Settings File Types - File extensions used for settings files.
| 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 | |
| .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 | |
| .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 | |
| .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 | Photoshop Color Settings | Average | |
| .ctb | AutoCAD Color-Based Plot Style File | Common | |
| .cui | AutoCAD Custom Workspace File | Average | |
| .cva | HP Systems Software Manager Information File | Common | |
| .cwf | CorelDraw Workspace File | Average | |
| .dbb | Skype User Information File | Average | |
| .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++ Workspace File | Average | |
| .ds_store | Mac OS X Folder Settings File | Average | |
| .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 | |
| .fev | FLAMES Environment Variable File | Average | |
| .fmt | FoxPro Format File | Average | |
| .fnc | Frogans Player Network Certificate | 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 | |
| .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 | |
| .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 | |
| .isp | IIS Internet Service Provider Settings | Average | |
| .iss | InstallShield Silent Response File | Average | |
| .iss | Inno Setup Script | Uncommon | |
| .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 | |
| .lbu | Cloaked Affiliate Link Builder Settings File | Uncommon | |
| .lic | Software License | Average | |
| .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 | |
| .mgm | MGCSoft Equation Illustrator Macro | Average | |
| .mlk | Mastercook Look 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 | |
| .mwx | MapGuide Author Map Window XML File | Common | |
| .nd | QuickBooks Network Data File | Average | |
| .ndc | Personal Communications Settings File | Average | |
| .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 | |
| .oem | OEM Setup File | Average | |
| .ops | Office Profile Settings File | Average | |
| .opt | Options 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 | |
| .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 | |
| .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 | |
| .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 | |
| .qf | Nokia Maps Version File | Average | |
| .qss | Qt Style Sheet | Average | |
| .qtp | QuickTime Preferences File | Average | |
| .rb | Rosebud Profile | 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 | |
| .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 | |
| .sbv | YouTube Captions File | Average | |
| .set | Settings File | Average | |
| .set | Document Library Property Set File | Average | |
| .sfo | CuteFTP Search File | Average | |
| .sif | Windows Setup Information File | Average | |
| .ski | Motorola Phone Skin File | Average | |
| .skin | InstallShield 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 | |
| .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 | |
| .style | ArcGIS Style Manager File | Average | |
| .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 | |
| .tsz | Trillian Skin File | Average | |
| .twc | TTWin Configuration File | Average | |
| .typeit4me | TypeIt4Me Clippings File | Uncommon | |
| .uis | WindowBlinds User Interface Specification | Average | |
| .userprofile | Norton Antivirus User Profile File | Average | |
| .vcpref | Norton Antivirus Preferences File | Average | |
| .vmtm | VMware Team Data File | Average | |
| .vmx | Cubase Mixer Settings | Average | |
| .vmx | VMWare Configuration File | Average | |
| .vnc | VNC Configuration File | Average | |
| .vph | VirtualPhotographer Custom Settings | Uncommon | |
| .vsw | Visio Workspace File | Average | |
| .vue | FoxPro 2.x View Settings | 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 | |
| .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 | Average | |
| .zon | Collection Building Custom Zone File | Average | |
| .zpi | PDF Converter Index File | Uncommon |
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