Misc File Types - File extensions used for misc files.
| Extension | File Description | Popularity | |
| .!ut | uTorrent Incomplete Download | Average | |
| .000 | Windows CE Installation Data File | Average | |
| .001 | SplitJoin Split File | Average | |
| .001 | 001 File Joiner & Splitter File | Uncommon | |
| .001 | 001 File Manager Split File | Uncommon | |
| .83p | TI-83 Calculator File | Average | |
| .8xp | TI-83 Plus Calculator File | Average | |
| .aawdef | Ad-Aware Definitions File | Average | |
| .abr | Adobe Photoshop Brushes File | Average | |
| .ac$ | AutoCAD Temporary File | Average | |
| .acb | AOL Cab Launcher | Average | |
| .acl | AutoCorrect List File | Average | |
| .acs | Agent Character File | Average | |
| .acsm | Adobe Content Server Message File | Common | |
| .ad | After Dark Screensaver | Uncommon | |
| .add | Dynamics AX Developer Documentation File | Average | |
| .adi | Dynamics AX Developer Documentation Index File | Average | |
| .adm | Portfolio Admin-Level Access Flag | Average | |
| .afploc | Apple Filing Protocol Location | Average | |
| .agd | Agile Advantage E-mail Attachment | Rare | |
| .ahd | Dynamics AX Online Help Data File | Average | |
| .ahi | Dynamics AX Online Help Index File | Average | |
| .aif | Symbian Application Information File | Average | |
| .aim | AOL Instant Messenger Launch File | Average | |
| .alt | Dynamics AX Temporary File | Average | |
| .aod | Dynamics AX Object Data File | Average | |
| .aoi | Dynamics AX Application Object Index File | Average | |
| .aol | America Online File | Average | |
| .apf | Adobe Profile File | Average | |
| .arr | Advanced RAR Password Recovery Project | Average | |
| .atz | Atomic Time Zone File | Average | |
| .avl | ArcView Legend File | Average | |
| .awc | Emulex AWC Firmware Update File | Rare | |
| .awd | Award BIOS Update File | Rare | |
| .bc | BitComet Partially Downloaded File | Average | |
| .bc! | BitComet Incomplete File | Average | |
| .bdr | Publisher Borders File | Average | |
| .bfc | Windows Briefcase File | Average | |
| .bnd | DB2 CLI Bind File | Uncommon | |
| .bootskin | Stardock Bootskin File | Average | |
| .bp2 | AutoCAD Batch Plot File | Average | |
| .bp3 | AutoCAD Batch Plot File | Average | |
| .bpl | AutoCAD Batch Plot File | Average | |
| .bst | BibTeX Style Document | Average | |
| .buf | Buffer File | Average | |
| .ca | Initial Telnet Cache | Rare | |
| .cache | Cache File | Average | |
| .calb | Coolect Album File | Average | |
| .cam | Gerber CAM Job File | Average | |
| .cbt | Computer Based Training File | Average | |
| .ceb | Apabi eBook File | Average | |
| .cfl | IMVU Product File | Average | |
| .chk | Saved File Fragment | Average | |
| .chw | Compiled Help Index File | Average | |
| .clkk | Clicker Keyboard | Average | |
| .clkt | Clicker Template | Average | |
| .clkw | Clicker Word Bank | Average | |
| .clkx | Clicker Grid Set | Average | |
| .clr | Flash Color Set | Average | |
| .cmm | Corel Multimedia Manager Album | Average | |
| .cnc | CNC Machine Tool Path | Average | |
| .cp3 | Grand Prix 3 Cockpit Shape File | Average | |
| .cpt | Pocket Slides Presentation | Rare | |
| .crc | Total Commander Checksum File | Average | |
| .csh | Photoshop Custom Shapes File | Common | |
| .ctf | Content Transformation File | Average | |
| .ctf | AVG Update Control File | Average | |
| .ctg | Canon Digital Camera Catalog File | Average | |
| .dal | Download Accelerator Plus URL List | Average | |
| .dap | Download Accelerator Plus Partial Download | Average | |
| .dat | Exchange E-mail Attachment | Average | |
| .db | Windows Thumbnail Cache | Common | |
| .dbv | Database Variable Field | Average | |
