Model | DAT | . | M | 2.14.00 | 2284 |
| Tag Image File Format (Intel) | TIFF, TIF, SEP | Y | M | 1.00.00 | 321 |
| Tag Image File Format (MacBinary) | TIFF, TIF, SEP | Y | M | 2.03.18 | 298 |
| Tag Image File Format (Motorola) | TIFF, TIF, SEP, TIM | Y | M | 2.03.12 | 146 |
| Tagwrite Template | TWW | . | M | 2.11.00 | 1101 |
| TAK Lossless Compressed Audio | TAK | . | M | 2.15.00 | 2384 |
| Tape Archive (Compressed with Gzip) | TAZ, TGZ, GZ, Z, GTAR | . | M | 2.07.00 | 1088 |
| Tape Archive File | TAR | . | M | 2.19.03 | 1087 |
| Targa Bitmap Image | TGA, VDA, I?B, VST, TARGA, PIX, BPX, IVB | Y | H | 2.19.00 | 19 |
| TaxACT Form | TA0, TA1, TA2, TA3, TA4, TA8, TA9, TAn | . | M | 2.06.00 | 1315 |
| TCPDump / Libpcap Capture | . | . | M | 2.07.00 | 1442 |
| TealDoc Document | . | . | M | 2.23.00 | 3290 |
| TealInfo Database | . | . | M | 2.23.00 | 3291 |
| TealMeal Database | . | . | M | 2.23.00 | 3292 |
| TealPaint Image | . | . | M | 2.23.00 | 3293 |
| Tektronix Plot 10 Drawing | P10 | . | L | 2.00.00 | 922 |
| TeleDisk Archive | TD0, TD1, TD2, TD3, TD? | Y | M | 2.11.00 | 112 |
| Telemate Script | TMS | . | M | 2.11.00 | 2061 |
| Teleport Pro Project | TPP | . | M | 2.11.00 | 1096 |
| Telix Phone Book | FON | . | M | 2.14.00 | 2340 |
| Telvox Compressed CODEC | . | . | M | 2.08.00 | 1642 |
| Temporary Data File (Unknown Source) | TMP | . | L | 1.05.00 | 379 |
| Terragen Light and Atmosphere | ATM, ATMSPHR | . | M | 2.18.00 | 2709 |
| Terragen Surface Map | SRF | . | M | 2.13.00 | 2181 |
| TeX Device Independent Document | DVI | . | M | 2.10.00 | 1830 |
| Text Adventure Development System Game Data | GAM | . | M | 2.23.00 | 1486 |
| Text Adventure Development System Game Resources | GAM | . | M | 2.23.00 | 3180 |
| Text Adventure Development System Img. | T3 | . | M | 2.07.00 | 1508 |
| Text Adventure Development System Saved Game | GAM | . | M | 2.23.00 | 3181 |
| Text File | TXT, DOC, INI, INF, ASC | Y | H | 2.22.00 | 3 |
| Text File (MacBinary) | TXT, DOC | . | M | 2.09.00 | 1734 |
| Text File (UTF-16BE) | . | . | M | 2.15.00 | 2345 |
| Text File (UTF-32BE) | . | . | M | 2.19.00 | 2734 |
| Text File (UTF-32LE) | . | . | M | 2.19.00 | 2733 |
| Text File (UTF-8) | TXT, INI | . | M | 2.03.12 | 1254 |
| Text File: Unicode/DoubleByte/UTF-16LE | TXT, DOC, INI, INF | . | M | 2.10.03 | 1242 |
| TextCraft Document | FTXT, FTX, IFF | Y | H | 2.18.00 | 199 |
| TextMaker Document | TMD | . | M | 2.11.00 | 2059 |
| Textual 3D Data Description | TTDDD, TTD | . | M | 2.22.00 | 3042 |
| The Bat! Address Book | ABD | . | M | 2.11.00 | 2055 |
| The Bat! Email Hives | TBB | . | M | 2.11.00 | 2056 |
| The Bat! Email Message | EML, TXT | Y | H | 2.22.01 | 2604 |
| The Bat! Hive Index | ABD | . | M | 2.11.00 | 2057 |
| The Final Musicsystem eXtended Module Music | TFX | . | M | 2.17.00 | 2583 |
| The Nemesis Project Game Archive | CLT | . | M | 2.15.00 | 543 |
| ThinkDB Database | . | . | M | 2.23.00 | 3294 |
| ThoughtWing Library Unit File | LU | . | L | 2.00.00 | 842 |
