| File extension | Developer/Producer | File description |
|---|---|---|
| F file extension | N/A | Fortran Source Format |
| F#+A file extension | RagTime GmbH | RagTime Classic |
| F#+D file extension | RagTime GmbH | RagTime Classic |
| F+DB file extension | Microsoft Corporation | Microsoft FoxPro Database |
| F01 file extension | U.S. Army Corps of Engineers | HEC-RAS Flow |
| F02 file extension | U.S. Army Corps of Engineers | HEC-RAS Flow |
| F04 file extension | U.S. Army Corps of Engineers | HEC-RAS Flow |
| F05 file extension | U.S. Army Corps of Engineers | HEC-RAS Flow |
| F06 file extension | N/A | DOS Screen Text 6 Pixels Height Font |
| F08 file extension | N/A | DOS Screen Text 8 Pixels Height Font |
| F09 file extension | N/A | DOS Screen Text 9 Pixels Height Font |
| F10 file extension | N/A | DOS Screen Text 10 Pixels Height Font |
| F11 file extension | N/A | DOS Screen Text 11 Pixels Height Font |
| F12 file extension | N/A | DOS Screen Text 12 Pixel Height Font |
| F13 file extension | N/A | Dos Screen Text 13 Pixels Height Font |
| F16 file extension | N/A | DOS Screen Text 16 Pixels Height Font |
| F2B file extension | UniSoft | ProntoGERBER-CONNECTION Board Database |
| F2F file extension | Byteworx | Byteworx FMEA Exported Data |
| F2R file extension | N/A | Farandole Linear Module Format |
| F32 file extension | N/A | Floating Point Raw 32-bit IEEE Data |
| F3D file extension | Autodesk 360 | Fusion 3D Design |
| F3F file extension | Viva Media | Crazy Machines Font Data Format |
| F3R file extension | N/A | Farandole Blocked Linear Module Format |
| F4A file extension | Adobe Systems | Adobe Flash MP4 Audio Stream Format |
| F4B file extension | Adobe Systems Incorporated | Adobe Flash MP4 Audio EBook |
| F4F file extension | Adobe Systems | Flash Video Fragment |
| F4M file extension | Adobe Systems Incorporated | Adobe HTTP Dynamic Streaming Flash Media Manifest |
| F4P file extension | Adobe Systems | Adobe Flash Protected MP4 Format |
| F4V file extension | Adobe Systems | Adobe Flash Mp4 Format |
| F4X file extension | Adobe Systems Incorporated | Adobe HTTP Dynamic Streaming Index |
| F64 file extension | N/A | Floating Point Raw 64-bit IEEE Data |
| F90 file extension | N/A | Intel Fortran 90 Language Source Format |
| F95 file extension | N/A | Fortran 95 Language Source Code |
| FA file extension | N/A | FASTA DNA Data Format |
| FAC file extension | N/A | Facemaker Face Format |
| FACE file extension | N/A | UNIX FaceSaver Bitmap Image Format |
| FACEFX file extension | OC3 Entertainment | FaceFX Actor Format |
| FACEFX_INGAME file extension | OC3 Entertainment | FaceFX In-Game Actor Format |
| FACT file extension | EIAS3D | EIAS ElectricImage 3D |
| FACTORYPATH file extension | The Eclipse Foundation | Eclipse Factorypath |
| FAD file extension | Microsoft Corporation | Office Attribute Database |
| FADEIN file extension | GCC Productions Inc. | Fade In Screenwrite Document |
| FAE file extension | Microsoft Corporation | MS Office 97 Converter DLL |
| FAG file extension | N/A | Win32.AutoRun.fag |
| FAL file extension | N/A | Bitmap Graphics Image Header Information Q0 |
| FAM file extension | N/A | The Sims Family |
| FAMILYFILE file extension | Leister Productions | Reunion Family Format |
| FAN file extension | AutoDesSys | Form•Z Animation Format |
| FAR file extension | N/A | The Sims Archive Format |
| FAS file extension | Autodesk | AutoCAD Fast-load Auto LISP Format |
| FASTA file extension | N/A | FASTA Format DNA And Protein Sequence Alignment |
| FAT file extension | The Zinf Team | Zinf Theme Format |
| FATESAVEDGAME file extension | WildTangent, Inc. | Fate Save Game |
| FATEUNDISCOVEREDREALMSSAVEDGAME file extension | WildTangent, Inc. | Fate Undiscovered Realms Save Game |
| FAU file extension | N/A | Simulation Laboratory Creator Collapsed Fault List |
| FAV file extension | Microsoft Corporation | Microsoft Outlook Bar-shortcut |
| FAVORITE file extension | Apple, Inc. | Apple IDVD Favorite |
| FAVORITEMETADATA file extension | Panic | Transmit For Mac Login Data Format |
| FAX file extension | N/A | Fax File (generic Group 3 1bit Encoded Data) |
| FB file extension | DRDOS, Inc. | DR-DOS Backup |
| FB! file extension | FlashGet | FlashGet Incomplete Download |
| FB1 file extension | N/A | FAWAVE Binary |
| FB2 file extension | FictionBook | FictionBook EBook Format |
| FBC file extension | Ancestry.com | Family Tree Compressed Backup Format |
| FBD file extension | FlowBiz | FlowBiz Workflow Designer Procedure Document |
| FBF file extension | Promosoft | Free Backup Fix Backup Format |
| FBG file extension | Advanced Geo Positioning Solutions, Inc. | Shape Pro Ground Surface |
| FBI file extension | Cavedog Entertainment | Total Annihilation Main Unit Definition |
| FBK file extension | Microsoft | Microsoft Dynamics NAV Backup Format |
| FBL file extension | TranscenData | CADfix Log Format |
| FBM file extension | Michael L. Mauldin | Fuzzy Bitmap Image Format |
| FBN file extension | Esri | ArcView Spatial Index |
