| Extension |
File Description |
|
Popularity |
| .256 | Descent 2 Color Palette File | | Rare |
| .8st | 8start Launcher File | | Rare |
| .a2m | TS-AudioToMIDI Settings File | | Average |
| .aam | Authorware Map File | | Average |
| .acrobatsecuritysettings | Adobe Acrobat Security Settings File | | Common |
| .acrodata | Acrobat Data File | | Uncommon |
| .acv | Photoshop Curves File | | Average |
| .aea | Ae Timer Alarm Document | | Uncommon |
| .ahl | eMule Metadata File | | Average |
| .ahs | Adobe Halftone Screen File | | Average |
| .ait | Adobe Illustrator Template | | Average |
| .alx | BlackBerry Application Loader XML File | | Average |
| .ams | Adobe Monitor Setup file | | Average |
| .application | ClickOnce Deployment Manifest File | | Common |
| .appref-ms | Microsoft Application Reference File | | Common |
| .arl | AOL Organizer File | | Rare |
| .arp | Advanced RAR Password Recovery Setup | | Average |
| .asl | Photoshop Style | | Average |
| .ast | Adobe Color Separations Table | | Average |
| .aswcs | Avast! Compressed Skin File | | Uncommon |
| .asws | Avast! Skin File | | Uncommon |
| .atf | Photoshop Transfer Function File | | Average |
| .atn | Photoshop Actions File | | Average |
| .atz | Aston Compiled Theme | | Average |
| .avs | AVS Preset File | | Average |
| .axp | CDBurnerXP Audio Compilation File | | Uncommon |
| .bau | OpenOffice.org AutoText File | | Average |
| .bcmx | Business Contact Manager Customization | | Average |
| .bcp | BlackMagic Custom Palette | | Average |
| .bgi | BgInfo Configuration File | | Average |
| .bks | NTBackup Settings File | | Average |
| .blob | Valve Steam Archive | | Average |
| .blt | AIM Buddy List | | Average |
| .boot | InstallShield Boot File | | Uncommon |
| .bxx | BS Contact Parameter File | | Uncommon |
| .c2r | Windows Media Center Click-To-Record File | | Common |
| .camp | WCS Color Appearance Model Profile File | | Average |
| .cdt | CorelDRAW Image Template | | Average |
| .cfg | Configuration File | | Very Common |
| .cfg | Citrix Server Connection File | | Average |
| .cgr | Quest3D Channel Group File | | Uncommon |
| .cha | Photoshop Channel Mixture | | Average |
| .chl | WinFast PVR2 Channel List | | Average |
| .clg | Windows Catalog File | | Common |
| .clr | CryptLoad Router Information File | | Average |
| .cm | Cable Modem Configuration File | | Rare |
| .cnf | Telnet Configuration File | | Average |
| .conf | Unix Configuration File | | Average |
| .cpx | Oracle ADF Binding Context File | | Average |
| .csf | Adobe Color Settings File | | Average |
| .ctb | AutoCAD Color-Based Plot Style File | | Common |
| .cui | AutoCAD Custom Workspace File | | Average |
| .cuix | AutoCAD Custom User Interface File | | Average |
| .cva | HP Systems Software Manager Information File | | Common |
| .cwf | CorelDRAW Workspace File | | Uncommon |
| .dbb | Skype User Information File | | Common |
| .dbg | FoxPro Debugger Configuration | | Average |
| .ddf | Diamond Directive File | | Common |
| .dicproof | Microsoft Dictionary Proofing File | | Uncommon |
| .dinfo | DivX Temporary Video Info File | | Uncommon |
| .directory | KDE Folder View Properties File | | Average |
| .dolphinview | Dolphin Folder View Settings File | | Average |
| .downloadhost | MSN Download Settings File | | Average |
| .dps | DivX Player 2 Skin File | | Rare |
| .drm | Cubase Drum Map File | | Average |
| .dsn | Database Source Name File | | Common |
| .dsw | Visual C++ 6 Workspace File | | Average |
| .ds_store | Mac OS X Folder Settings File | | Average |
| .dxp | CDBurnerXP Data Disc Compilation File | | Uncommon |
| .eftx | Office 2007 Theme Effect File | | Average |
| .env | WordPerfect Environment | | Average |
| .eqf | Winamp Equalizer Preset File | | Average |
| .eql | MathType Settings | | Average |
| .eqp | MathType Preferences | | Average |