| Thumbs Plus Database | DB, TDB | . | H | 2.17.00 | 1089 |
| Thunderbird Email Message | EML, TXT | Y | H | 2.22.01 | 2605 |
| Thunderbird Mail Summary File | MSF | . | M | 2.19.02 | 2816 |
| Thunderscan Image | SCAN | . | L | 2.00.00 | 1032 |
| TI-92 Bitmap | 92I | . | M | 2.07.00 | 1539 |
| Tiger Map File | TIG | . | L | 2.00.00 | 1092 |
| Time Line File | MAP, T#? | . | M | 1.00.00 | 147 |
| TimeSink AdGateway | IDX, CDB | . | M | 2.14.00 | 2223 |
| Timex Data Link Watch Application | APP | . | M | 2.18.00 | 2701 |
| Timezone Information DB (compiled) | . | . | M | 2.14.00 | 2339 |
| TK3 eBook | TK3 | . | M | 2.11.00 | 2058 |
| TMPGEnc Conversion Template | MCF | . | M | 2.10.00 | 1901 |
| TomTom Traffic Data | DAT | . | M | 2.21.00 | 3000 |
| Toolbook Database | TBK, SBK | . | M | 2.11.00 | 250 |
| ToolMaker User Interface Design | TMUI | Y | H | 2.18.00 | 2640 |
| TOP4 Archive | TOP | . | M | 2.22.00 | 3072 |
| Total Annihilation Saved Game | HPI | . | M | 2.08.00 | 1652 |
| TPac Archive | . | . | M | 2.22.00 | 3079 |
| TracerCAD Drawing | AK | . | M | 2.19.04 | 2857 |
| Track Record Viewer TRV/TRVX Definition | TRV | . | M | 2.11.00 | 2065 |
| Track Record Viewer TRV/TRVX Index | TRX | . | M | 2.11.00 | 2066 |
| Trackjoy Block File | BLK | . | M | 2.10.00 | 1886 |
| Trackjoy GUS Tracker Module | JOY | . | M | 2.10.00 | 1884 |
| Trackjoy GUS Tracker Song | TJS | . | M | 2.10.00 | 1885 |
| Transform Compressed File | TFM | . | M | 2.08.00 | 1641 |
| TreePad Hypertext Database | HJT | . | M | 2.10.00 | 1863 |
| Trend Micro Pattern File | 000, nnn | . | M | 2.17.00 | 2518 |
| Triangular Irregular Network | TIN | . | M | 2.17.00 | 2565 |
| Trickster Online Image | NRI | . | M | 2.15.00 | 639 |
| Tripos MOL2 3D Molecule Image | MOL2 | . | M | 2.17.00 | 2545 |
| TrueCrypt Dynamic File | TC | . | M | 2.23.00 | 3175 |
| TrueSpace 3D Object (ASCII) | COB, SCN | . | M | 2.18.00 | 2665 |
| TrueSpace 3D Object (Binary) | COB, SCN | . | M | 2.07.00 | 1470 |
| TrueType Font Collection | TTC | . | M | 2.13.00 | 2159 |
| TTA (True Audio) Free Lossless Audio | TTA | . | M | 2.16.00 | 2405 |
| Turbo C Help | TCH | . | M | 2.14.00 | 2319 |
| Turbo C Project File | PRJ | . | M | 1.00.00 | 303 |
| Turbo Compiler Context File | DSK | . | M | 2.06.00 | 1285 |
| Turbo Pascal Help | TPH | . | M | 2.11.00 | 2062 |
| Turbo Pascal Symbol Table | PSM | . | M | 2.11.00 | 1998 |
| Turbo Pascal Unit | TPU, TP | . | M | 1.00.00 | 226 |
| Turbo Silver 12bit RGB Image | RGBN | Y | H | 2.18.01 | 2594 |
| Turbo Silver 24bit RGB Image | RGB8 | Y | H | 2.18.01 | 2593 |
| Turbo Vision Help | TVH | . | M | 2.14.00 | 2320 |
| TurboTax DHTML Help Index | LIF | . | M | 2.15.00 | 2390 |
| TurboTax Form (1) | 1PE, 1PH | . | M | 2.15.00 | 928 |
| TurboTax Form (2) | HEFS | . | M | 2.15.00 | 2398 |
| TurboTax Tax Return | TAX | . | M | 2.11.00 | 2093 |
| Turtle Beach WaveFront Bank | WFB | . | L | 2.00.00 | 1142 |
| Turtle Beach WaveFront Drum Set | WFD | . | L | 2.00.00 | 1143 |