| FBND file extension | Apple, Inc. | Apple Communication Tool |
| FBOK file extension | N/A | Adobe FrameMaker Book |
| FBP file extension | wxFormBuilder | WxFormBuilder Project Format |
| FBP7 file extension | VSoft Technologies | FinalBuilder 7 Project |
| FBPROJ file extension | Mediaparts Interactive | FlippingBook Photo Album Project |
| FBQ file extension | Frozenbyte, Inc. | Trine 2 Game Archive |
| FBR file extension | Blueberry | BB FlashBack Recorded Video Format |
| FBRB file extension | Electronic Arts | Battlefield Bad Company 2 Game Format |
| FBS file extension | Builders Exchange of Washington, Inc. | Fastbid |
| FBT file extension | ABBYY | ABBYY FineReader Document Options Format |
| FBU file extension | FEBE | FEBE Firefox Add-in ZIP Format |
| FBV file extension | VSoft Technologies Pty Ltd | FinalBuilder Persistent Variables |
| FBW file extension | Hewlett Packard | HP Backup Split Backup Format |
| FBX file extension | Autodesk | Autodesk FBX Interchange Format |
| FBZ file extension | Blueberry | BB FlashBack Screen Record Format |
| FBZ6 file extension | VSoft Technologies Pty Ltd | FinalBuilder Compressed Project |
| FBZ7 file extension | VSoft Technologies | Compressed FinalBuilder 7 Project |
| FC13 file extension | N/A | FutureComposer Audio |
| FC14 file extension | N/A | FutureComposer Audio |
| FC2 file extension | Smith Micro | Poser Face Pose Format |
| FC2MAP file extension | Ubisoft | Far Cry 2 User Map Format |
| FCA file extension | TigerLogic Corp. (Omnis Technology Corporation) | Omnis Web Client |
| FCB file extension | Fonix Corporation | FAAST Builder |
| FCC file extension | Netegrity | SiteMinder Forms Credential Collector Format |
| FCD file extension | N/A | First Choice Database |
| FCDT file extension | Adobe Systems | Adobe FormsCentral Form Template Format |
| FCE file extension | EaSynth Solution | ForeUI Custom Element Format |
| FCF file extension | Final Draft | Final Draft Document Format |
| FCG file extension | N/A | FastCGI Script |
| FCGI file extension | FastCGI | FastCGI Script Format |
| FCHC file extension | Fetch Softworks | Fetch Cache |
| FCHK file extension | Gaussian, Inc. | Gaussian Checkpoint |
| FCHP file extension | Fetch Softworks | Fetch Preference |
| FCL file extension | EaSynth Solution | ForeUI Custom Library Format |
| FCM file extension | fCraft | FCraft World Format |
| FCOD file extension | Adobe Systems Incorporated | Adobe PageMaker Filter |
| FCP file extension | Apple | Final Cut Pro Project Format |
| FCPA file extension | Michigan Department of Community Health | Officer Cost Report Data |
| FCPR file extension | Michigan Department of Community Health | Officer Cost Report Data |
| FCPROJECT file extension | Apple | Final Cut Pro X Project Format |
| FCR file extension | Michigan Department of Community Health | Cost Report Data |
| FCS file extension | N/A | First Choice Spreadsheet |
| FCSTD file extension | FreeCAD | FreeCAD Drawing Format |
| FCT file extension | Salty Brine Software | FolderClone Task List Format |
| FCW file extension | Evolution Computing | FastCAD CAD Format |
| FCXE file extension | SPIRIT | FileCapsule Deluxe Encoded |
| FCXR file extension | SPIRIT | FileCapsule Deluxe |
| FCXU file extension | SPIRIT | FileCapsule Deluxe |
| FCZ file extension | Smith Micro | Poser Compressed Face Pose Format |
| FD file extension | N/A | LaTeX Font Definition Format |
| FD1 file extension | Microsoft Corporation | Windows Live Photo Gallery Thumbnail Database |
| FD2 file extension | Epson | Epson EasyPrint PictureMate Borders Format |
| FDA file extension | Relic Entertainment | Warhammer 40,000 Audio Format |
| FDB file extension | N/A | Portfolio Catalog Format |
| FDC file extension | Autodesk | Autodesk AutoCAD Field Catalogue Format |
| FDD file extension | Parallels | Parallels Virtual Machine Floppy Disk Drive Image |
| FDE file extension | Ternion Corporation | FLAMES Dataset Export |
| FDF file extension | Adobe Systems | Adobe Acrobat Portable Document Input Form |
| FDI file extension | N/A | Floppy Disk Image |
| FDK file extension | Fluentizer LLC | Fluentizer Fluent Dictionary |
| FDL file extension | Corel Corporation | Corel Paradox Secondary Index |
| FDLANG4 file extension | NewsGator Technologies, Inc. | FeedDemon Language Resource |
| FDM file extension | Microsoft | Microsoft Exchange Server Form Message Format |
| FDML file extension | N/A | Forms Definition Markup Language |
| FDOC file extension | Microsoft Corporation | Microsoft XPS Document Settings |
| FDP file extension | N/A | MySafe Encrypted Data |
| FDPART file extension | Freshdevices Corp. | Fresh Download Partial Downloaded |
| FDR file extension | N/A | Final Draft Document Format |
| FDRP file extension | Apple, Inc. | Apple Mac OS Folder Alias |
| FDRTEMPLATES file extension | AGS Technik | FDRTools Template |
| FDS file extension | Safe Software | FME Desktop Custom Format |
| FDSEQ file extension | Dolphin Futures Limited | XPS Document Related Data |
| FDSRCH2 file extension | NewsGator Technologies, Inc. | FeedDemon Search Data |
