.??_  Files ending in "_" are often compressed install files of the same
          name (e.g., .EX_ expands to .EXE, .DL_ expands to .DLL, etc.)
  .F    Compressed Archive File (UNIX)
        FORTRAN Program
        Newing-Hall Computer Engraving Software Graphic
  .F00  Kanji Font
  .F01  Perfect Fax Document
  .F06  DOS 6 Pixel Screen Font
  .F07  DOS 7 Pixel Screen Font
  .F08  DOS 8 Pixel Screen Font
  .F09  DOS 9 pixel Screen Font
  .F10  DOS 10 Pixel Screen Font
  .F11  DOS 11 Pixel Screen Font
  .F12  DOS 12 Pixel Screen Font
  .F13  DOS 13 Pixel Screen Font
  .F14  DOS 14 Pixel Screen Font
  .F15  DOS 15 Pixel Screen Font
  .F16  DOS 16 Pixel Screen Font
  .F2   FLASH BIOS File
  .F2R  Farandoyle Linear Module Format
  .F3   FLASH BIOS File
  .F3R  Farandoyle Blocked Module Format
  .F32  Raw 32-bit IEEE Floating Point Values
  .F64  Raw 64-bit IEEE Floating Point Values
  .F77  FORTRAN 77 Program
  .F90  FORTRAN Program
  .F96  Frecom FAX96 Document
  .FA   EROSION 3D Flow Accumulation [Format (pdf)]
  .FA1  DATAIR FAS 87/132 Reporter Data File
  .FA2  DATAIR FAS 87/132 Reporter Custom text File
  .FAC  Usenix FaceServer Graphic  [XnView]
  .FACE  Usenix FaceServer Graphic  [XnView]
  .FAM  Maxis File (unverified)
        The Sims Family File
  .FAQ  Frequently Asked Questions
  .FAQT  FAQTool XML Contents File
  .FAR  Farandoyle Tracker Music Module
        The Sims (Maxis) Archive File  [Dragon UnPACKer]
  .FAS  3D Fassade Plus Basic Module
  .FAV  MS Outlook Bar Shortcuts [Buy Office XP at Shop.Microsoft]
  .FAX  Fax File (various - often TIFF format)  [XnView]
  .FBC  FamilyTree Compressed Backup File
  .FBD  F-22 Lightning Advanced Gravis Joystick Control File
        Remedy Change Management Flashboard
        DART Pro 98 User-definied Complex Restoration Filters
        The Quarterback Pro Coverage Worksheet
        Honeywell Control Builder File (UMC800 Controllers)
  .FBK  Navison Financials Backup
        FamilyTree Backup File
  .FBM  Fuzzy Bitmap  [XnView]
  .FBS  File Burner Skin
  .FBX  3D Data Exchange Format
  .FC   Harvard Dictionary (Harvard Graphics taken over by Serif)
  .FC2  Curious Labs Poser Face File
  .FCB  Forest Cover Attribute Processing File
        FAAST Builder File
  .FCD  Virtual CD-ROM
        FastCAD/EasyCAD Output
        Patton & Patton Flow Charting 3 File
        IsoBuster File
  .FCF  SHELXL93 File (created by LIST 4 command) [contains: h,k,l,Fc^2,Fo^2,sigma(Fo^2)]
        Altera MAX+PLUS II File
  .FCG  Mystic Photo Format
  .FCI  EROSION 3D Inflow Table [Format (pdf)]
  .FCM  Forward Compression Binary File Patch
        Fluke Networks CableManager File
  .FCS  Flow Cytometry Standard Format
        Fantasy Football League Organizer File
        RealProducer Pro Settings
        c-tree Server/Plus Data File
        Canon Zoom Browser EX File
        CD Trustee File
        Spectrum Server Log File
  .FCT  Foxpro Catalog
        Campaign Cartographer 2 File
  .FCW  Campaign Cartographer 2 File
        FastCAD File [Viewer]
  .FD   FORTRAN Declarations  [FORTRAN]
        Dataflex Field Compiler Offsets
  .FDB  Navison Financials Database
        Legacy Family Tree Database
        Art Explosion Portfolio Catalog File
  .FDF  Adobe Acrobat Forms Document
        Format Definition File (used by PC connectivity packages uploading to midrange systems)
  .FDI  Amiga Disk File (using WinUAE 0.8.17 emulation software) (see ADF) [Amiga Forever]
  .FDL  XYRO Active Distribution Console File Distribution List
  .FDM  Floppy Disk Manager File [Software?]