| Turtle Beach WaveFront Program | WFP | . | L | 2.00.00 | 1144 |
| TV Paint Image | . | Y | H | 2.18.00 | 827 |
| Typhoon Voice File | O01 | . | L | 2.00.00 | 905 |
| u-boot/PPCBoot Disk Image (JFFS,Motorola) | . | . | M | 2.22.00 | 3141 |
| UFA Compressed Archive | UFA | . | M | 2.07.00 | 1438 |
| UFOCaptureV2 Map | DAT | . | M | 2.21.00 | 3001 |
| UHArc Compressed Archive | UHA | . | M | 2.14.00 | 484 |
| Uhuru Sound Software Musical Score | . | Y | H | 2.23.00 | 3253 |
| Uhuru Sound Software Voice | . | Y | H | 2.23.00 | 3252 |
| Ultra Tracker Module Music | ULT | . | M | 2.17.00 | 1107 |
| UltraCompressor II compressed archive | UC2 | . | M | 2.14.00 | 1643 |
| UltraTracker Wave Audio | UWF | . | M | 2.09.00 | 1110 |
| Ultrix Compacted Archive | . | . | M | 2.22.00 | 3119 |
| Unicode Extensions | UCE | . | M | 2.20.00 | 1190 |
| Unicode Font Metrics | UFM | . | M | 2.13.00 | 2161 |
| Unicode Translated Fonts | NTF | . | M | 2.17.00 | 2521 |
| Unicode Type Font | UTF | . | M | 2.13.00 | 2182 |
| Unidata NetCDF Graphic Image | CDF | . | M | 2.10.00 | 1923 |
| Unified Emulator Format | UEF | . | M | 2.10.00 | 1844 |
| Unity3d Environment | UNITYWEB | . | M | 2.16.00 | 486 |
| Universal Hint System File | UHS | . | M | 2.11.00 | 2070 |
| Unix Fast File System V1 Disk Image (Intel) | . | . | M | 2.22.00 | 3128 |
| Unix Fast File System V1 Disk Image (Motorola) | . | . | M | 2.22.00 | 3130 |
| Unix Fast File System V2 Disk Image (Intel) | . | . | M | 2.22.00 | 3129 |
| Unix Fast File System V2 Disk Image (Motorola) | . | . | M | 2.22.00 | 2731 |
| UNIX Plot(5) File | PLOT | . | L | 2.00.00 | 958 |
| UNIX Program Library (32-bit) | SO | . | M | 2.14.00 | 2265 |
| UNIX Program Library (64-bit) | SO | . | M | 2.14.00 | 1251 |
| UNIX Program/Program Library (32-bit) | ELF | . | M | 2.14.00 | 2264 |
| UNIX Program/Program Library (64-bit) | ELF | . | M | 2.14.00 | 1250 |
| UNIX Shell Archive | SHAR | . | M | 2.14.00 | 2311 |
| Unreal Game Archive | UNR, UMX, UAX, UTX, UVX, UKX, USX, U?? | . | M | 2.15.00 | 382 |
| UPX Compressed Executable | EXE | . | M | 2.22.00 | 3158 |
| US Telephony Audio File | ULAW | . | L | 2.00.00 | 1106 |
| USA 98: Streets & Destination Map File | GMF | . | M | 1.05.00 | 397 |
| USA 98: Streets & Destination Tour | U98 | . | M | 1.05.00 | 398 |
| Utah Raster Toolkit Image | RLE, URT | Y | M | 1.00.00 | 210 |
| UU-Encoded File | UU, UUE, DAT | Y | H | 2.03.15 | 1109 |
| UUNET Dial-in Script | SCR | . | M | 2.00.00 | 1230 |
| Valve Game Map | BSP | . | M | 2.20.00 | 2904 |
| VAX 3.0 Archive | . | . | M | 2.22.00 | 3055 |
| VBOX Voice Message Audio | . | . | M | 2.23.00 | 3223 |
| Vectrex Game | GAM | . | M | 2.07.00 | 1484 |
| Velvet Studio Music Module Song | AMS | . | M | 2.08.00 | 581 |
| Ventura Generated Text File | GEN | . | L | 2.00.00 | 760 |
| Ventura Publisher File | CAP, CHP, STY | . | M | 1.00.00 | 152 |
| Ventura Publisher Publication | VP | . | L | 2.00.00 | 1126 |
| Venturi Client Key | ENC | . | M | 2.23.00 | 3303 |