| FDT file extension | Final Draft | Final Draft Script Attributes Format |
| FDU file extension | Software AG | Natural Security |
| FDW file extension | NELFO | FEBDOK Document |
| FDX file extension | Final Draft | Final Draft XML Document Format |
| FDXSL4 file extension | NewsGator Technologies, Inc. | FeedDemon Newspaper Style |
| FDXT file extension | Final Draft | Final Draft 8 Template Format |
| FEATURE file extension | Microsoft | Microsoft Visual Studio SharePoint Feature Format |
| FEB file extension | Corel Corporation | Corel WordPerfect Figure Editor Button Bar |
| FED file extension | Rastislav KORYTAR | FORMIK Form Data |
| FEED-MS file extension | N/A | Microsoft Rss Feed Store |
| FEEDBACK file extension | Microsoft | Expression SketchFlow Feedback Format |
| FEEDSDB-MS file extension | N/A | Microsoft RSS Feeds Store |
| FEM file extension | DHI-WASY GMBH | FEFLOW FEM Problem |
| FES file extension | 3D-Scape | Fileless Occurrence Placeholder |
| FET file extension | N/A | Free Timetabling Software |
| FEV file extension | Ternion | FLAMES Environment Variable Format |
| FEX file extension | Information Builders | WebFOCUS FOCUS Web390 Procedure |
| FEXT file extension | Apple, Inc. | Extensions Manager Preferences |
| FEZ file extension | FUND E-Z Development Corporation | FUND E-Z Backup Archive |
| FF file extension | Activision | Call Of Duty FastFile Format |
| FF0 file extension | RISCOS Ltd. | RISC OS TIFF Bitmap Image |
| FF2 file extension | AceBIT GmbH | Hello Engines! |
| FF6 file extension | RISCOS Ltd. | RISC OS Encapsulated PostScript |
| FF9 file extension | RISCOS Ltd. | Acorn RISC OS Bitmap Image Sprite |
| FFA file extension | Microsoft | Find Fast Indexer Status Format |
| FFD file extension | N/A | Flat File Description |
| FFDATA file extension | ABBYY | ABBYY Eform |
| FFF file extension | N/A | Gravis Ultrasound PnP Bank Format |
| FFIL file extension | Apple | Mac OS X Data Fork Suitcase Format |
| FFINDEX file extension | N/A | FFmpegSource2 Media Index |
| FFL file extension | Microsoft | Find Fast Indexer Document List Format |
| FFN file extension | Electronic Arts, Inc. | FIFA World Cup Game Data Fe Art |
| FFO file extension | Microsoft | Find Fast Indexer Document Properties Cache Format |
| FFPRESET file extension | N/A | FFmpeg Preset |
| FFS file extension | Safe Software | FME Desktop Feature Store Format |
| FFS_BATCH file extension | SourceForge.net | FreeFileSync Configuration |
| FFS_DB file extension | SourceForge.net | FreeFileSync Database |
| FFS_GUI file extension | SourceForge.net | FreeFileSync Configuration |
| FFS_REAL file extension | SourceForge.net | FreeFileSync Configuration |
| FFT file extension | IBM | Final Form Text Format |
| FFU file extension | Microsoft Corporation | Windows Phone Full Flash Update |
| FFWP file extension | Lucom | FormsForWeb Packet Format |
| FFX file extension | Adobe Systems | Adobe After Effects Preset Format |
| FG file extension | Singular Inversions | FaceGen Project Format |
| FG3 file extension | Efofex Software | FX Graph Interactive Graph Format |
| FGA file extension | WinAbility Software Corporation | Folder Guard Attributes |
| FGB file extension | N/A | Valve SDK Source |
| FGC file extension | Nova Development Corporation | Greeting Card Factory Greeting Card |
| FGD file extension | Valve | Forge Game Data Format |
| FGDB file extension | FontLab Ltd. | Fontographer Mac |
| FGF file extension | N/A | Nav.Net NG Fusker Generator |
| FGL file extension | Fifth Generation Systems | Fifth Generation Language (5GL) Source Code Format |
| FGP file extension | WinAbility Software Corporation | Folder Guard Passwords |
| FGR file extension | Fourth Ray Software | FRSGiftRegistry Database |
| FGT file extension | SourceForge.net | FreeGantt Skeleton |
| FGZ file extension | FGX | Formula Graphics Standalone Presentation Archive |
| FH file extension | Symantec | Symantec Backup Exec Format |
| FH10 file extension | Adobe Systems | Adobe FreeHand 10 Drawing Format |
| FH11 file extension | Adobe Systems | Adobe FreeHand 11 Drawing Format |
| FH12 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH2 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH3 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH4 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH40 file extension | Adobe Systems Incorporated | Adobe FreeHand For Mac |
| FH5 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH50 file extension | Adobe Systems Incorporated | Adobe Freehand Creator Code |
| FH6 file extension | Adobe Systems Incorporated | Adobe FreeHand Drawing |
| FH7 file extension | Adobe Systems | Adobe FreeHand 7 Drawing Format |
| FH8 file extension | Adobe Systems | Adobe FreeHand 8 Drawing Format |
| FH9 file extension | Adobe Systems | Adobe FreeHand 9 Drawing Format |
| FHA3 file extension | Adobe Systems Incorporated | Adobe Freehand For Mac |
| FHC file extension | Canute | Canute - FHC Data Format |
| FHD file extension | Adobe Systems | Adobe FreeHand Vector Drawing Format |