  .FDR  Final Draft Document File
        Embroidery Design File [possibly read with Melco Sizer Software]
  .FDW  F3 Design and Mapping Document Form
  .FDX  Force Index
  .FEB  WordPerfect Figure Editor Button Bar
  .FEC  U.S. Federal Campaign Expense Submission File [Also FILPAC]
        Ferite Programming Language File (http://www.ferite.org is listed but non working)
  .FEM  CADRE Finite Element Mesh File
  .FEP  MS WEFT Embedding Project
  .FEX  Focus File
  .FF   AGFA CompuGraphics Outline Font Description
        Sigmac Source File
  .FFA  MS Fast Find File
  .FFF  GUS PnP Bank
        defFax Fax Document
        Maggi Hairstyles & Cosmetics  [XnView]
  .FFL  MS Fast Find File
        PrintMaster Gold Image File
        Alien vs Predator Archive  [Dragon UnPACKer]
  .FFO  MS Fast Find File
  .FFT  DCA/FFT Final Form Text
        MS Fast Find File
  .FFX  MS Fast Find File
  .FGA  Folder Guard Attributes
  .FGD  Folder Guard Data
        Half-life Modification Map Configuration File (also see .BSP)
        Digital Raster Graphic Metadata File
  .FGP  Folder Guard Passwords File
  .FH3  Aldus Freehand 3 Drawing
  .FH4  Aldus Freehand 4 Drawing
  .FH5  Freehand 5
  .FH6  Freehand 6
  .FH7  Freehand 7
  .FH8  Macromedia Freehand 8
  .FH9  Macromedia Freehand 9
  .FH10  Macromedia Freehand 10  [Tech note]
  .FI   FORTRAN Interface File  [FORTRAN]
        Flash Image  [XnView]
  .FIC  Windev Database System
  .FIF  Fractal Image Format
        FIF (Iterated System)  [XnView]
        SpinRite Hard Disk Fingerprint File
  .FIG  REND386/AVRIL Graphic
        Super Nintendo Game-console ROM Image  [See ZNES or SNES9x]
  .FIL  dBase Files List Object
        WordPerfect Overlay
        Application Generator File Template
        ACL For Windows Data File (data mining software)
        File List (various)
  .FIM  Construsyc/Instasyc File
  .FIN  WordPerfect Print Format Text
        Perfect Writer Print Formatted Text
        ATI Radeon Video Driver File
  .FIO  ULead Viewer Support File
  .FIP  FingerPost Information Processor File (REMOTE.FIP is parameter file)
  .FIRE  FireStarter Project File
  .FISH  3d Fish Tank Saved Fish
  .FISHES  3d Fish Tank Saved Fishes
  .FISHTANK  3d Fish Tank Saved Fishtank
  .FIT  FITS Graphic (Flexible Image Transport System)  [XnView]
        MS Windows NT File Index Table
  .FITS  FITS Graphic (Flexible Image Transport System)  [XnView]
  .FIX  Generic Patch File
  .FKY  Foxpro Macro
  .FLA  Macromedia Flash Movie Authoring File
  .FLASK  FlasKMPEG Language Definition File (ASCII text file)
  .FLB  Papyrus Format Library
        VersaPro Folder Backup
  .FLC  AutoDesk FLIC Animated Picture [XnView]
        FLIC Video (may be same as above)
  .FLD  Charisma Folder
        Hijaak Thumbnail Folder
        WinFlash Educator Flashcard Options/Statistics File
        VersaPro Folder Contents
        3D Fassade Plus Field Define Module File
  .FLEX  Flexi Data Smoothing (Contact for program)
  .FLF  Corel Paradox Form
        OS/2 Driver File
        Navison Financials License File
        Firehand Lightning Graphic Collection
  .FLH  FLIC Animation (DTA)
  .FLI  Autodesk FLIC Animation [XnView]
        EmTeX Font Library