| .eum | Enterprise User Monitor Configuration File | | Average |
| .ev3 | Everlock Options File | | Rare |
| .exe4j | Exe4j Configuration File | | Average |
| .exp | SonicWALL Preference File | | Uncommon |
| .fat | Zinf Theme File | | Uncommon |
| .fcc | Forms Credential Collector File | | Average |
| .fd | LaTeX Font Definition File | | Average |
| .fev | FLAMES Environment Variable File | | Average |
| .fmt | FoxPro Format File | | Average |
| .fnc | Frogans Player Network Certificate | | Average |
| .frc | Mandelbrot Explorer Color Settings File | | Uncommon |
| .frr | Mandelbrot Explorer Fractal Region Settings File | | Uncommon |
| .ft | Edgecam Feature Template | | Average |
| .fwt | FacetWin Configuration File | | Average |
| .gid | Windows Help Index File | | Average |
| .gin | GEMS Engine Control Unit File | | Average |
| .gps | GenePix Settings File | | Uncommon |
| .grd | Photoshop Gradient File | | Average |
| .growlticket | Growl Notification File | | Average |
| .gtp | GNOME Theme Package File | | Uncommon |
| .gwi | GroupWise Database Shortcut File | | Average |
| .gws | GeoMedia GeoWorkspace File | | Average |
| .gxt | Grand Theft Auto Text File | | Average |
| .hid | Sony Ericsson Remote Settings File | | Average |
| .hme | Windows Mobile Theme File | | Common |
| .iaf | Microsoft Outlook Settings File | | Rare |
| .ica | Citrix ICA File | | Average |
| .icc | ICC Profile | | Common |
| .icd | Installable Client Driver File | | Average |
| .icm | Image Color Matching Profile | | Average |
| .iconpackage | IconPackager Theme File | | Average |
| .idf | MIDI Instrument Definition File | | Average |
| .igr | Quest3D Channel Group Layout File | | Uncommon |
| .ihw | IN-HEH Timeline Workspace | | Average |
| .iip | ThinAnywhere Configuration File | | Average |
| .iip | Install Creator Pro Settings File | | Uncommon |
| .iit | Install Creator Settings File | | Uncommon |
| .inf | Setup File or Installer Script | | Average |
| .ini | Windows Initialization File | | Very Common |
| .ini | Gravis UltraSound Bank Setup File | | Average |
| .ini | Symbian OS Configuration File | | Average |
| .iptheme | IconPackager Raw Theme File | | Average |
| .isp | IIS Internet Service Provider Settings | | Average |
| .iss | InstallShield Silent Response File | | Average |
| .iss | Inno Setup Script | | Uncommon |
| .itt | IconTweaker Theme File | | Average |
| .ix | dtSearch Index File | | Uncommon |
| .jsf | Project64 Joystick File | | Uncommon |
| .jws | Java Workspace Settings File | | Average |
| .key | Keyboard Definition File | | Average |
| .keychain | Mac OS X Keychain File | | Very Common |
| .kyb | Keyboard Layout | | Average |
| .kys | Adobe Photoshop CS Keyboard Shortcut File | | Average |
| .lang | Skype Language File | | Uncommon |
| .lay | Rhino 3D Layer State File | | Uncommon |
| .lay | MAME Layout File | | Uncommon |
| .lbu | Cloaked Affiliate Link Builder Settings File | | Uncommon |
| .lgt | Let's Go! Theme File | | Rare |
| .lic | Software License | | Average |
| .lily | PCSX2 LilyPad Configuration File | | Uncommon |
| .lop | Mastercook Layout File | | Average |
| .lva | Logitech Video Effects Avatar File | | Average |
| .lvf | Logitech Video Effects File | | Average |
| .m2s | Maxthon 2 Browser Skin File | | Average |
| .mailhost | MSN Mailhost Settings File | | Average |
| .material | Rigs of Rods Texture Reference File | | Uncommon |
| .mcl | Windows Media Center Link File | | Average |
| .mdp | Visual C++ 5 Workspace File | | Uncommon |
| .mgm | MGCSoft Equation Illustrator Macro | | Average |
| .mgtheme | MacGourmet Theme File | | Uncommon |
| .mlk | Mastercook Look File | | Average |
| .mns | AutoCAD Interface Settings File | | Average |
| .mnu | TomTom Menu File | | Uncommon |
| .mnu | AutoCAD Interface Layout File | | Average |
| .mof | Managed Object Format File | | Average |
| .mpdconf | Music Player Daemon File | | Uncommon |