| FHD3 file extension | N/A | FreeHand |
| FHF file extension | Cleanersoft Software | Free Hide Folder Data Format |
| FHM file extension | ASIP Solutions, Inc. | ASIP Meister |
| FHS file extension | Adobe Systems Incorporated | Adobe Flash Skin XML |
| FHX file extension | Emerson Electric Co. | DeltaV Configuration |
| FHZ file extension | Adobe Systems Incorporated | Adobe Robohelp ZIP Compressed Skin |
| FI file extension | N/A | Flash Image Image |
| FIB file extension | Forensic Innovations, Inc. | File Investigator |
| FIC file extension | N/A | WINDEV Hyper File Database |
| FID file extension | Forensic Innovations | File Investigator Database Format |
| FIDO file extension | Adobe Systems Incorporated | Kodak Cineon Image Format |
| FIF file extension | Interwoven Systems | Fractal Image Format |
| FIFF file extension | N/A | Elekta Neuromag Data |
| FIG file extension | Xfig | Xfig Drawing |
| FIL file extension | dataBased Intelligence | File List |
| FILA file extension | Bungie Studios | Aleph One Replay Format |
| FILE file extension | N/A | Generic Windows Format |
| FILELOC file extension | Apple, Inc. | Apple Mac OS X Finder Internet Location |
| FILEPART file extension | N/A | WinSCP Temporary Download |
| FILE_CRCS file extension | Electronic Arts, Inc. | Electronic Arts Origin Client |
| FILM file extension | Filmkey | Filmkey Player Media |
| FILTERS file extension | Microsoft | Microsoft Visual Studio VCX Project Filter Format |
| FIM file extension | Mystic Fractal | Fractal Imaginator Data/Parameter |
| FIMPP file extension | N/A | FiM++ Source Code Format |
| FIN file extension | N/A | Sapir Torah Text |
| FIO file extension | Ulead Systems | Aldus PhotoStyler Graphics Filter |
| FIR file extension | Pyrotechnics Management, Inc. | FireOne Fireworks Show |
| FIRE file extension | CofeeCup | FireStarter Project Format |
| FIRST file extension | N/A | Formatted Text |
| FIS file extension | 3am Solutions (UK) Limited | Dynamite VSP Feature Interpretation Style |
| FIT file extension | Garmin | Garmin Activity Format |
| FITS file extension | N/A | Flexible Image Transport System Format |
| FIV file extension | Forensic Innovations, Inc. | File Investigator |
| FIZ file extension | N/A | FITS Graphics |
| FJL file extension | N/A | Rootkit.Win32.Agent.fjl Virus |
| FJSW file extension | Hermitech Laboratory | Formulator Tarsia Jigsaw |
| FJV file extension | NNG Kft | IGO Primo Map Related |
| FKC file extension | Softland | FBackup Catalog |
| FKD file extension | LANSRAD | FotoKiss Photo Set Data |
| FKT file extension | KDE e.V | KmPlot Data |
| FKY file extension | N/A | Visual FoxPro Macro Format |
| FL file extension | Microsoft | Freelancer Saved Game Format |
| FL3 file extension | Adobe Systems | Flash 3D Format |
| FLA file extension | Adobe Systems | Editable Adobe Flash Movie Format |
| FLAC file extension | N/A | Audio Files Encoded By Flac - Free Lossless Audio Codec |
| FLAM3 file extension | N/A | Fractal Flames Format |
| FLAME file extension | N/A | Fractal Flame Parameters |
| FLB file extension | FileMaker | FileMaker Pro Label Format |
| FLC file extension | Autodesk | AutoDesk FLIC Format |
| FLD file extension | YSFLIGHT.com | YSFLIGHT Field Format |
| FLEXOLIBRARY file extension | Apple, Inc. | Final Cut Pro Library |
| FLF file extension | Microsoft | Microsoft Dynamics NAV License Format |
| FLG file extension | The IsoPuzzle Team | IsoPuzzle Flag Format |
| FLH file extension | N/A | FLIC Animation Format |
| FLI file extension | Autodesk | Autodesk Animator FLIC Animation Old Format |
| FLIC file extension | N/A | Autodesk Animator Animation |
| FLIPCHART file extension | Promethean | ActivInspire Flipchart Format |
| FLI_ file extension | Autodesk, Inc. | Autodesk Animator FLIC Animation Old Format |
| FLK file extension | NewSoftwares.net | Folder Lock Encrypted Format |
| FLKA file extension | NewSoftwares | Folder Lock Encrypted Portable Folder Format |
| FLKB file extension | NewSoftwares | Folder Lock Encrypted Folder Format |
| FLKW file extension | NewSoftwares Inc. | Folder Lock Encrypted |
| FLL file extension | N/A | Visual FoxPro Dynamic Link Library |
| FLM file extension | Microsoft Corporation | Visual FoxPro Library |
| FLMOD file extension | Microsoft Corporation | Freelancer Game Archive |
| FLN file extension | DeLorme | Flight Plan |
| FLO file extension | iGrafx | IGrafx FlowCharter Format |
| FLOW file extension | Microsoft | Expression SketchFlow Data Format |
| FLP file extension | N/A | FL Studio Saved Track Format |
| FLS file extension | Adobe Systems | Adobe Flash Lite Sound Bundle Format |
| FLST file extension | Adobe Systems | Adobe InDesign Format |
| FLT file extension | N/A | Filter Format |
| FLT3 file extension | Adobe Systems Incorporated | Adobe Filter |
| FLUX file extension | FluxTime Limited | FluxTime Studio Clip |
| FLV file extension | Adobe Systems | Flash Video Format |
| FLVAT file extension | N/A | Downloaded Flash Video |
| FLW file extension | IBM | Freelance Flowchart |