| .dbx | Outlook Express E-mail Folder | Very Common | |
| .dc1 | Bloomba E-mail Message | Average | |
| .dct | Dictionary File | Average | |
| .dctmp | DC++ Partially Downloaded File | Average | |
| .dcx | FoxPro Database Index | Average | |
| .dek | Memorize-It Flashcard Deck | Average | |
| .desktop | Desktop Entry File | Average | |
| .dgc | TurboTax Tax Form | Average | |
| .dic | Dictionary File | Average | |
| .diskdefines | Linux LiveCD Information File | Average | |
| .dlm | Akamai Download Manager File | Average | |
| .dnl | DNAML eBook File | Average | |
| .dpb | FaxMaster Document | Average | |
| .dqy | Excel Query File | Uncommon | |
| .dr | DRM Rights Object | Average | |
| .drc | DRM Rights Object | Average | |
| .dsc | CoolPix Disk Identification File | Average | |
| .dskin | DockX Skin | Uncommon | |
| .dst | Embroidery Format | Average | |
| .dstudio | DownloadStudio Incomplete Download | Average | |
| .dt_ | Macintosh Data Fork | Rare | |
| .dus | Readiris Font Dictionary | Average | |
| .dwc | Emulex DWC Firmware Update File | Uncommon | |
| .dwn | Firmware Update File | Uncommon | |
| .ebn | Philips Firmware Update File | Average | |
| .efl | External Format Language File | Uncommon | |
| .eml | Outlook Express Saved Mail Message | Common | |
| .eqn | WordPerfect Equation | Average | |
| .exd | Control Information Cache File | Average | |
| .ext | Norton Commander Extension | Average | |
| .eyb | Microsoft Encarta Yearbook Update File | Uncommon | |
| .fdr | Windows Error Report File | Average | |
| .file | Generic Windows File | Average | |
| .flf | Microsoft Dynamics NAV License File | Average | |
| .flp | Flash Project | Average | |
| .fls | ArcView GIS Windows Help Supporting File | Rare | |
| .fnc | QuickCAM 3D CNC File | Average | |
| .fpfv | File Protected From Virus | Average | |
| .fpk | JetForm FormFlow File | Average | |
| .frk | Macintosh Resource or Data Fork | Uncommon | |
| .frm | Form File | Average | |
| .frz | Locked FormFlow File | Average | |
| .ftil | e-Hastakshar Contract Note | Rare | |
| .ftploc | FTP Location | Average | |
| .fw | Firmware Update File | Average | |
| .gau | Flight Simulator Gauge File | Average | |
| .gbx | Gerber PCB File | Common | |
| .gg | Google Desktop Gadget File | Average | |
| .gly | Word Glossary File | Average | |
| .gp4 | CCITT Group 4 Fax File | Average | |
| .gp4 | Guitar Pro 4 Tablature | Average | |
| .gpg | GNU Privacy Guard Public Keyring | Uncommon | |
| .growlregdict | Growl Temp File | Average | |
| .gsp | Geometer's Sketchpad File | Uncommon | |
| .h1q | Microsoft Help Merged Query Index File | Rare | |
| .hex | Hexadecimal Source File | Average | |
| .hgl | HP Graphics Language File | Average | |
| .his | FindinSite Database Definition File | Uncommon | |
| .hlb | VMS / VAX Help Library | Rare | |
| .hlx | ATI Radeon Video Driver Support File | Average | |
| .hm3 | Help & Manual 3 Project | Average | |
| .hmx | Help & Manual 4 Project | Average | |
| .hs | Motorola Flash Flex File | Average | |
| .hus | Husqvarna Embroidery File | Average | |
| .icontainer | CandyBar iContainer File | Uncommon | |
| .id | Lotus Notes User ID File | Average | |
| .idlk | InDesign Lock File | Average | |
| .iix | Translation Memory Index File | Rare | |
| .iml | ACT! Internet Mail Message | Average | |
| .imy | iMelody Ringtone File | Average | |
| .in | Spyware File | Average | |
| .ind | Memory Stick Formatting File | Average | |
| .inetloc | Internet Location | Average | |
| .ing | MasterCook Ingredients File | Average | |
| .inm | FaxMaster Document | Average | |
| .ipsw | iPod and iPhone Software Update File | Average | |