| VeriSign Security Certificate | CER, CRT, DER, DAT, CRL | . | M | 2.07.00 | 615 |
| Vi IMproved Encrypted File | VIM | . | M | 2.22.00 | 3091 |
| Vi IMproved Swap File | . | . | M | 2.22.00 | 3092 |
| Vicar Picture | VIC, IMG | . | M | 2.15.00 | 2385 |
| Video CD | VCD | . | M | 2.19.03 | 2837 |
| Video CD MPEG Movie | DAT | . | H | 2.08.00 | 446 |
| Video Email | WEM | . | M | 2.12.00 | 2094 |
| Videoscape 3D Model with Colored Faces | GEO, SHP | . | M | 1.00.00 | 306 |
| Videoscape 3D Model with Colored Verti | GEO | . | M | 2.14.00 | 2285 |
| Videoscape 3D Model with Gouraud Curve | GEO | . | M | 2.14.00 | 2287 |
| Videoscape 3D Model with Light Source | GEO | . | M | 2.14.00 | 2286 |
| VideoScape File | VID | . | L | 2.00.00 | 1118 |
| Viewpoint Executable (compressed) | MTJ | . | M | 2.13.00 | 2151 |
| Viewpoint iPix File | MTS | . | M | 2.10.00 | 1941 |
| Viewpoint Java Script (compressed) | MTJ | . | M | 2.13.00 | 2152 |
| Viewpoint Library (compressed) | MTJ | . | M | 2.13.00 | 2150 |
| Viewpoint Scene Attributes (compressed) | MTZ | . | M | 2.13.00 | 2149 |
| Viking Designer 1 Embroidery Image | SHV | . | M | 2.11.00 | 2024 |
| Virtual Box Disk Image | VDI | . | M | 2.23.00 | 3207 |
| Virtual Business Card File | VCF | . | M | 2.12.02 | 421 |
| Virtual Calendar File | VCS, ICS | . | M | 2.18.00 | 2072 |
| Virtual CDROM File | FCD | . | M | 2.03.06 | 716 |
| Virtual Game Station Memory Card Save | VGS | . | M | 2.12.00 | 2095 |
| Virtual MC-10 Tape Image | C10 | . | M | 2.07.00 | 1480 |
| Virtual Pascal Unit | VPI | . | M | 2.17.00 | 2570 |
| Virtual Reality World (ASCII) | WRL, WRZ, VRML, WRML | . | M | 2.17.00 | 412 |
| Virtual Reality World (Binary) | WRL, IVR, BEH, LIT, WRZ | . | M | 1.05.00 | 413 |
| Virtual TI Skin | SKN | . | M | 2.11.00 | 2034 |
| Virtual World Interchange File | FFIVW | . | M | 2.17.00 | 722 |
| VisiCalc Spreadsheet | VC | . | H | 2.19.00 | 566 |
| VisioModeler (Infomodeler) | IMD | . | M | 2.13.00 | 2163 |
| Visionary Image | VIS | . | M | 2.16.00 | 2473 |
| Vista Digital Elevation Model File | DEM | . | M | 2.03.06 | 1244 |
| Vista Graphic Image | VST | . | M | 2.08.00 | 1684 |
| VistaDB Database | VDB | . | M | 2.11.00 | 2075 |
| Visual CertExam Suite Exam | VCE | . | M | 2.17.00 | 1115 |
| Visual Objects Application Export File | AEF | . | M | 2.18.00 | 2694 |
| VITec Bitmap | VIT | . | M | 2.08.00 | 1682 |
| Vivid Ray-Tracer Image | IMG | Y | M | 1.00.00 | 182 |
| VivoActive Streaming Video | VIV, VIVO | . | M | 2.17.00 | 1121 |
| VMD 3D Image | VMD | . | M | 2.17.00 | 2566 |
| VMware Configuration File | VMX | . | M | 2.12.00 | 2112 |
| VMware Virtual Disk Descriptor File | VMDK | . | M | 2.10.00 | 1877 |
| VMware Virtual Disk Image | VMDK | . | M | 2.23.00 | 1878 |
| VOCPACK Lossless Compressed Audio | VP | . | M | 2.07.00 | 1526 |
| Voice Master Key Sound | V8, V3S | Y | M | 1.00.00 | 156 |
| Vorbis Lossy Audio Codec Raw Audio | VORBIS | . | M | 2.17.00 | 2590 |
| VORT Raster Image | VORT | . | M | 2.08.00 | 1124 |
| VoxWare MetaVoice Encoded Audio | VOX | Y | H | 2.07.00 | 1125 |
