The X
extension name file type Classification
F Fortran Source Code developer files
F2K Fortran Source Code File developer files
F90 Fortran 90 Source Code File developer files
F95 Fortran 95 Source Code File developer files
FBP wxFormBuilder Project developer files
FBP7 FinalBuilder 7 Project developer files
FBZ7 Compressed FinalBuilder 7 Project developer files
FCE ForeUI Custom Element File developer files
FCL ForeUI Custom Library File developer files
FD DataFlex Data File developer files
FEATURE SharePoint Feature File developer files
FGL Fifth Generation Language Source File developer files
FILTERS Visual C++ Project Filters File developer files
FIMPP FiM++ Source Code File developer files
FLA Adobe Animate Animation developer files
FOR Fortran 77 Source File developer files
FORTH Forth Language File developer files
FPM FPS Creator Map File developer files
FPP Fortran Source Code developer files
FPT Alpha Five Table Memo File developer files
FRAMEWORK Mac OS X Application Framework developer files
FRJ FreeForm-J Project File developer files
FRM Visual Basic Text Form developer files
FRX Visual Basic Binary Form File developer files
FRX FoxPro Report developer files
FS Visual F# Source File developer files
FSI Visual F# Signature File developer files
FSL Form•Z Script developer files
FSPROJ Visual F# Project File developer files
FSPROJ FireStarter Project File developer files
FSSCRIPT Visual F# Script developer files
FSX Visual F# Script File developer files
FTL FreeMarker Template File developer files
FTN Fortran Source Code File developer files
FXC FilePackager Configuration developer files
FXCPROJ FX Composer Project File developer files
FXL FaceFX Language File developer files
FXML FXML Source Code File developer files
FXPL Adobe Flash FXP Library developer files