| .isn | Installer Source Files | Uncommon | |
| .itc | iTunes Cover Flow Data File | Average | |
| .iva | Dementia.4207 Virus File | Rare | |
| .iws | InstallWatch Scan File | Average | |
| .jad | Java Application Descriptor File | Average | |
| .jc | FlashGet Partial Download | Average | |
| .jc! | FlashGet Incomplete Download | Average | |
| .jrs | Exchange Reserve Transaction Log File | Uncommon | |
| .key | Keynote Presentation | Common | |
| .khd | Dynamics AX Kernel Help Data File | Average | |
| .khi | Dynamics AX Kernel Help Index File | Average | |
| .kth | Keynote Theme | Average | |
| .kyr | Lotus Domino Key Ring File | Average | |
| .lck | Program Lock File | Average | |
| .ldb | Microsoft Access Lock File | Average | |
| .lid | Kodak EasyShare Album File | Average | |
| .link | iPod Link File | Average | |
| .linx | iPod Links Folder | Average | |
| .logonvista | LogonStudio Windows Vista Logon Screen | Average | |
| .logonxp | LogonStudio Windows XP Logon Screen | Average | |
| .loov | Smadav Virus Definitions File | Average | |
| .ltf | Frogans Shortcut File | Average | |
| .lwtp | LimeWire Theme Pack | Average | |
| .lxa | Microsoft Speech Lexicon File | Average | |
| .lyr | ArcView Layer File | Average | |
| .mab | Mozilla Address Book | Average | |
| .mad | Access Module | Average | |
| .maf | Microsoft Access Form | Average | |
| .mam | Microsoft Access Macro | Average | |
| .maq | Microsoft Access Query | Average | |
| .mar | Microsoft Access Report | Average | |
| .mas | Access Stored Procedures | Average | |
| .mat | Microsoft Access Table Shortcut File | Uncommon | |
| .mau | Media Attachment Unit | Average | |
| .mav | Access View File | Average | |
| .maw | Access Data Access Page | Average | |
| .mcfi | Maya Initial Fluid Cache File | Uncommon | |
| .mcfp | Maya Fluid Cache Playback File | Uncommon | |
| .mci | Media Control Interface | Average | |
| .mco | Live Messenger Winks File | Average | |
| .md5 | MD5 Checksum File | Average | |
| .mde | ArchiCAD Educational Version Module File | Average | |
| .mdf | Translation Memory Data Find File | Average | |
| .mdl | Flight Simulator Airplane Model | Average | |
| .mdw | Access Workgroup File | Average | |
| .mhs | Hardware Specification File | Average | |
| .mif | Management Information Format | Average | |
| .mls | CrystalPlayer Playlist | Average | |
| .mmo | Memory Map Overlay File | Average | |
| .mmp | MixMeister Playlist | Average | |
| .mnx | FoxPro Menu | Average | |
| .mod | ArchiCAD Module | Uncommon | |
| .mpcpl | Media Player Classic Playlist | Average | |
| .mps | Pocket Streets Map File | Average | |
| .mrk | DPOF Auto Print Order File | Average | |
| .ms-tnef | MS Transport Neutral Encapsulation Format | Average | |
| .msf | Mail Summary File | Average | |
| .msi | Windows Installer Package | Very Common | |
| .mso | Inline E-mail Attachment | Average | |
| .mso | Microsoft Office Macro Reference File | Average | |
| .mss | Software Specification File | Average | |
| .msu | Windows Vista Update Package | Average | |
| .mtd | Musicnotes Digital Sheet Music File | Common | |
| .mtf | MasterCook Tips | Average | |
| .mtf | Translation Memory Translations File | Average | |
| .mvi | AutoCAD Movie Command File | Average | |
| .mvs | Project Language and Simulation File | Average | |
| .mwf | Translation Memory Word Find File | Average | |
| .nav2 | WinAVI Temporary Navigation File | Average | |
| .nch | Outlook Express Folder File | Average | |
| .nick | Outlook 2000 Nickname File | Average | |
| .njb | Nikon Photo Index File | Average | |
| .nk2 | Outlook 2002 Nickname File | Average | |
| .nss | Magnetic Screensaver File | Average | |