| FLWA file extension | NewSoftwares | Folder Lock Wallet Format |
| FLX file extension | N/A | FLIC Animation |
| FLY file extension | Digiflyer | Digiflyer E-mail Document |
| FLZ file extension | CyberLink Corp. | MediaShow Data |
| FM file extension | Adobe Systems | FrameMaker Document Format |
| FM1 file extension | IBM | Lotus 1-2-3 Release 2.x Spreadsheet |
| FM2 file extension | FCEUX project team | FCEUX Movie |
| FM3 file extension | IBM | Lotus 1-2-3 Release 3.x Spreadsheet Format |
| FM5 file extension | FileMaker | FileMaker 5 Database Format |
| FMAP file extension | RootsMagic, Inc. | Family Atlas Pulbished Family Map |
| FMB file extension | Oracle Corporation | Oracle Binary Source Code |
| FMC file extension | Cobus | NCAD |
| FMCF file extension | Adobe Systems Incorporated | Adobe Type Manager Preferences |
| FMD file extension | Microsoft Corporation | Microsoft Access |
| FMDB file extension | ENSOFT INDIA | BUILD-QUANT Object Database |
| FME file extension | Safe Software | FME Mapping Format |
| FMELIC file extension | Safe Software | FME License Format |
| FMF file extension | Data Techniques, Inc. | FaxMan Jr Fax |
| FMI file extension | Safe Software | FME Workbench Mapping Format |
| FMJ file extension | Luxand Development | FaceMorpher Project |
| FMK file extension | GFI Software | FaxMaker |
| FMK$ file extension | FileMaker, Inc. | FileMaker For Mac |
| FMK4 file extension | FileMaker, Inc. | FileMaker For Mac |
| FML file extension | THQ | WWE RAW Character Format |
| FMO file extension | dataBased Intelligence, Inc. | DBASE IV Compiled Format |
| FMOD file extension | Adobe Systems | Adobe Illustrator Flattening Module Format |
| FMP file extension | FileMaker | Filemaker Pro Database |
| FMP12 file extension | FileMaker | FileMaker Pro Database Format |
| FMP3 file extension | FileMaker, Inc. | FileMaker Pro For Mac Document |
| FMPLUGIN file extension | FileMaker | FileMaker Pro Plug-in Format |
| FMPP file extension | Ternion Corporation | FLAMES Model Prototype |
| FMPR file extension | FileMaker, Inc. | FileMaker Pro Mac |
| FMPSL file extension | FileMaker | FileMaker Pro Database Snapshot Format |
| FMR file extension | Rainer Goebel | BrainVoyager QX Project |
| FMS file extension | IBM | Lotus Freelance Graphics |
| FMT file extension | N/A | FoxPro Format |
| FMTR file extension | FileMaker, Inc. | FileMaker Transfer |
| FMV file extension | Safe Software | FME Viewspace Format |
| FMW file extension | Safe Software | FME Workspace Format |
| FMX file extension | N/A | FileMaker Plug-in Format |
| FMXLIST file extension | Safe Software Inc. | FME Transformer List Format |
| FMXT file extension | FileMaker, Inc. | FileMaker Pro Mac |
| FMZ file extension | AutoDesSys | Form-Z Project Format |
| FN3 file extension | Harvard Graphics | Harvard Graphics 3.0 Font |
| FNA file extension | University of Virginia | FASTA DNA And Protein Sequence Alignment |
| FNBK file extension | Nova Development | Food Network Recipe Manager Recipe Data Format |
| FNC file extension | Denford | QuickCAM 3D CNC Format |
| FND file extension | Microsoft | Microsoft Windows Explorer Saved Search Format |
| FNDR file extension | DeLorme | Xmap For Mac |
| FNET file extension | FileMaker, Inc. | FileMaker Network |
| FNF file extension | Lugert Verlag GmbH & Co. | Forte Notation |
| FNI file extension | IBM | FileNet IDM Viewer |
| FNK file extension | N/A | FunkTracker Module |
| FNL file extension | Microsoft Corporation | Microsoft Live Mesh |
| FNLF file extension | Focusrite | Scarlett Plug-in Suite License Format |
| FNM file extension | Apache Software Foundation | Apache Lucene Field |
| FNN file extension | Microsoft Corporation | DOS Screen Text Font |
| FNO file extension | Atlast! Solutions | Atlast File Notes Organizer CSV Data |
| FNR file extension | N/A | Trojan-Dropper.Win32.Flystud.lc. |
| FNRECIPES file extension | Nova Development | Food Network Recipe Format |
| FNS file extension | Apple, Inc. | Apple FontSyncScripting Font Profile |
| FNSP file extension | Apple, Inc. | Apple FontSync Scripting |
| FNT file extension | N/A | Font Format |
| FNTA file extension | Bungie Studios | Marathon 2 Aleph One Font Format |
| FNX file extension | Lavarow Team | Fenix Key |
| FO file extension | N/A | XSL-FO Form Format |
| FO1 file extension | Embarcadero Technologies, Inc. | Borland Turbo C Font |
| FO2 file extension | Embarcadero Technologies, Inc. | Borland Turbo C Font |
| FOB file extension | Microsoft | Microsoft Dynamics NAV (Navision) Attain Object Format |
| FOC file extension | Information Builders | FOCUS Database |
| FOD file extension | EZ-Forms Company | EZ-Forms ULTRA |
| FODG file extension | OpenOffice.org Project Team | OpenDocument Flat XML Drawing |
| FODP file extension | Oracle | OpenDocument Flat XML Presentation Format |
| FODS file extension | Oracle | OpenDocument Flat XML Spreadsheet Format |
| FODT file extension | Oracle | OpenDocument Flat XML Document Format |
| FOF file extension | EZ-Forms Company | EZ-Forms Filled Out Form |
