| 1 | A00 | ESTsoft | Split Multi-volume ARJ Compressed Format Archive (part 2) |
| 2 | A01 | ESTsoft | Split Multi-volume ARJ Compressed Format Archive (part 3) |
| 3 | A02 | ESTsoft | Split Multi-volume ARJ Compressed Format Archive (part 4) |
| 4 | A03 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 5) |
| 5 | A04 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 6) |
|
| 6 | A05 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 7) |
| 7 | A06 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 8) |
| 8 | A07 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 9) |
| 9 | A08 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 10) |
| 10 | A09 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 11) |
| 11 | A10 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 12) |
| 12 | A11 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 13) |
| 13 | A12 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 14) |
| 14 | A13 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 15) |
| 15 | A14 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 16) |
| 16 | A15 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 17) |
| 17 | A16 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 18) |
| 18 | A17 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 19) |
| 19 | A18 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 20) |
| 20 | A19 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 21) |
| 21 | A20 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 22) |
| 22 | A2M | Adlib | Adlib Tracker II Format |
| 23 | A2T | Adlib | Adlib Tracker II Tiny Module Format |
| 24 | A32 | ARJ Software, Inc. | Split Multi-volume ARJ Compressed Format Archive (part 34) |
| 25 | A3D | Eovia | Amapi 3D Modeling |
| 26 | A64 | N/A | Artist 64 |
| 27 | AA | Audible | Audible Audio Book Format |
| 28 | AA3 | Sony | Sony ATRAC Audio Format |
| 29 | AAB | Adobe Systems Incorporated | Adobe Authorware Binary |
| 30 | AAC | N/A | Advanced Audio Coding Format |
| 31 | AAE | Apple | Sidecar Image Edit File |
| 32 | AAF | Avid Technology | Advanced Authoring Format Multimedia Format |
| 33 | AAH | N/A | Amazingly Abstracted HTML document |
| 34 | AAX | Audible | Audible Enhanced Audiobook Format |
| 35 | AB | Google | Google Android Debug Bridge Backup Format |
| 36 | AB1 | N/A | DNA Electropherogram Format |
| 37 | AB2 | Broderbund | Print Shop Address Book Format |
| 38 | ABBU | Apple | Address Book Backup |
| 39 | ABCDDB | Apple, Inc. | Apple Address Book Database |
| 40 | ABCDG | Apple, Inc. | Apple AddessBook |
| 41 | ABCDP | Apple, Inc. | Address Book Card Data |
| 42 | ABE | N/A | Application Boundaries Enforcer |
| 43 | ABF | Microsoft | Analysis Services Backup Format |
| 44 | ABK | N/A | Automatic Backup Format |
| 45 | ABL | Xilinx, Inc. | ABEL Hardware Description Language |
| 46 | ABM | N/A | Photo Album |
| 47 | ABR | Adobe Systems | Adobe Photoshop Brushes Format |
| 48 | ABW | AbiSource | AbiWord Document |
| 49 | ABX | Corel Corporation | Corel WordPerfect Mail Address Book |
| 50 | AC | Inivis Limited | AC3D Geometry Format |
| 51 | AC$ | Autodesk | AutoCAD Temporary Format |
| 52 | AC3 | Dolby Laboratories | Audio Codec 3 Format |
| 53 | AC3D | Inivis Limited | 3d Format Data |
| 54 | ACB | Adobe Systems | Adobe Photoshop Color Book Format |
| 55 | ACBL | Adobe Systems | Adobe Color Book Legacy Format |
| 56 | ACC | FKJ Software | Quicken 2002 Internet Common Format |
| 57 | ACCDA | Microsoft | Access Add-in Format |
| 58 | ACCDB | Microsoft | Access 2007 Database Format |
| 59 | ACCDC | Microsoft | Microsoft Access Signed Package |
| 60 | ACCDE | Microsoft | Access Execute Only Database |
