| .fmt |
FoxPro Format File |
| .frx |
FoxPro Report |
| .fob |
Dynamics NAV Object Container File |
| .fbk |
AutoCAD Civil 3D Field Book File |
| .flf |
Microsoft Dynamics NAV License File |
| .ful |
Microsoft Backup File List |
| .fx |
Direct3D Effects File |
| .fl |
Freelancer Saved Game File |
| .fsscript |
Visual F# Script |
| .fsi |
Visual F# Signature File |
| .ffx |
After Effects Preset File |
| .fdm |
Exchange Forms Designer Form Message |
| .fssave |
Flight Simulator Save File |
| .flow |
Expression SketchFlow Data File |
| .feedback |
Expression SketchFlow Feedback File |
| .fwp |
Microsoft Expression Web Package |
| .ffa |
Find Fast Status File |
| .ffl |
Find Fast Document List |
| .ffo |
Find Fast Document Properties Cache |
| .ffd |
ffDiaporama Project File |
| .fid |
File Expander Engine Descriptions Database |
| .filters |
Visual C++ Project Filters File |
| .fnd |
Windows Saved Search |
| .feature |
SharePoint Feature File |