  .FLL  Foxpro Library
        The Sims Floor File
  .FLM  AutoCAD Film
        Medi@Show File
        "RealPixel" Animation File (various)
  .FLO  MicroGrafx FlowCharter File
  .FLP  Fruityloops Saved File
  .FLR  Live3D File
        The Sims (Maxis) Floor Texture File
  .FLS  Farrukh Imposition Purlisher Filelist Document
        WinFlash Educator Flashcard Source File
  .FLT  Corel Graphic Filter
        StarTrekker Music Module
        MulitGen Open Flight File
        WinFlash Educator Flashcard Compiled Test File
        OS/2 Warp Filter Device Driver
        Asymetrix Graphics Filter Support File
        Micrografx Picture Publisher Filter
        FLIC Animation (DTA)
        MS Graphics Filter
        FileMaker Filter
        CoolEdit Pro Filter [PAF filter]
  .FLX  FLIC Animation (Tempra Pro, Mathematica, U-Lead, 3DStudio MAX)
        Dataflex Ordered Binder
        DataFlex Compiled Binary File
  .FLZ  Medi@Show Data File
        WinFlash Educator Flashcard Compiled Study File
  .FM   Adobe FrameMaker Document
        FileMaker Pro Spreadsheet
  .FM1  Lotus Spreadsheet File
  .FM3  Harvard Device Driver (Harvard Graphics taken over by Serif)
        1-2-3 Format File
        FileMaker 3 Database Document
  .FMB  WordPerfect File Manager Button Bar
        Oracle Binary Form Source Code
  .FMC  NCAD File (woodworking CAD program)
        Embroidery Design File [possibly read with Melco Sizer Software]
  .FMD  Open Access File
  .FMF  IBM LinkWay Font or Icon
  .FMG  FreeMarkets® Graphics Browser (ActiveX Viewer)
  .FMK  PowerStation FORTRAN Make File  [FORTRAN]
  .FML  GetRight File Mirror List
        Oracle Mirror List
  .FMO  dBase Ordered Format
  .FMP  FileMaker Pro Document
  .FMT  Format File
        Style Sheet
        Oracle Text Form Format
        dBASE IV Format File
        MS Schedule+ Print File
        MS Visual FoxPro Csreen Format File
  .FMV  Frame Vector Metafile
  .FMX  Oracle Executable Form
  .FMZ  Form*Z Project File
  .FN3  Harvard Graphics Font (Harvard Graphics taken over by Serif)
  .FND  MS Explorer Saved Search
  .FNG  Font Navigator Group File
  .FNK  FunkTracker Module
  .FNO  Folio Infobase [May be mistype of .NFO]
  .FNP  FlashNpack (convert Flash Movies) [product in beta as of Feb 2002]
  .FNT  Font File (Windows 3.1)
  .FNX  Exact Inactive Font
  .FO1  Borland Turbo C Font
  .FO2  Borland Turbo C Font
  .FOB  Navision Attain Object File
  .FOG  Fontographer Font
        Computer Generated Forces for Action Fog Defaults
  .FOL  1st Reader Saved Message Folder
  .FOLDER  Mail Folder
  .FON  Font File
        Telix Dialing Directory
        Procomm Plus Call Log
  .FOO  Kai's SuperGoo Fusion
        WindowBase Form
  .FOT  Installed TrueType Font
  .FOUR  VAX CRYSTALS Chemical Crystallogaphy File
  .FOW  Family Origins File (Genealogy)
  .FOX  FoxBase File
  .FP   FileMaker Pro File
        FoxPro Configuration Info
  .FP1  Flying Pigs for Windows Data
  .FP3  FileMaker Pro File
        Imsi FloorPlan 3D
  .FP5  FileMaker Database Design Report Template
  .FPA  Franklin Potter Associates Business Invoice Designer
  .FPC  FoxPro Catalog File
  .FPF  Canadian Flight Wizard (flight planning software)