| VTBuilder Binary Terrain | BT | . | M | 2.20.00 | 2907 |
| VTeX Multiple Master Font Metrics | MFM | . | M | 2.13.00 | 2169 |
| VZ200/300 Image File | VZ | . | M | 2.12.00 | 2113 |
| Walkman NW-S23 MP3 Archive | DAT | . | M | 2.15.00 | 1726 |
| Wang Imaging File | XIF | . | L | 2.00.00 | 1161 |
| Warcraft III Game Map | W3M, W3X | . | M | 2.07.00 | 1511 |
| Warcraft III Recorded Game | W3G, W3Z | . | M | 2.07.00 | 1510 |
| Warhammer 40,000 Texture | RSH | . | M | 2.11.00 | 2012 |
| Warlords Battlecry Archive | XCR | . | M | 2.08.00 | 1645 |
| WatchGuard Cloaked File | CLK | . | M | 2.21.00 | 2966 |
| WaveL Wavelet Compressed Bitmap | IWC | . | M | 2.08.00 | 1656 |
| Wavelet Scalar Quantization Image | WVL | . | M | 2.21.00 | 1156 |
| WaveZIP Lossless Compressed Audio | MCP | . | M | 2.07.00 | 1531 |
| WavPack Lossless Compressed Audio | WV | Y | H | 2.16.00 | 1528 |
| Waypoint GPS Locations Map | WPT | . | M | 2.12.00 | 2128 |
| WBEM Managed Object Format | MOF, MFL | . | M | 2.19.00 | 1234 |
| WBEM Repository | REP | . | M | 2.06.00 | 1310 |
| WBEM Repository Database Map | MAP | . | M | 2.11.00 | 2082 |
| WBEM Repository Database Support File | BTR, DATA | . | M | 2.07.00 | 437 |
| Web Application Description Language | WADL | Y | H | 2.16.00 | 2506 |
| Web Service Description Language | WSDL | . | H | 2.15.00 | 2186 |
| WebDesigner Template | HMP | . | M | 2.06.00 | 1292 |
| WebEx Recording | WRF | . | M | 2.19.03 | 2840 |
| WebEx Universal Communications Data | UCF | . | M | 2.21.00 | 3025 |
| WebShots Image | WB1 | . | M | 2.12.00 | 2116 |
| Westmead EEG File | EEG | . | M | 2.18.00 | 2619 |
| WHAP Compressed Amiga Archive | AP | . | M | 2.19.00 | 2780 |
| WildTangent Compressed Game Data | WSAD, WSMO, WSGO, WSBM | . | M | 2.15.00 | 2402 |
| WildTangent Compressed JPEG Image | WJP | . | M | 2.15.00 | 518 |
| WildTangent Compressed PNG Image | WPG, WJP | . | M | 2.15.00 | 604 |
| WildTangent Compressed Wave Sound | WWV | . | M | 2.15.00 | 895 |
| WildTangent Game Data | CDAS, CDANFO, CDAET, WTCFG, CDAED, CDAES | . | M | 2.15.00 | 899 |
| WildTangent World Data | WDAT | . | M | 2.21.00 | 3024 |
| Winamp Advanced Visualization Studio | AVS | . | M | 2.18.00 | 2713 |
| Winamp MP3 Playlist | M3U | . | M | 2.07.00 | 1497 |
| WinAmp MPEG Play List | PLS | . | M | 2.11.00 | 959 |
| WINDEV Component Description | WDI | . | M | 2.12.00 | 2121 |
| WINDEV Compressed Archive | WDZ | . | M | 2.08.00 | 1644 |
| WINDEV Controls' Styles Description | GAB | . | M | 2.12.00 | 2118 |
| WINDEV Hyper File Database | FIC | . | M | 2.12.00 | 2117 |
| WINDEV Index | NDX | . | M | 2.17.00 | 2516 |
| WINDEV Procedures' Set | WDG | . | M | 2.12.00 | 2120 |
| WINDEV Project | WDP | . | M | 2.12.00 | 2122 |
| WINDEV Report | WDE | . | M | 2.12.00 | 2119 |
| WINDEV Run-Time Template | WDY | . | M | 2.12.00 | 2124 |
| WINDEV Window | WDW | . | M | 2.12.00 | 2123 |
| Windows Binary Performance Log (Win2K) | BLG | . | M | 2.13.01 | 2206 |