| 61 | ACCDP | Microsoft Corporation | Microsoft Access 2007/2010 Project |
| 62 | ACCDR | Microsoft | Access Runtime Application |
| 63 | ACCDT | Microsoft | Microsoft Access Database Template |
| 64 | ACCDU | Microsoft | Access Add-in Format |
| 65 | ACCFL | Microsoft Corporation | Microsoft Access Field Template |
| 66 | ACCOUNTPICTURE-MS | Microsoft | Windows 8 Account Picture Format |
| 67 | ACE | WinAce | WinAce Compressed Format |
| 68 | ACFF | N/A | Generic |
| 69 | ACFM | Adobe Systems | Adobe Composite Font Metrics Format |
| 70 | ACM | BioWare | Interplay Audio Format |
| 71 | ACO | Adobe Systems | Adobe Photoshop Color Swatch Format |
| 72 | ACR | American College of Radiology | Bitmap Graphics |
| 73 | ACRODATA | Adobe Systems | Acrobat Data Format |
| 74 | ACROTHEME | N/A | Adobe Acrobat theme |
| 75 | ACSM | Adobe Systems | Adobe Content Server Message Format |
| 76 | ACT | N/A | ADPCM Compressed Audio Format |
| 77 | ACTION | Apple | Automator Action |
| 78 | ACTIONSCRIPTPROPERTIES | Adobe Systems Incorporated | Adobe Flex Settings |
| 79 | ACV | Adobe Systems | Photoshop Curves Format |
| 80 | ADA | N/A | Ada Source Code |
| 81 | ADADOWNLOAD | Adobe Systems Incorporated | Adobe Download Assistant Partially Completed Download |
| 82 | ADB | Alpha Software | Alpha Five Database Format |
| 83 | ADCP | Adobe Systems | Adobe Device Central Project Format |
| 84 | ADDOC | MOTU | AudioDesk Project |
| 85 | ADE | Microsoft | Access Project Extension |
| 86 | ADF | ESRI | ArcView ARC/INFO Coverage Data Format |
| 87 | ADL | BOC Information Technologies Consulting AG | ADONIS Models And Model Groups Export |
| 88 | ADML | Microsoft | Microsoft Administrative Language-specific XML Template Format |
| 89 | ADMX | Microsoft | Group Policy Administrative Template Format |
| 90 | ADN | Microsoft | Access Blank Project Template |
| 91 | ADO | Adobe Systems | Adobe Photoshop Duotone Options Format |
| 92 | ADOBEBRIDGE | Adobe Systems Incorporated | Adobe Bridge |
| 93 | ADP | Microsoft | Access Project |
| 94 | ADPCM | N/A | ADPCM audio |
| 95 | ADPP | Adobe Systems | Adobe Device Profile Package |
| 96 | ADR | N/A | Opera Bookmarks Format |
| 97 | ADTG | N/A | Advanced Data TableGram |
| 98 | ADTS | N/A | Audio Data Transport Stream Format |
| 99 | ADZ | N/A | Compressed Amiga Disk Format |
| 100 | AECACHE | Adobe Systems | After Effects Cache File |
| 101 | AEGRAPHIC | Adobe Systems | Adobe After Effects Graphic |
| 102 | AEP | Adobe Systems | After Effects Project |
| 103 | AEPX | Adobe Systems | After Effects XML Project |
| 104 | AES | Packetizer | AES Crypt Encrypted Format |
| 105 | AET | Adobe Systems | After Effects Project Template |
| 106 | AETX | Adobe Systems | After Effects XML Project Template |
| 107 | AEU | Microsoft Corporation | Microsoft AutoRoute Express Europe Route |
| 108 | AFC | Electronic Arts | Compressed Audio Interchange Format |
| 109 | AFI | AOMEI | AOMEI Backupper File Backup File |
| 110 | AFM | Adobe Systems | Adobe Font Metrics Format |
| 111 | AFO-XVID | N/A | Compressed Video |
| 112 | AFPLOC | Apple | Apple Filing Protocol Location |
| 113 | AFX | Auto FX Software | Auto F/X Image Format |
| 114 | AGA | Esri | ArcGIS ArcGlobe |
| 115 | AGTEMPLATE | Adobe Systems Incorporated | Adobe Photoshop Lightroom Preset |
| 116 | AGWL | Distributed and Parallel Systems - University of Innsbruck | Abstract Grid Workflow Language |
| 117 | AHK | AutoHotkey | AutoHotkey Script |
| 118 | AHS | Adobe Systems | Adobe Halftone Screen Format |
| 119 | AHTM | N/A | HTML |
| 120 | AHTML | N/A | HTML |
| 121 | AHU | Adobe Systems | Adobe Photoshop HSL Format |
| 122 | AHX | N/A | WinAHX Tracker Module |
