| fo1 | Borland Combined C/Assembly Source Code |
| Borland Turbo C Font Data |
| Borland Turbo C Main Database |
| fo2 | Borland Combined C/Assembly Source Code |
| Borland Turbo C Font Data |
| Borland Turbo C Main Database |
| fon | Hitachi Ladder Editor Force File |
| footer | WebSTAR Directory Indexer Footer |
| for | Fortran Source Code |
| form | Gambas V2 Form |
| forth | Forth Source Code |
| fox | FoxBase Compiled Executable |
| Visual FoxPro Executable |
| fp | OpenGL Fragment Program |
| Visual FoxPro Configuration Data |
| fp2 | Crestron SIMPL Symbol Mapping Data |
| fp3 | FastReport v3 Prepared Report |
| fpa | Front Panel Express Order Data |
| fpc | FreePascal Compiler Makefile |
| fpd | Front Panel Express Design |
| fpgt | Flowgorithm Program Template |
| fpm | Visual FoxPro Startup Data |
| fpp | Fortran Source Code |
| Front Panel Designer Project |
| fpq | Microsoft Visual FoxPro Updatable Query File |
| fprg | Flowgorithm Program |
| fps | FPS Creator Segment |
| fpt | FileMaker Pro Database Memo |
| Visual FoxPro Memo |
| fpx | FastReport .NET Prepared Report |
| Visual FoxPro Compiled Program |
| fr3 | FastReport v3 Form |
| framework | Xcode Applicatiuon Framework Data |
| frf | FreeReport Form |
| frg | DBase IV Uncompiled Report |
| frm | Uniface Form Data |
| Visual Basic Form |
| frpg | Flowgorithm Internal XML Data |
| frt | Forth Source Code |
| Visual FoxPro Report Memo |
| frx | Visual FoxPro Report |
| fs | F# Implementation |
| Forth Source Code |
| Gforth Forth Stream Source Code |
| fsb | Form Z Compiled Script |
| fscr | ChromeEd Forester Data Script |
| fsh | OpenGL Fragment Shader |
| fsi | F# Signature File |
| fsl | Form Z Script |
| fsq | CryENGINE Facial Editor Sequence |
| fsscript | F# Script |
| fst | CA-dBFast Linkable Program |
| fsx | F# Script |
| ftd | Falcon Template Document |
| fth | Forth Source Code |
| ftl | FreeMarker Template |
| ftlh | FreeMarker HTML Template |
| ftlx | FreeMarker XML Template |
| ftn | Fortran Source Code |
| ftr | Falcon Translation |
| ftt | Falcon Translation Template |
| ftx | WinDev HyperFileSQL Full-text Index |
| full | Cygwin Variable Log |
| func | FN Project Function Metadata |
| fw4 | Framework IV File |
| fweb | FWEB Initialization Data |
| fwx | FoxWeb Script |
| fx | Microsoft DirectX D3D Effect |
| fxa | FaceFX Actor File |
| fxd | FoxPro FoxDoc Support Data |
| fxh | MetaTrader 4 Backup Data |
| XNA Game Studio HLSL Header File |
| fxl | CryENGINE Facial Expression Library |
| FaceFX Language File |
| fxml | JavaFX Interface Description |
| fxo | Microsoft DirectX Pre-compiled Shader |
| fxp | Visual FoxPro Compiled Program |
| fxpl | Adobe Flash FXP Library |
| g32 | GFA BASIC Tokenized Source |
| gab | WinDev Skin Template |