| FOG4 file extension | FontLab Ltd. | Fontographer 4 |
| FOL file extension | SoftKey | PFS First Choice Database Format |
| FOLDER file extension | Microsoft Corporation | Microsoft Windows Explorer Folder |
| FOLX file extension | Eltima Software | Folx Download Format |
| FOM file extension | EZ-Forms Company | EZ-Forms Fill Out Master Form |
| FOMOD file extension | N/A | Fallout 3 Mod Format |
| FON file extension | N/A | Microsoft Windows Bitmap Font Format |
| FONT file extension | N/A | Font Data |
| FOP file extension | humanIT | InfoZoom Protected Data Format |
| FOR file extension | N/A | Fortran Source Format |
| FORGE file extension | Ubisoft | Assassins Creed Game Audio Or Data Format |
| FORM file extension | Oracle Corporation | Java Form |
| FORTH file extension | N/A | Forth Source Code |
| FOS file extension | Bethesda Softworks | Fallout 3 Saved Game Format |
| FOT file extension | N/A | Font Resource Format |
| FOTA file extension | Firmware Over-the-Air Format | |
| FOUNDFILES file extension | Apple, Inc. | Mac OS X |
| FOUNTAIN file extension | N/A | Fountain Syntax |
| FOV file extension | N/A | MORSE Field Of View |
| FOX file extension | humanIT | InfoZoom Data Format |
| FP file extension | N/A | FileMaker Pro Database Format |
| FP2 file extension | GameHouse, Inc. | Insaniquarium Deluxe Fish |
| FP3 file extension | FileMaker | FileMaker Pro Database Format |
| FP4 file extension | FileMaker | FileMaker Pro Database Format |
| FP5 file extension | FileMaker | FileMaker Pro Database Format |
| FP7 file extension | FileMaker | FileMaker Pro Database Format |
| FPA file extension | N/A | Front Panel Designer Encrypted Order Format |
| FPAGE file extension | Microsoft Corporation | Microsoft XPS Document Page |
| FPB file extension | Ternion Corporation | FLAMES Playback Recorder |
| FPBF file extension | Apple | Mac OS X Finder Burnable Backup Archive |
| FPC file extension | Microsoft Corporation | FoxPro Catalog |
| FPD file extension | N/A | Front Panel Designer Order Format |
| FPE file extension | The Game Creators | FPS Creator Entity Format |
| FPENC file extension | FileProtect | FileProtect Encrypted Format |
| FPF file extension | IKEA | IKEA Home Planner Format |
| FPFV file extension | Intermedia | File Protected From Virus |
| FPG file extension | The Game Creators | FPS Creator Game Project Format |
| FPI file extension | The Game Creators | FPS Creator Intelligence Script Format |
| FPID file extension | The Game Creators | FPS Creator AI Wizard Data Format |
| FPIX file extension | N/A | FlashPix Bitmap Image |
| FPJ file extension | Crytek | CryENGINE Facial Editor Project Format |
| FPK file extension | N/A | JetForm Form Package File (FormFlow) |
| FPKG file extension | Apple, Inc. | Apple Mac OS X Installer Package |
| FPL file extension | N/A | Flitskikker Language |
| FPM file extension | The Game Creators | FPS Creator Map Format |
| FPMB file extension | The Game Creators | FPS Creator Map Buffer Format |
| FPMO file extension | The Game Creators | FPS Creator Map Overlay Format |
| FPOP file extension | Activision | Spider-Man: Shattered Dimensions Saved Game |
| FPOS file extension | Power Of Software | Photo Pos Pro Image Format |
| FPP file extension | N/A | Front Panel Designer Project Format |
| FPR file extension | N/A | Fruitypro Samples Humanize Presets Grooves |
| FPS file extension | The Game Creators | FPS Creator Project Format |
| FPSL file extension | FileMaker | FileMaker Pro Snapshot Link |
| FPSX file extension | Nokia | Symbian Firmware Flash Format |
| FPT file extension | FileMaker | FileMaker Pro Database Memo Format |
| FPW file extension | Microsoft Corporation | FoxPro Configuration |
| FPX file extension | Kodak | Kodak FlashPiX Bitmap Image |
| FQC file extension | CaosG | FAQ Creator Format |
| FQF file extension | iniCom Networks Inc. | FlashFXP Queue |
| FQY file extension | Ternion Corporation | FLAMES (FLARE) Command |
| FR file extension | N/A | French Language Translation |
| FR3 file extension | Fast Reports | FastReport Form Format |
| FR4 file extension | Sirotinsky Arthur and Olga Fedorenko | Fractal Explorer Quaternion Spots In Internal Parametrical Format |
| FRA file extension | Electronic Arts, Inc. | Fifa World Cup Game Data |
| FRAG file extension | Microsoft Corporation | Microsoft XPS Document Fragment |
| FRAM file extension | Adobe Systems Incorporated | Adobe FrameMaker |
| FRAME file extension | Adobe Systems Incorporated | Adobe FrameMaker Interchange Format |
| FRAMES file extension | The Iconfactory | The Iconfactory XScope Frame Format |
| FRAMEWORK file extension | N/A | Apple Mac OS X Application Framework Format |
| FRC file extension | Matthias Neusinger | Microsoft Flight Simulator FS Recorder Recorded Format |
| FRD file extension | Electronic Arts, Inc. | Need For Speed Track Data |
| FRE file extension | Electronic Arts, Inc. | FIFA 2002 Data Legal Screen |
| FRED file extension | N/A | FredEditor Sound |
| FREECELLSAVE-MS file extension | Microsoft | FreeCells Saved Game Format |