| 123 | AI | Adobe Systems | Adobe Illustrator Graphics Format |
| 124 | AI3 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic Format |
| 125 | AI4 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic |
| 126 | AI5 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic |
| 127 | AI6 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic |
| 128 | AI7 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic |
| 129 | AI8 | Adobe Systems Incorporated | Generic Encapsulated PostScript Graphic Format |
| 130 | AIA | Adobe Systems | Adobe Illustrator Action Format |
| 131 | AIDL | Google Inc. | AIDL Interface |
| 132 | AIF | Apple | Audio Interchange Format Sound Format |
| 133 | AIFC | Apple | Compressed Audio Interchange Format |
| 134 | AIFF | Apple | Audio Interchange Format |
| 135 | AIML | Dr. Richard S. Wallace | Artificial Intelligence Markup Language File |
| 136 | AIP | Adobe Systems | Illustrator Plug-in |
| 137 | AIRI | Adobe Systems Incorporated | Adobe AIR Intermediate |
| 138 | AIT | Adobe Systems | Adobe Illustrator Template |
| 139 | AJA | AJC Systems Ltd. | Backup Revision Control Archive |
| 140 | AKF | Adobe Systems Incorporated | Adobe Acrobat Key |
| 141 | ALAC | Apple | Apple Lossless Audio Codec Audio Format |
| 142 | ALBM | HP | Photo Album Format |
| 143 | ALBUM | N/A | Thumbnail Cache |
| 144 | ALG | ERDAS, Inc. | ER Mapper Algorithm |
| 145 | ALL | Steinberg | Cubasis Project Format |
| 146 | ALT | Microsoft | Dynamics AX Temporary Format |
| 147 | ALV | Adobe Systems | Adobe Photoshop Levels Format |
| 148 | ALX | Microsoft | ActiveX Layout Control Format |
| 149 | AMA | Esri | ArcGIS ArcMap |
| 150 | AMC | N/A | AMC Video Format |
| 151 | AMEPROJ | N/A | Generic |
| 152 | AMEPROJCC | N/A | Generic |
| 153 | AMES | N/A | NASA Ames data exchange format |
| 154 | AMF | ASTM | Advanced Module Format |
| 155 | AMFM | Adobe Systems | Adobe Multiple Font Metrics Format |
| 156 | AMIRAMESH | N/A | Amira 3D mesh |
| 157 | AML | Microsoft | Microsoft Assistance Markup Language |
| 158 | AMOS | IBM | AMOS Basic Code |
| 159 | AMP | Adobe Systems | Adobe Photoshop Curves Map Format |
| 160 | AMR | Ericsson | Adaptive Multi-Rate Codec Format |
| 161 | AMS | Adobe Systems | Adobe Monitor Setup Format |
| 162 | AMU | Sony | Sony PictureGear Studio Photo Album Format |
| 163 | AMV | N/A | AMV Video Format |
| 164 | AN1 | DeLorme | DeLorme Street Atlas Drawing Format |
| 165 | AN8 | Steven Glanville | Anim8or 3D Animation Format |
| 166 | ANDROID | N/A | Readme |
| 167 | ANI | Microsoft | Animated Cursor |
| 168 | ANNOT | Adobe Systems | Adobe Digital Editions Annotations Format |
| 169 | ANR | DeLorme | DeLorme Street Atlas Route |
| 170 | ANS | N/A | ANSI Text Format |
| 171 | ANSI | N/A | Mistaken TXT document |
| 172 | AOB | N/A | DVD-Audio Audio Object Format |
| 173 | AOL | AOL | America On-line Related Format |
| 174 | AOM | Adobe Systems | Adobe After Effects Output Settings Format |
| 175 | AP0 | Microsoft Corporation | Microsoft Windows APW_data |
| 176 | APDB | Apple, Inc. | Apple Aperture Library |
| 177 | APDETECTED | Apple, Inc. | Apple IPhoto |
| 178 | APDISK | Apple, Inc. | Apple Mac OS X Related |
| 179 | APE | Nullsoft | AVS Plugin Effects Format |
| 180 | APFOLDER | N/A | Aperture Folder |
| 181 | APH | Ability Plus Software | Ability Photoalbum Album Database Format |
| 182 | API | Adobe Systems | Acrobat Plug-in |
| 183 | APK | Google | Google Android Package Format |
| 184 | APKG | Damien Elmes | Exported Anki Flashcard Deck |
| 185 | APLMODEL | Apple, Inc. | Apple ICal |
| 186 | APLN | Adobe Systems Incorporated | Adobe InDesign 3rd Party Extension |
| 187 | APLT | Apple, Inc. | Mac OS X AppleScript Applet |