  .FPG  DIV Game Studio Multi Map  [XnView]
  .FPK  JetForm FormFlow File (JetForm now Accelio)
  .FPS  Operation Flashpoint Game File
  .FPT  FileMaker Pro File
        FoxPro Memo Fields
  .FPW  FloorPlan Plus Floorplan Drawing
  .FPX  FlashPix Bitmap  [IrfanView]
  .FQF  FlashFXP Queue File
  .FR3  dBase IV Renamed dBaseIII+ Form
  .FRA  FrameViewer File
  .FRE  Creative Digital Blaster Digital VCR File
        Male Normal CT  [XnView]
  .FRF  FontMonger Font
  .FRG  dBase IV Uncompiled Report
  .FRL  FormFlow File
  .FRM  Form File
        FrameMaker Document
        FrameBuilder Document
        Oracle Executable Form
        Visual Basic Form
        dBASE IV Report File (and others)
        WordPerfect Merge Form
        DataCAD Symbol Report File
        Megalux Frame  [XnView]
        MYOB Form File
  .FRO  dBase IV Compiled Report
        FormFlow File
  .FRP  PerForm Pro Plus Form
        FaxRush Packages (listing of fax files - now .ZPK)
  .FRS  WordPerfect Graphics Driver
  .FRT  FoxPro Report File
  .FRX  Visual Basic Binary Form File
        FoxPro Report File
  .FRZ  FormFlow File
  .FS   NetBSD File (usually BOOT.FS)
        PDT Feature Structure File
        FormSaver File
        FlexiSIGN File
  .FSC  Campaign Cartographer 2 File
  .FSF  Convert It! Factor File
        fPrint Audit Tool File
  .FSH  EA Sports Game Graphic Editor File
  .FSI  FileSplit
  .FSL  Borland's Paradox 7 Forms
        Corel Paradox Saved Form
  .FSM  Farandoyle Sample Format
  .FSR  File Substring Replacement Utility
  .FSS  Iomega Backup File Selection Set
  .FST  FastStats Analyzer File
        dbFast Linkable Program
  .FSX  Lotus 1-2-3 Data
        FormSaver Fields
  .FSY  PhotoFantasy Image  [XnView]
  .FT   Lotus Notes Full Text Index
  .FTB  Roots3 Index File
  .FTG  Windows Help Full-text Search Group File
  .FTM  Family File
        MicroGrafx Font
  .FTP  FTP Configuration Information
  .FTS  Windows Help Full-Text Search Index File
        Flexible Image Transport System  [XnView]
  .FTV  Forest & Trees File
  .FTW  Family File
        FontTwister File (text effect generator)
  .FU   F* You Software Key Generator (Software protection breaker)
  .FUL  Full Foram Count File
  .FUN  Koolmoves File (Flash tool)
  .FUZZY  Fuzzy Logic File
  .FVF  Fluke View
  .FVML  formVista (web application development environment) - Product in alpha Jul 2002
  .FVS  Forest Vegetation Simulator Tree Data File
  .FVT  Interlock Public Computer Utility
  .FW   Framework Database
  .FW2  Framework II File
  .FW3  Framework III File
  .FW4  Framework IV File
  .FWB  FileWrangler Data File Backup
  .FWL  FileWrangler EXE Library
  .FWS  FileWrangler Data File for File Splitting Configuration
  .FX   FastLynx On-Line Guide
  .FXD  WinFax Sent Document (TIFF format)
        FAXit Phonebook
  .FXI  File-Ex File
  .FXM  WinFax & WinFax MiniViewer Fax
  .FXO  Fax Image Document  [Open with Quick view Plus]
  .FXP  FoxPro Compiled Source
  .FXR  WinFax Received Document (TIFF format)
  .FXS  WinFax Fax Transmit Graphic
  .FXT  Finale Music Notation Software Plug-in
  .FZB  Casio FZ-1 Bank Dump
  .FZF  Casio FZ-1 Full Dump
        FontZip Font Packer
  .FZV  Casio FZ-1 Voice Dump