| Windows Media (HD) Photo | WDP, HDP | . | M | 2.21.00 | 2919 |
| Windows Media Player Play List | WPL | . | M | 2.03.06 | 466 |
| Windows NT Media Services Database | . | . | M | 2.07.00 | 1413 |
| Windows Policy Template | ADM | . | M | 2.19.04 | 2852 |
| Windows Policy Template (Unicode) | ADM | . | M | 2.19.04 | 2853 |
| Windows Product Activation Database | DBL | . | M | 2.13.00 | 2166 |
| Windows Vista Contact | CONTACT | . | H | 2.21.00 | 2980 |
| WinDump / Winpcap Capture | ACP | . | M | 2.07.00 | 1457 |
| WinDVD Bookmark File | BMK | . | M | 2.03.06 | 599 |
| Wing Commander III MVE Movie | MVE | Y | H | 2.12.00 | 2105 |
| Wingz Compiled Script | . | . | M | 2.23.00 | 3257 |
| Wingz Help | . | . | M | 2.23.00 | 3258 |
| Wingz Spreadsheet | WKZ | . | M | 2.23.00 | 3256 |
| WinHex Position Data | POS | . | M | 2.11.00 | 1993 |
| WinHki Compressed Archive | HKI | . | M | 2.08.00 | 1610 |
| WinHki Self Extracting Archive | EXE | . | M | 2.22.00 | 3167 |
| WinImage file | IMA, WIL, DAT | . | M | 2.06.00 | 798 |
| WinIMP Archive | IMP | . | M | 2.08.00 | 537 |
| WinPharoah Capture | ETH | . | M | 2.07.00 | 1444 |
| WinPharoah Filter | FTR | . | M | 2.07.00 | 1215 |
| WinRK Archive | RK | . | M | 2.15.00 | 2374 |
| WinUAE Game Configuration | UAE | . | M | 2.07.00 | 1509 |
| WinUAE Saved State | USS | . | M | 2.11.00 | 2071 |
| WinXComp Grouped Compressed Archive | GCF | . | M | 2.08.00 | 1605 |
| WinZip Archive (Encrypted) | ZIP | Y | H | 2.23.00 | 3177 |
| WinZip Self Extracting Archive | EXE, ZIP | . | M | 2.09.02 | 584 |
| WinZix Compressed Archive | ZIX | . | M | 2.19.04 | 2845 |
| Wired For Sound | SND, SNW | Y | H | 1.00.00 | 168 |
| Wireless Bitmap | WBMP | . | M | 2.15.00 | 525 |
| Wireless LAN Encrypted Profile | ENC | . | M | 2.18.00 | 602 |
| Wireless Markup Language | WML | . | H | 2.19.00 | 2730 |
| Wise Installer Log | LOG | . | M | 2.17.00 | 658 |
| Wise Installer Self Extracting Archive | EXE | . | M | 2.22.00 | 3161 |
| WordPerfect Assistant Template | AST | . | M | 2.06.00 | 1324 |
| WordPerfect Block | . | Y | M | 2.22.00 | 2252 |
| WordPerfect Calendar | . | Y | M | 2.22.00 | 3104 |
| WordPerfect Dictionary Rules | . | Y | M | 2.22.00 | 2258 |
| WordPerfect Display Resource | DRS | Y | M | 2.22.00 | 2255 |
| WordPerfect Document | DOC, WP, WKB, WPD, WPT, WP# | Y | M | 2.22.00 | 157 |
| WordPerfect Document (MacBinary) | DOC, WP, WKB, WPD, WPT, WP# | . | M | 2.16.00 | 1738 |
| WordPerfect Document (Macintosh) | DOC | Y | M | 2.22.00 | 2259 |
| WordPerfect Document (VAX) | DOC | Y | M | 2.22.00 | 2260 |
| WordPerfect Document Template | WPX | Y | H | 2.17.00 | 1360 |
| WordPerfect Equation Resource | QRS | Y | M | 2.22.00 | 2257 |
| WordPerfect External Spelling Dictionary | . | . | M | 2.14.00 | 2261 |
| WordPerfect Graphic Image | WPG | Y | M | 2.22.00 | 160 |
| WordPerfect Help | . | Y | M | 2.22.00 | 2247 |
| WordPerfect Hyphenation Code/Data | . | Y | M | 2.22.00 | 2251 |
| WordPerfect Keyboard Definition | . | Y | M | 2.22.00 | 2248 |