| 188 | APM | Adobe Systems | Aldus Placeable Metafile |
| 189 | APMASTER | N/A | Aperture Master |
| 190 | APNG | N/A | Animated Portable Network Graphics Format |
| 191 | APP | Apple | Mac OS X Application |
| 192 | APPCACHE | N/A | HTML5 Cache Manifest |
| 193 | APPCONTENT-MS | Microsoft | Application Content File |
| 194 | APPDOWNLOAD | Apple | Mac App Store Partially Downloaded App |
| 195 | APPICON | VMware, Inc. | VMWare Cache |
| 196 | APPIMAGE | AppImage | Linux Software Package |
| 197 | APPLACE | N/A | Apple Photos data |
| 198 | APPLE | N/A | Apple AppleSingle Data |
| 199 | APPLEDOUBLE | Apple, Inc. | Apple AppleDouble Resource |
| 200 | APPLESCRIPT | Apple | AppleScript Format |
| 201 | APPLET | Eclipse | Eclipse Java Applet Policy Format |
| 202 | APPLICATION | Microsoft | ClickOnce Deployment Manifest Format |
| 203 | APPREF-MS | Microsoft | Application Reference Format |
| 204 | APPX | Microsoft | Windows 8 App Package |
| 205 | APPXBUNDLE | Microsoft | Windows App Bundle |
| 206 | APPXUPLOAD | Microsoft | Windows 8 App Upload Package |
| 207 | APR | ESRI | ArcView Project Format |
| 208 | APS | Microsoft | Visual C++ Resource Format |
| 209 | APT | N/A | Almost Plain Text Format |
| 210 | APVERSION | N/A | Aperture Version info |
| 211 | APVOLUME | N/A | Apple Photos data |
| 212 | APX | Embarcadero Technologies | Borland C++ Appexpert Database Format |
| 213 | APXL | Apple | Keynote Presentation Data Format |
| 214 | AP_ | Google | ADT Android Developer Package |
| 215 | AQF | Liquid Development, LLP | Aquifer-Generated Web Page |
| 216 | AQL | N/A | AOL DLL |
| 217 | AQT | N/A | AQTitle Subtitles Format |
| 218 | AR | Microsoft | Unix Static Library |
| 219 | ARC | Ivan Zahariev | ARC Lossless Data Compression And Archive Format |
| 220 | ARCH00 | Sierra | F.E.A.R. Game Archive |
| 221 | ARCH05 | N/A | Middle Earth: Shadow of Mordor game data |
| 222 | ARCINFO | Esri | ArcInfo Info |
| 223 | ARCUT | Adobe Systems | Adobe Prelude Rough Cut Format |
| 224 | ARE | BioWare | BioWare Aurora Engine Area |
| 225 | ARF | WebEx Communicatons | WebEx Advanced Recording Format |
| 226 | ARFF | University of Waikato | Weka Attribute-relation Format |
| 227 | ARH | Alawar Entertainment | El Airplane Game Archive Format |
| 228 | ARI | ARRI Group | ARRI Raw Image Format |
| 229 | ARJ | ARJ Software | ARJ Compressed Format Archive |
| 230 | ARK | ARK11 | PowerDesk Pro Archive |
| 231 | ARM | Oracle Corporation | MySQL Archive Storage Engine Metadata |
| 232 | ARMX | Microsoft Corporation | ASP.NET Source |
| 233 | ARPI | N/A | Adobe Extension |
| 234 | ARS | Adobe Systems | After Effects Render Settings Format |
| 235 | ARSC | Google | Google Android Resource Format |
| 236 | ART | Bernina | Bernina Artista Embroidery Format |
| 237 | ART50 | BERNINA International AG | BERNINA V5.0 Embroidery Software Designs |
| 238 | ART60 | BERNINA International AG | BERNINA V6.0 Embroidery Software Designs |
| 239 | ARU | N/A | Autorun.aru Malicious |
| 240 | ARV | Microsoft Corporation | Microsoft Autoroute User Information |
| 241 | ARW | Sony | Sony Digital Camera Image |
| 242 | ARXML | AUTOSAR | AUTOSAR XML |
| 243 | AS | Adobe Systems | ActionScript Format |
| 244 | ASA | N/A | ASP Configuration Format |
| 245 | ASAB | N/A | Repo temporary output data |
| 246 | ASAT | N/A | Assemble SAT 3D Model Format |
| 247 | ASAX | Microsoft | ASP.NET Application Optional Source Format |
| 248 | ASC | PGP | ASCII Text Format |
| 249 | ASCII | N/A | ASCII Text Format |
| 250 | ASCX | Microsoft | ASP.NET User Control Format |
| 251 | ASD | Microsoft | Word AutoSave Format |
| 252 | ASE | Adobe Systems | Adobe Swatch Exchange Format |
