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Filetype description |
 | FILExt | $$$ | Used by OS/2 to keep track of archived files |
| | FILExt | 000 | (000-999) Used to number backup versions of files or used to number related data files for multiple users of a small-scale PC application |
| | FILExt | AAS | Movie Clip Autodesk Animation Setup used by Compton's Reference Collection |
 | DotWhat | ADD | Adapter driver file used in the boot process |
 | File Extensions | ATY | 3D Topicscape file used for a round-trip re-import |
| | FILExt | AUD | Audio File Used by Westwood Studios for Various Games |
| | FILExt | BIN | MacBinary Archive Format Often used on Macintosh. |
| | DotWhat | BTM | Batch file used by Norton Utilities |
| | FILExt | CCL | PDP-10 Concise Command Language (Used by COMPIL.EXE to Talk to Compilers) |
| | FILExt | CDKEY | Protocol Used in Communicating from MediaRemote Server to PC MediaRemote Plug-in |
| | FILExt | CNF | Configuration File Used by Telnet Windows and other applications with varying internal formats. |
| | DotWhat | DPKG | Proprietary file used to program AAC devices |
| | FILExt | EXE | Out-of-process Code Component Used by COM Clients (Microsoft Corporation) |
| | File Extensions | FUC | Frequently Used Commands script |
| | DotWhat | GLF | 3D font used by glf |
 | Wikipedia | GRDNT | Image format used in the core of some very obscure customized operating systems to represent gradients - see also SCTOR |
| | FILExt | H__ | C++ Header Seldom used C++ Header (same as H++ and H) |
| | FILExt | HM | Windows Help Context IDs used by MAKEHM.EXE. |
| | DotWhat | HM | Windows Help context IDs used by MAKEHM |
| | FILExt | IDB | Database Used by Disassembler |
| | File Extensions | IDI | DB/TextWorks last-used settings |
| | File Extensions | INT | Intermediate Code used for syntax checking file |
| | FILExt | INT | Intermediate Code Used for Syntax Checking |
| | Wikipedia | IPC | Intellitec Program Configuration - used to configure vehicle electronics - Intellitec |
| | FILExt | LIB | Library Used by an Application |
| | Wikipedia | LIC | License file used by some programs to put their license on disk |
| | FILExt | MAP | Debug Info Used by Some Programming Languages |
| | Wikipedia | MAR | Mozilla ARchive - Mozilla Updater (used to house binary updates to products) |
| | Wikipedia | MIS | Mission, used by many games |
| | File Extensions | MRU | Most Recently Used data |
| | FILExt | MTX | Temporary File often used by a Browser or TWAIN Device |
| | Wikipedia | NDS | Nintendo DS ROM file used for Homebrew and commercial (Game) files on DS - Nintendo DS |
| | DotWhat | NEZ | Emulator file used for game consoles |
| | Wikipedia | NMF | Node Map File - Used by SpicyNodes |
| | DotWhat | ODA | Used with OCX |
| | FILExt | ODA | Used with OCX |
| | FILExt | OEM | OEM Data Used During Device Install |
| | Wikipedia | OPT | Options - name used by many programs for configuration information |
| | DotWhat | PBL | Library file used in a development environment |
| | Wikipedia | PLIST | Mac OS Property List, also used on iOS, NeXTSTEP, and GNUstep - Apple's Property List Editor |
| | File Extensions | PM | Pegasus Mail frequently used data |
| | FILExt | PM | Pegasus Mail Frequently Used File (David Harris) |
| | DotWhat | PRL | seldom used for |
| | Wikipedia | PRO | Profile - used by many programs to store configuration data |
| | Wikipedia | REP | Report file used by many applications |
| | Wikipedia | RPB | Data report file used by CP Backup - CP Backup |
| | Wikipedia | RPT | Report file used by many applications |
| | Wikipedia | RSL | Resource Library used by PC Tools for Windows - PC Tools - Win |
| | FILExt | RUF | ProWORX Nxt Address Used Tables Reference (Schneider Electric) |
| | Wikipedia | RUNZ | pseudo-executable file, used in Portable Apps and software installers for Super OS - RUNZ Framework |
| | Wikipedia | SCTOR | Raster graphics format used by some very obscure custom operating systems |
| | Wikipedia | SET | Extension used by Norton Backup and CPS Backup for setup info - Norton Backup - CPS Backup |
| | Wikipedia | SKY | SYLK Spreadsheet file (used by Multiplan) |
| | Wikipedia | STY | Ami Pro Template (Style) - used by other programs for `styles` - Ami Pro |
| | Wikipedia | TBL | Short for Table - used by many programs |
| | Wikipedia | THM | Thumbnail or Theme File - Picture Publisher, PhotoMagic, Canon Digital Cameras, and Sony Digital Cameras create these Thumbnail files - also used for Sony Ericsson Theme File, for a cell phone |
| | DotWhat | TNY | TiNY bitmap image used on Atari |
| | Wikipedia | TRK | Track (i.e. video sequence), used by many games |
| | Wikipedia | UNV | Text file containing finite elements nodal coordinates and more See notes - Originally used by SDRC for its I-deas software - a lot of simulation software use it today |
| | Wikipedia | W3D | Westwood 3D object format - 3D models used in Renegade and Generals |
| | Wikipedia | WAR | Java Web Archive - A Java file format used to package and deploy web applications |
| | Wikipedia | XA | XA audio file - used in SimCity 3000 by Maxis, also by Sony PlayStation |
| | Wikipedia | XAR | Xara graphics file - Files created by Xara Photo & Graphic Designer (formerly Xara Xtreme and Xara Studio) - early versions used the extension ART |
| | Wikipedia | XMC | Assisted contact lists file format, based on xml and used in kindergartens and schools - Classmates iPhone app |
Found 64 item(s). Click on the websites' links above for the details!