| .nth | Nokia Series 40 Theme File | Average | |
| .nup | Smart Security Update File | Uncommon | |
| .nwm | Sony NWM Display Screen File | Average | |
| .nwp | Magnetic Wallpaper File | Average | |
| .ob! | Orbit Downloader Incomplete Download | Average | |
| .odf | OpenDocument Formula | Average | |
| .ods | Outlook Express 5 Mailbox | Average | |
| .olb | OLE Object Library | Average | |
| .ost | Outlook Offline Folder File | Average | |
| .otf | OpenDocument Formula Template | Average | |
| .otp | OpenDocument Presentation Template | Average | |
| .owg | OutWit Gear Database | Uncommon | |
| .owm | OutWit XML Mashup File | Uncommon | |
| .p2p | FolderShare Placeholder File | Average | |
| .pando | Pando File | Average | |
| .pap | Corel Painter Paper Texture | Uncommon | |
| .part | Partially Downloaded File | Very Common | |
| .pes | Brother Embroidery Format | Average | |
| .pgp | PGP Security Key | Average | |
| .pid | Process ID | Average | |
| .pla | iriver iQuickList File | Average | |
| .playset | Souptoys Playset File | Average | |
| .plsk | Messenger Plus! Live Skin Pack | Average | |
| .pmo | Pegasus Saved Message File | Uncommon | |
| .pnf | Precompiled INF File | Average | |
| .pnz | Panorama Database Set | Average | |
| .ppf | Paint Shop Pro Soft Plastic Preset File | Average | |
| .ppm_b | Nokia PPM Flash File | Rare | |
| .ppsm | PowerPoint Open XML Macro-Enabled Slide Show | Average | |
| .prb | xyAlgebra Probabilities File | Average | |
| .prc | Corel Presentation | Average | |
| .prs | PlayStation Radio Player Location | Rare | |
| .prt | Presentations Template | Average | |
| .psar | PSP Update File | Average | |
| .psf | HP-UX Product Specification File | Uncommon | |
| .psi | PrimalScript Online Help Shortcut | Average | |
| .pss | Picture and Sound Show File | Average | |
| .psw | Windows Password Reset Disk File | Average | |
| .pth | 4D Path Document | Average | |
| .ptr | Desktop Flash Intro Project File | Average | |
| .pvm | HP Photo Album | Average | |
| .pwrep | Password Repository File | Average | |
| .qxl | QuarkXPress Library | Average | |
| .rem | BlackBerry Encrypted Data File | Average | |
| .rjs | RealJukebox Skin File | Average | |
| .rmr | ResumeMaker File | Average | |
| .rnd | PGP Random Seed File | Average | |
| .rnd | Random Hash Data File | Average | |
| .rom | Read Only Memory Image | Average | |
| .rov | Report Object Variable | Average | |
| .rtc | Live Meeting Connection File | Average | |
| .rtm | LabVIEW Run-Time Menu File | Uncommon | |
| .rtp | TurboTax Update File | Average | |
| .sbk | Multimedia ToolBook System Book | Rare | |
| .scd | TurboTax Schedule Description | Average | |
| .scw | Score Writer Document | Average | |
| .scx | FoxPro Form | Average | |
| .sdd | StarOffice Presentation | Average | |
| .sec | PGP Secret Key Ring | Average | |
| .sew | Home Embroidery Format | Average | |
| .sfcache | ReadyBoost Cache File | Uncommon | |
| .sfv | Simple File Verification File | Average | |
| .shortcut | Asutype Shortcut | Uncommon | |
| .shw | Corel Presentation | Average | |
| .shx | Motorola Flash Superfile | Average | |
| .sis | Symbian Installation File | Average | |
| .sisx | Symbian OS Installation File | Average | |
| .skindex | Mail Index File | Average | |
| .skr | PGP Private Keyring | Average | |
| .slf | Symantec License File | Average | |
| .smm | Ami Pro Macro | Average | |
| .snm | Netscape Mail Index | Average | |
| .sqm | Service Quality Monitoring File | Average | |
| .sr0 | SecuROM Analysis File | Average | |
| .ssd | WindowBlinds Skin File List | Average | |
| .sslf | HLSW Shared Server List File | Average | |