| FREELIST file extension | Esri | ArcGIS |
| FRELF file extension | ABBYY | Abbyy FineReader Engine License |
| FREQ file extension | Richard Hughey - Kevin Karplus - Anders Krogh | SAM Frequency Model |
| FRESHCONTACT file extension | NAVIGON AG | NAVIGON MobileNavigator Navigation |
| FRF file extension | Fast Reports | FreeReports Template Format |
| FRG file extension | Sony | Sound Forge Project Format |
| FRI file extension | Mozilla Corporation | Firefox Bookmark Backup |
| FRJ file extension | FreeForm-J | FreeForm-J Project Format |
| FRK file extension | N/A | Apple Macintosh Resource Or Data Fork |
| FRL file extension | N/A | Formflow Electronic Form Loader |
| FRM file extension | MySQL | MySQL Database Metadata Format |
| FRM16 file extension | Interplay Entertainment Corporation | Lionheart: Legacy Of The Crusader Game |
| FRO file extension | N/A | DBASE IV Compiled Report Format |
| FRP file extension | Delrina | PerForm Or FormFlow Form |
| FRQ file extension | Olle Persson | Bibexcel |
| FRR file extension | J R Oakley | Mandelbrot Explorer Fractal Region Settings Format |
| FRS file extension | RL Vision | Flash Renamer Script Format |
| FRT file extension | N/A | Visual FoxPro Additional Report Description Format |
| FRV file extension | Microsoft Corporation | Microsoft FRx |
| FRW file extension | Atari, Inc. | RollerCoaster Tycoon Fireworks Source |
| FRX file extension | N/A | Visual FoxPro Main Report Description Format |
| FRY file extension | RandomControl | Fryrender Export Format |
| FRZ file extension | The Snes9x Team | Snes9x Saved State Format |
| FS file extension | Microsoft | Microsoft Visual F# Source Code Format |
| FS2 file extension | Interplay | Descent FreeSpace 2 Game Format |
| FS5 file extension | Microsoft Studios | Microsoft Flight Simulator Scenery |
| FS6 file extension | Microsoft Studios | Microsoft Flight Simulator Panels |
| FSA file extension | N/A | FASTA DNA And Protein Sequence Alignment |
| FSB file extension | Firelight Technologies | FMOD Audio Format |
| FSC file extension | Practical Software Design | Practical Scriptwriter Format |
| FSD file extension | N/A | COCO AmsterCHEM Flowsheet Document |
| FSEVENTSD file extension | Apple, Inc. | MAC OS X |
| FSEVENTSD-UUID file extension | N/A | Fseventsd |
| FSF file extension | Microsoft Corporation | Microsoft Office Cache |
| FSG file extension | The FreeCol Team | FreeCol Saved Game Format |
| FSH file extension | OpenGL | Fragment Shader Format |
| FSI file extension | Microsoft | Microsoft Visual F# Signature Format |
| FSIF file extension | Avanquest | MyLabel Designer Deluxe Label Format |
| FSK file extension | David THOIRON | FotoSketcher Parameter Preset |
| FSL file extension | AutoDesSys | Form•Z Script |
| FSM file extension | N/A | Farandole Composer WaveSample Music Format |
| FSN file extension | Nova Development Corporation | Greeting Card Factory Greeting Card |
| FSO file extension | Adobe Systems Incorporated | Adobe Flash Media Server File System Object |
| FSP file extension | N/A | Fsplit Split |
| FSPROJ file extension | Microsoft | Microsoft Visual Studio Visual F# Project Format |
| FSQ file extension | Crytek | CryENGINE Facial Editor Sequence Format |
| FSR file extension | N/A | File Substring Replacement Utility |
| FSS file extension | Basta Computing | Splitty Data Split Format |
| FSSAVE file extension | Microsoft | Flight Simulator Save Format |
| FSSCRIPT file extension | Microsoft | Microsoft Visual Studio F# Script Format |
| FST file extension | Viva Media | Crazy Machines 2 Object Format |
| FSTAB file extension | N/A | File System Table |
| FSX file extension | Microsoft | Microsoft Visual Studio F# Script Format |
| FSY file extension | N/A | PhotoFantasy Image Picture |
| FSZ file extension | Mystic Fractal | Fractal Zplot Data/parameter |
| FT file extension | Planit Software | Lotus Notes Full Test Index |
| FT10 file extension | Adobe Systems | Adobe FreeHand 10 Template Format |
| FT11 file extension | Adobe Systems | Adobe FreeHand 11 Template Format |
| FT30 file extension | Adobe Systems Incorporated | Adobe PageMaker For Mac Filter |
| FT7 file extension | Adobe Systems | Adobe Freehand 7 Template Format |
| FT8 file extension | Adobe Systems | Adobe FreeHand 8 Template Format |
| FT9 file extension | Adobe Systems | Adobe FreeHand 9 Template Format |
| FTB file extension | Ancestry.com Inc. | Family Tree Maker Genealogy |
| FTC file extension | FluxTime | FluxTime Clip Format |
| FTCH file extension | Extensis a division of Celartem, Inc. | Extensis Portfolio Image Database |
| FTD file extension | RHDC Services Ltd | FFT Designer Project |
| FTF file extension | N/A | Sony Ericsson Xperia Android Firmware |
| FTG file extension | N/A | Microsoft Windows Help Format |
| FTH file extension | FileMaker | FileMaker Pro Theme Format |
| FTIL file extension | FTIL | E-Hastakshar Contract Note Format |
| FTK file extension | N/A | Forensic Toolkit |
| FTL file extension | The FreeMarker Project | FreeMarker Template Format |