| 253 | ASEC | Google | Android Secure Application Format |
| 254 | ASEF | Adobe Systems Incorporated | Adobe Swatch Exchange |
| 255 | ASF | Microsoft | Advanced Systems (streaming) Format |
| 256 | ASHDISC | Ashampoo | Ashampoo Burning Studio Image |
| 257 | ASHX | Microsoft | ASP.NET Web Handler Format |
| 258 | ASL | Adobe Systems | Photoshop Style |
| 259 | ASM | N/A | Assembler Source Code Format |
| 260 | ASMX | Microsoft | ASP.NET Web Service Format |
| 261 | ASND | Adobe Systems | Adobe Sound Document |
| 262 | ASO | The Sage Group plc | Sage Accpac Simply ASO Import |
| 263 | ASP | Microsoft | Active Server Page |
| 264 | ASP+ | N/A | ASP.NET ASP+ file |
| 265 | ASPROJ | Microsoft Corporation | Microsoft Visual Studio Analysis Services Project |
| 266 | ASPX | Microsoft | Active Server Page Extended Format |
| 267 | ASR | Adobe Systems | ActionScript Remote Document |
| 268 | ASS | N/A | Aegisub Advanced Substation Alpha Format |
| 269 | ASSET | Unity Technologies | Unity Asset Format |
| 270 | ASSETS | Unity Technologies | Unity Asset File |
| 271 | AST | Adobe Systems | Adobe Color Separations Table |
| 272 | ASV | Adobe Systems | Adobe Photoshop Selective Color Format |
| 273 | ASX | Microsoft | Microsoft Advanced Streaming Redirector Format |
| 274 | AS_ | Microsoft Corporation | Winhelp Compressed |
| 275 | AT5 | Lowrance | Lowrance Map Format |
| 276 | ATC | Autodesk | AutoCAD Catalog Format |
| 277 | ATD | Microsoft Corporation | Microsoft Systems Management Server |
| 278 | ATF | Molecular Devices | Axon Text Format |
| 279 | ATN | Adobe Systems | Photoshop Actions Format |
| 280 | ATOM | N/A | Atom Web Feed Format |
| 281 | ATOMSVC | Microsoft | Atom Service Document |
| 282 | ATR | Atari | Atari Disk Image |
| 283 | ATT | N/A | Web Form Data Format |
| 284 | AU | Audacity | Audio Format |
| 285 | AU3 | AutoIt | AutoIt V3 Script |
| 286 | AUM | Adobe Systems Incorporated | Adobe Update Manager Data |
| 287 | AUPRESET | Apple, Inc. | Apple Logic Studio Preset |
| 288 | AVC | Kaspersky Lab | MPEG-4 AVC Advanced Video Coding Movie Format |
| 289 | AVG | AVG Technologies (Grisoft) | AVG Antivirus Virus Database |
| 290 | AVGCONFIG | N/A | AVG Antivirus configuration |
| 291 | AVGDX | AVG Technologies | AVG Diagnostics Format |
| 292 | AVHD | Microsoft | Hyper-V SnapShot Format |
| 293 | AVI | Microsoft | Audio Video Interleave Format |
| 294 | AVIF | Alliance for Open Media | AV1 Image |
| 295 | AVJ | Avira Operations | Avira Anti-Vir Job Format |
| 296 | AVM | AVG Technologies (Grisoft) | AVG Incremental Persistent |
| 297 | AVR | N/A | Audio Visual Research Format |
| 298 | AVS | AviSynth | AviSynth Script Format |
| 299 | AVT | Savy Soda | Savy Soda Avatar For IPhone Avatar |
| 300 | AWE | Adobe Systems Incorporated | Adobe Acrobat Bookmark XML |
| 301 | AWF | Adobe Systems Incorporated | Adobe WorkFlow Workgroup Plugin |
| 302 | AWG | Activeworlds | Activeworlds Object Group Format |
| 303 | AWS | Ability Plus Software | Ability Spreadsheet Format |
| 304 | AWW | Ability Plus Software | Ability Write Document |
| 305 | AXD | Microsoft | ASP.NET Web Handler Format |
| 306 | AXE | Microsoft | Microsoft Autoroute Map Format |
| 307 | AXF | N/A | ARM Executable Format |
| 308 | AXG | Microsoft Corporation | Microsoft AutoRoute Trip |
| 309 | AXL | N/A | XML Project |
| 310 | AXS | N/A | ActiveX Script |
| 311 | AXT | Adobe Systems | Adobe Photoshop Extract Format |
| 312 | AZW | Amazon | Amazon Kindle EBook Format |
| 313 | AZW1 | Amazon | Amazon Topaz EBook |
| 314 | AZW3 | Amazon | Amazon KF8 EBook Format |
| 315 | AZW4 | Amazon | Amazon Print Replica EBook |
| 316 | AZW6 | N/A | Amazon Kindle eBook |