| .msf | Miranda IM Skin File | | Uncommon |
| .mskn | MediaMonkey Skin File | | Average |
| .msm | Windows Installer Merge Module | | Average |
| .msn | Host Blocking File | | Average |
| .mst | Corel Presentations Master Template File | | Uncommon |
| .mtf | Motorola Theme File | | Average |
| .mxcs | Mandelbrot Explorer Color Scheme File | | Uncommon |
| .mxfr | Mandelbrot Explorer Fractal Region File | | Uncommon |
| .nd | QuickBooks Network Data File | | Average |
| .ndc | Personal Communications Settings File | | Average |
| .nji | Nero Job Information File | | Average |
| .ntc | Camera Control Pro Custom Curves File | | Uncommon |
| .nts | Lotus Notes Traveler Server Config File | | Rare |
| .nvc | Nikon Vignette Correction File | | Average |
| .nwv | Dragon NaturallySpeaking User Archive | | Average |
| .obi | Outlook RSS Subscription File | | Common |
| .oce | Open Catalog Extension Connection File | | Uncommon |
| .odc | Office Data Connection File | | Average |
| .oem | OEM Setup File | | Average |
| .ops | Office Profile Settings File | | Average |
| .opt | Options File | | Average |
| .oss | Microsoft Outlook Saved Search File | | Average |
| .ovpn | OpenVPN Configuration File | | Average |
| .p2m | PhotoWorks Appearance File | | Average |
| .pc3 | AutoCAD Plotter Configuration File | | Average |
| .pen | Paint Shop Pro Pen Preset File | | Average |
| .ph | AOL Phone Home Settings File | | Uncommon |
| .phb | PhtotoBase Album File | | Uncommon |
| .pie | GlovePIE Controller Script | | Average |
| .pip | Office Personalized Settings File | | Average |
| .pkg | Symbian Package File | | Average |
| .plist | Mac OS X Property List File | | Average |
| .pls | PicoLog Settings File | | Rare |
| .pmc | Performance Monitor Counter File | | Average |
| .pmj | Pegasus Mail Configuration File | | Average |
| .pmp | AutoCAD Plot Model Parameter File | | Average |
| .pra | Windows Media 9 Plug-in Profile File | | Rare |
| .pref | Macintosh Preferences File | | Average |
| .prf | Outlook Profile File | | Very Common |
| .prf | Director Preferences File | | Average |
| .prf | ClarisWorks Preference File | | Uncommon |
| .prf | FileNet eForms Form Preferences File | | Uncommon |
| .profimail | ProfiMail Settings File | | Average |
| .propdesc | Property Description | | Average |
| .properties | Java Properties File | | Common |
| .props | Visual Studio Project Property File | | Average |
| .prs | Batch & Print Pro Printer Settings File | | Uncommon |
| .prx | Windows Media Profile | | Common |
| .psf | Photoshop Proof Settings File | | Common |
| .ptf | PSP Theme File | | Average |
| .pvs | Parallels Desktop Configuration File | | Average |
| .pws | Painter Workspace File | | Uncommon |
| .q2d | Quick 3D Cover Design File | | Uncommon |
| .qf | Nokia Maps Version File | | Average |
| .qss | Qt Style Sheet | | Average |
| .qtp | QuickTime Preferences File | | Average |
| .rb | Rosebud Profile | | Average |
| .rb4 | RobotWorks Parameters File | | Uncommon |
| .rct | Visual Studio Resource Template | | Average |
| .rdf | Resource Description Framework File | | Common |
| .rdo | Xerox Rawster Document Object File | | Average |
| .rdp | Remote Desktop Configuration File | | Uncommon |
| .reg | Registration Information File | | Common |
| .rfq | RoboForm SearchCard File | | Average |
| .rll | Microsoft Resource Library | | Average |
| .rms | Java Application Settings File | | Uncommon |
| .rmskin | Rainmeter Skin File | | Common |
| .rnx | RealPlayer Settings File | | Uncommon |
| .rpb | Radmin Phonebook File | | Uncommon |
| .rpk | RadLight Media Player Skin | | Average |
| .rps | 3ds Max Render Preset Settings | | Average |
| .rrr | Rhapzodé Resource Repository | | Average |
| .rts | RoyalTS Remote Connection File | | Average |
| .ruleset | Visual Studio Code Analysis Rule Set File | | Average |