| WordPerfect Macro | WPM, WCM | Y | M | 2.22.00 | 158 |
| WordPerfect Office Color Correction | CC, PF, ICM | . | M | 2.06.00 | 1276 |
| WordPerfect Office Notebook | NB | . | M | 1.00.00 | 207 |
| WordPerfect Overlay | FIL | Y | M | 2.22.00 | 2256 |
| WordPerfect Printer Resource | PRS | Y | M | 2.22.00 | 2250 |
| WordPerfect Setup/Installation Data | SET, INS | Y | M | 2.22.00 | 2254 |
| WordPerfect Spelling Lexicon Dictionary | LEX, MOR, ADV | . | M | 2.22.00 | 1425 |
| WordPerfect Support File | WP?, ?RS, ALL, LAB, MOR, CBD | Y | M | 2.19.00 | 163 |
| WordPerfect Thesaurus | . | Y | M | 2.22.00 | 2249 |
| WordPerfect Video Driver | . | Y | M | 2.22.00 | 2253 |
| WordStar 2000 Document | WS2 | . | M | 2.19.00 | 2748 |
| WordStar Document | WS1, WS2, WS3, WS4, WS5, WS6, WS7, DOC | Y | H | 2.19.00 | 458 |
| WordStar for Windows | WSD, DOC | Y | H | 2.12.00 | 465 |
| Working Model Motion Simulation | WM | . | M | 2.19.03 | 2838 |
| Workshare DeltaView File | WDF | Y | H | 2.17.00 | 1255 |
| World Machine Data File | TMD | . | M | 2.11.00 | 2060 |
| WorldBuilder Scene | WLD | . | M | 2.17.00 | 2567 |
| WorldToolKit 3D Neutral File Format | NFF | . | M | 2.12.00 | 1373 |
| WRAptor Compressed Archive (C64) | WRA | . | M | 2.08.00 | 1590 |
| Write Now Document (MacBinary) | . | . | M | 2.09.00 | 1755 |
| X Windows System Dump Image | XWD, X11 | Y | M | 2.18.00 | 218 |
| X-Protector Project | XPF | . | M | 2.12.00 | 2129 |
| X-ray Diffraction Data | UDF | . | M | 2.17.00 | 1104 |
| X-Tracker Music Module | DMF | . | M | 2.17.00 | 677 |
| X-Windows Portable Compiled Font | PCF | . | M | 2.13.02 | 2211 |
| X1 Archive | X1 | . | M | 2.22.00 | 3059 |
| X11 BitMap | XBM, BM, BMP | . | H | 1.05.00 | 179 |
| X11 Pixmap Image | XPM, PM | . | M | 2.22.00 | 1166 |
| X11 Puzzle File | PUZZ | . | L | 2.00.00 | 982 |
| X11 Xim Toolkit File | XIM | . | L | 2.00.00 | 1162 |
| X11/NeWS Bitmap Font | . | . | M | 2.22.00 | 3047 |
| X11/NeWS Font Family | . | . | M | 2.22.00 | 3048 |
| x509 Security Certificate | CRT | . | M | 2.21.00 | 2984 |
| x509v3 Security Certificate | CRT | . | M | 2.21.00 | 2985 |
| XaoS Position File | XPF | . | M | 2.12.00 | 2130 |
| Xaos Tools Bitmap Image | XOS | . | L | 2.00.00 | 1165 |
| Xara Web Document | WEB | . | M | 2.12.00 | 1141 |
| Xara X Vector Drawing | XAR | . | M | 2.15.00 | 1159 |
| Xargon Game Data | XR1 | . | L | 2.00.00 | 1167 |
| XBase/dBase Compount Index | CDX, DCX | . | M | 2.06.00 | 1325 |
| Xerox Scanner Template | XST | . | M | 2.11.00 | 2090 |
| XGL 3D Model | XGL | . | M | 2.14.00 | 2294 |
| XGS Apple IIGS Emulator 2IMG Disk Image | 2MG, 2IMG | . | M | 2.23.00 | 1476 |
| Xing MPEG Animation | MPG, MPE, M1V, ENC | . | H | 2.19.00 | 247 |
| Xmcd CD Information | XMCD | . | M | 2.16.00 | 2430 |
| XML Based Filtering Format | cl, xml | Y | H | 2.16.00 | 2455 |
| XML Encryption | XML | . | H | 2.16.00 | 2507 |
| XML Paper Specification Document (Open XML) | XPS | Y | H | 2.21.00 | 2148 |
| XML Resource Description Framework | RDF | Y | H | 2.16.00 | 1007 |