| .sst | Serialized Certificate Store File | Uncommon | |
| .ssw | Sony Ericsson Firmware File | Average | |
| .std | CD/DVD Label Template | Average | |
| .sth | Lotus Domino Stash File | Average | |
| .sti | StarOffice Presentation Template | Average | |
| .stmb | Synclavier Timbre File | Average | |
| .svn-work | Subversion Cache File | Average | |
| .sxm | StarOffice Math File | Average | |
| .t$m | AVG Internet Security Temporary File | Uncommon | |
| .tag | DataFlex Query Tag | Average | |
| .tax | TurboTax Tax Return | Average | |
| .tbs | TuneUp Utilities Boot Screen | Average | |
| .tdl | MathType Translator Definition Language | Average | |
| .temp | Temporary (Temp) File | Average | |
| .thm | Sony Ericsson Theme File | Average | |
| .tip | TuneUp Utilities Icon Package | Average | |
| .tla | TuneUp Utilities Startup Logo | Average | |
| .tlb | OLE Type Library | Uncommon | |
| .tls | TuneUp Utilities Logon Screen | Average | |
| .tmb | Timbuktu Pro Document | Average | |
| .tnef | Transport Neutral Encapsulation Format | Average | |
| .toc | Eudora Table of Contents | Common | |
| .torrent | BitTorrent File | Very Common | |
| .tpl | Document Template | Average | |
| .tpm | Trusted Platform Module Password File | Average | |
| .tpm | Transformation Parameters Model File | Average | |
| .tps | Clarion TopSpeed Data File | Average | |
| .trc | Oracle Trace File | Average | |
| .tstream | SwarmPlayer Streaming Torrent | Average | |
| .ttx | Trados TagEditor File | Average | |
| .tub | Paint Shop Pro Picture Tube | Average | |
| .tvl | TurboTax File | Average | |
| .uls | NetMeeting User Location Service File | Average | |
| .unk | Unknown File | Rare | |
| .unknown | Unknown File Type | Average | |
| .vbt | Spyware Doctor Temporary Scan File | Common | |
| .vbt | iAntiVirus Temporary Scan File | Average | |
| .ver | Version Record | Rare | |
| .vfs | Virtual File System Index | Average | |
| .vir | Virus-Infected File | Average | |
| .vmg | Nokia Text Message | Average | |
| .vol | Volfs File System Directory | Average | |
| .vor | StarOffice Template | Average | |
| .vpa | VPchat Chat Gestures File | Average | |
| .vpc7 | Virtual Machine Package | Average | |
| .vpm | Vox Proxy Macro File | Uncommon | |
| .vs | Vivid Include File | Average | |
| .wal | Winamp Modern Skin | Average | |
| .wba | WindowBlinds Compressed Skin | Average | |
| .wcm | Microsoft Works Communications Script | Average | |
| .wpl | Windows Media Player Playlist | Average | |
| .wpm | WordPerfect Macro | Average | |
| .wsz | Winamp Classic Skin | Average | |
| .wwd | Works Wizard File | Average | |
| .wzmul | WinZip Registration File | Average | |
| .xlm | Excel Macro | Average | |
| .xlnk | XML Shortcut File | Average | |
| .xmp | Extensible Metadata Platform File | Average | |
| .xnk | Exchange Shortcut | Average | |
| .xol | Swiss Map Overlay | Average | |
| .xol | PowerDesigner Object Language File | Average | |
| .xpr | PressIt Disc Label | Average | |
| .xwf | OmniPage Workflow File | Average | |
| .xxx | Compucon Singer Embroidery File | Uncommon | |
| .ybk | Microsoft Encarta Yearbook File | Average | |
| .ymg | Yahoo! Messenger File | Average | |
| .yps | Yahoo! Messenger Data File | Very Common | |
| .z1 | ZoneAlarm Renamed VB File | Rare | |
| .zm1 | ZoneAlarm Renamed MDA File | Average | |
| .zm2 | ZoneAlarm Renamed MDZ File | Average | |
| .zm3 | ZoneAlarm Renamed NCH File | Average | |
| .zm9 | ZoneAlarm MailSafe Renamed Zip File | Uncommon | |
| .zml | Zooming Markup Language File | Average | |
| .ztf | DVD Label Template File | Average | |
| .ztr | DVD Label Template Media File | Average |
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