| FTM file extension | N/A | FamiTracker Song Format |
| FTMB file extension | Ancestry.com Inc. | Family Tree Maker Backup |
| FTMT file extension | Ancestry.com Inc. | Family Tree Maker Chart Template |
| FTMX file extension | MakeMusic, Inc. | Finale Score Template |
| FTN file extension | N/A | Fortran Language Source Code Format |
| FTP file extension | N/A | FTP Configuration |
| FTPL file extension | Simfatic Solutions | Simfatic Forms Template |
| FTPLOC file extension | N/A | Apple Mac OS X Finder FTP Location Format |
| FTPQUOTA file extension | ProFTPD | Ftpquota Format |
| FTR file extension | Silicon Graphics, Inc. | IRIX |
| FTS file extension | N/A | Windows Help Index Format |
| FTV file extension | CA Technologies | CA CleverPath Forest & Trees |
| FTW file extension | Ancestry.com | Family Tree Maker Format |
| FUD file extension | N/A | FairUse Wizard Data |
| FUJ file extension | N/A | Worm.Win32.AutoRun.fuj Virus |
| FUK file extension | Running With Scissors | Postal 2 Map |
| FUL file extension | Microsoft | Microsoft Backup File List |
| FULL file extension | Red Hat, Inc. | Cygwin Variable Log |
| FUN file extension | Lucky Monkey Design LCC | Koolmoves |
| FUS file extension | FXpansion™ Audio UK Ltd. | GURU Uninstall Script |
| FUSE_HIDDEN file extension | The Samba Team | Samba |
| FV file extension | Freshdevices.com | Fresh View Thumbnail Cache |
| FVE file extension | Microsoft Corporation | Windows BitLocker Full Volume Encryption |
| FVP file extension | ANSYS Inc. | FLUENT Path Line |
| FVU file extension | National Securities Depository Limited | File Validation Utility Input |
| FW file extension | N/A | Kodak Camera Firmware Format |
| FW2 file extension | Selections & Functions, Inc. | FrameWork Database |
| FW3 file extension | Selections & Functions, Inc. | FrameWork III Database |
| FW4 file extension | Selections & Functions, Inc. | Framework IV |
| FWB file extension | N/A | FileWrangler Data Backup |
| FWD file extension | Ipswiitch,Inc. | Imail Server Forwarded Mail |
| FWDN file extension | MSS Software & Services | FWriter Document |
| FWEB file extension | IBM | Fortran WEB |
| FWF file extension | Bentley Systems, Incorporated | Bentley InRoads Survey Feature Table |
| FWL file extension | CursorArts Company | FileWrangler EXE Library |
| FWP file extension | Microsoft | Frontpage Web Packages |
| FWS file extension | CursorArts Company | FileWrangler Data File For File Splitting Configuration |
| FWT file extension | Facet Corp | FacetWin Configuration Format |
| FWX file extension | Aegis Group | FoxWeb Script |
| FX file extension | Microsoft | DirectX D3DXEffect Object Format |
| FX2 file extension | Corel Corporation | Corel WordPerfect Office Template |
| FX3 file extension | Northport Systems Inc. | Fugawi Map |
| FX4 file extension | Northport Systems Inc. | Fugawi GPS Map |
| FXA file extension | O3 Entertainment | OC3 FaceFX Actor Format |
| FXB file extension | Steinberg | Steinberg VST Audio Plug-in Format |
| FXC file extension | N/A | DIMDATA FilePackager Configuration Format |
| FXCB file extension | CRYTEK | Crysis Shader Cache |
| FXCPROJ file extension | NVIDIA | NVidia FX Composer Project Format |
| FXD file extension | Microsoft Corporation | FoxPro FoxDoc Support |
| FXF file extension | IBM | IBM BigFix Action Format |
| FXG file extension | Adobe Systems | Adobe Flash XML Graphics Format |
| FXH file extension | MetaQuotes Software Corp. | MetaTrader 4 Backup |
| FXI file extension | Cottonwood Software | File-Ex Data |
| FXL file extension | OC3 Entertainment | FaceFX Batch Format |
| FXM file extension | Symantec | WinFax Document |
| FXML file extension | Oracle Corporation | Oracle FXML Language Source Code |
| FXO file extension | N/A | WinFax Image Format |
| FXP file extension | Adobe Systems | Adobe Flash Catalyst FXP Project Format |
| FXPL file extension | Adobe | Adobe Flash Catalyst FXP Library Format |
| FXR file extension | N/A | Oracle Font Cross-reference |
| FXS file extension | pmG | MessiahStudio Scene Format |
| FXT file extension | N/A | Finale Plug-in Format |
| FXTC file extension | Adobe Systems Incorporated | Adobe After Effects Project |
| FXW file extension | eSignal | ESignal |
| FXY file extension | N/A | Fortron Embroidery Format |
| FYC file extension | eSignal | ESignal |
| FYI file extension | Flow-Cal, Inc. | FLOWCAL Desktop |
| FZ file extension | Fritzing | Fritzing Project Format |
| FZA file extension | AutoDesSys | Form-Z Autosave Format |
| FZB file extension | N/A | Casio FZ-1 Bank Dump |
| FZD file extension | Efzed Pty. Ltd. | AIRLINE City Data |
| FZF file extension | N/A | Casio FZ-1 Full Dump |
| FZIP file extension | Foxit | Foxit Reader Add-on Format |
| FZP file extension | Fritzing | Fritzing Part Format |
| FZV file extension | N/A | Casio FZ-1 Voice Dump Format |
| FZY file extension | LexisNexis | LexisNexis Concordance Fuzzy |
| FZZ file extension | Fritzing | Fritzing Data Format |
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