| XML Schema | XSD, XML | . | H | 2.23.00 | 2132 |
| XML-binary Optimized Packaging | XOP | . | H | 2.16.00 | 490 |
| XnView Cache Database | DB | . | M | 2.10.00 | 1952 |
| XnView Filter | HFP | . | H | 2.19.00 | 443 |
| XPack Archive | XPA | . | M | 2.22.00 | 3083 |
| XPCOM Type Library | XPT | . | M | 2.06.00 | 1320 |
| XProfan Compiled Unit | PCU | . | M | 2.11.00 | 1984 |
| XSL Formatting Objects Form | FO, XML | . | H | 2.20.00 | 2861 |
| Xtra Cache File | MCH | . | M | 2.06.00 | 1298 |
| XTree Data File | XTP | . | L | 2.00.00 | 1168 |
| XV Visual Schnauzer Thumbnail Image | P7 | . | M | 2.08.00 | 1667 |
| XyWrite / Signature / Nota Bene Document | . | . | M | 2.19.00 | 2749 |
| YAC Compressed Archive | YC | . | M | 2.08.00 | 1646 |
| YAFA animation | . | Y | H | 2.23.00 | 3246 |
| Yahoo! Anti-Spy Quarantine Index | DAT | . | M | 2.11.00 | 2084 |
| Yahoo! Mail Email Message | EML, TXT | Y | H | 2.22.01 | 2606 |
| Yahoo! Online Protection Region File | RGN | . | M | 2.11.00 | 2088 |
| Yahoo! Widget | WIDGET | . | M | 2.15.00 | 2341 |
| Yamaha Music Production Studio Pattern | R2P | . | M | 2.07.00 | 1505 |
| Yamaha Music Production Studio Sample | R3A, R3P | . | M | 2.07.00 | 1507 |
| Yamaha Music Production Studio Seq. | R2A | . | M | 2.07.00 | 1504 |
| Yamaha Music Production Studio Song | R2S | . | M | 2.07.00 | 1506 |
| Yamaha Sound-VQ Locator File | VQE, VQL | . | L | 2.00.00 | 1127 |
| Yamaha SY-Series Wave File | SYW | . | L | 2.00.00 | 1085 |
| Yamaha TwinVQF Music | VQF | . | M | 2.15.00 | 1128 |
| Yamaha TX16W Wave Sound | TXW | Y | M | 2.23.00 | 1103 |
| Yamaha XG Works MIDI File | XWF | . | L | 2.00.00 | 1169 |
| YAODL 3D Scene | YAODL, YDL | . | M | 2.12.00 | 809 |
| YBS Archive | YBS | . | M | 2.22.00 | 1172 |
| yEnc Encoded File | YNC | . | M | 2.07.00 | 1513 |
| Z80 Music Code With AY Music | AYM, AY | . | M | 2.19.00 | 2718 |
| Zebra Metafile | ZBR | . | M | 2.22.00 | 3043 |
| Zinc Interface Library Icon | ZINC | . | L | 2.00.00 | 1175 |
| Zinio Electronic Magazine | ZNO | . | M | 2.05.00 | 1261 |
| Zinio Electronic Magazine Annotations | ZNA | . | M | 2.07.00 | 1416 |
| Zinio Media Database | ZMC | . | M | 2.13.00 | 2167 |
| ZipGenius Compressed Archive | CZIP | . | M | 2.15.00 | 2369 |
| Zone Identifier Stream (NTFS ADS) | IDENTIFIER | . | M | 2.20.00 | 2914 |
| ZoneAlarm Firewall Debug Log | LOG | . | M | 2.23.00 | 3179 |
| Zoo Compressed Archive | ZOO | . | M | 2.16.00 | 56 |
| Zoo Tycoon Game File | ZOO | . | M | 2.11.00 | 2017 |
| ZoomBrowser Database | ZBD | . | M | 2.06.00 | 1321 |
| ZoomBrowser Database Index | INFO | . | M | 2.10.00 | 1880 |
| Zoot Database | ZOT | . | M | 2.12.00 | 2136 |
| ZPack Archive | ZPK | . | M | 2.22.00 | 3062 |
| ZX Spectrum Replay File | RZX | . | M | 2.11.00 | 2014 |
| ZX Spectrum Tape File | TAP | . | M | 2.11.00 | 2053 |
| ZyXEL Voice Audio | ZYX, ZVD | . | M | 2.08.00 | 1702 |
| Zzip Compressed Archive | ZZ | . | M | 2.22.00 | 2846 |
| Zzip Self Extracting Archive | EXE | . | M | 2.22.00 | 3166 |