| .sbv | YouTube Captions File | | Average |
| .set | Settings File | | Average |
| .set | Document Library Property Set File | | Average |
| .settings | Visual Studio Settings File | | Average |
| .sfo | CuteFTP Search File | | Average |
| .sif | Windows Setup Information File | | Average |
| .ski | Motorola Phone Skin File | | Average |
| .skin | InstallShield Skin File | | Uncommon |
| .skin | ASP.NET Skin File | | Average |
| .skn | Symbian OS Skin File | | Average |
| .skz | SuperKaramba Theme | | Average |
| .sl | Software License File | | Average |
| .slt | Mozilla User Profile Folder | | Average |
| .sol | Flash Local Shared Object File | | Average |
| .spf | SlingPlayer Favorites File | | Average |
| .srf | Steinberg Resource File | | Average |
| .srs | Outlook Send/Receive Settings File | | Average |
| .sss | WindowBlinds Substyle File | | Average |
| .stb | AutoCAD Plot Style Table File | | Common |
| .ste | Dreamweaver Site Settings File | | Common |
| .stf | Microsoft Setup Table File | | Rare |
| .style | SketchUp Style | | Common |
| .sw2 | Softwrap License File | | Average |
| .sz | Winamp Classic Skin Download | | Uncommon |
| .t3d | TicTacTi Advertisement Definition File | | Uncommon |
| .tdf | Title Definition Format File | | Average |
| .the | Microsoft Plus! Theme File | | Average |
| .theme | GTK Theme Index File | | Uncommon |
| .themepack | Windows 7 Theme Pack | | Common |
| .thmx | Office 2007 Theme File | | Common |
| .trx | PASSOLO Translation List File | | Average |
| .tsk | Pocket PC Skin | | Average |
| .tsm | TwinCAT System Manager Configuration File | | Average |
| .tst | TagScanner Text Transform Script | | Uncommon |
| .tsz | Trillian Skin File | | Average |
| .twc | TTWin Configuration File | | Average |
| .typeit4me | TypeIt4Me Clippings File | | Uncommon |
| .udcx | Universal Data Connection File | | Average |
| .uis | WindowBlinds User Interface Specification | | Average |
| .user | Visual Studio Project User Options File | | Uncommon |
| .userprofile | Norton Antivirus User Profile File | | Average |
| .utz | UIQ Theme Package | | Common |
| .vcpref | Norton Antivirus Preferences File | | Average |
| .vcprops | Visual Studio Property Sheet File | | Average |
| .vcw | eMbedded Visual C++ Workspace File | | Uncommon |
| .vmtm | VMware Team Data File | | Average |
| .vmx | Cubase Mixer Settings File | | Average |
| .vmx | VMWare Configuration File | | Common |
| .vnc | VNC Configuration File | | Average |
| .vph | VirtualPhotographer Custom Settings | | Uncommon |
| .vssettings | Visual Studio Settings File | | Average |
| .vsw | Visio Workspace File | | Average |
| .vue | FoxPro 2.x View Settings | | Average |
| .wcz | Chameleon Clock Wallpaper File | | Average |
| .wfc | Windows Wireless Network Settings FIle | | Common |
| .wms | Windows Media Skin | | Average |
| .wmz | Compressed Windows Media Player Skin | | Average |
| .wpp | WordPerfect Color Palette | | Average |
| .x4k | XML4King Configuration File | | Rare |
| .xcu | OpenOffice.org Configuration File | | Average |
| .xdr | XML-Data Reduced File | | Uncommon |
| .xem | eManager Metered Units | | Average |
| .xep | eManager File Packaging Information | | Average |
| .xes | eManager Skins Definition | | Average |
| .xet | eManager Process Definition | | Average |
| .xev | eManager Auto-Update File | | Average |
| .xgs | XACT Global Settings File | | Uncommon |
| .xlb | Excel Toolbars File | | Average |
| .xpaddercontroller | Xpadder Controller Profile | | Average |
| .xpl | LcdStudio Playlist File | | Uncommon |
| .xst | WebSphere Query Template | | Uncommon |
| .xtreme | Winstep Xtreme Theme Pack | | Average |
| .xwk | Crosstalk Communicator Keyboard Mapping File | | Rare |
| .zap | Software Installation Settings | | Uncommon |
| .zon | Collection Building Custom Zone File | | Average |
| .zpi | PDF Converter Index File | | Uncommon |
