| .ftl |
FreeMarker Template File |
| .fcs |
Flow Cytometry Standard File |
| .fsm |
FreeSpace Mission File |
| .fml |
WWE RAW Character File |
| .fox |
Furcadia Art File |
| .fs2 |
FreeSpace 2 Saved Mission File |
| .ff |
Call of Duty 4 Fast File |
| .fst |
FL Studio State File |
| .far |
FARO Zone File |
| .forge |
Assassin's Creed Game Data File |
| .fps |
FPS Creator Segment File |
| .fpg |
FPS Creator Game Project File |
| .fl |
Freelancer Saved Game File |
| .frz |
Snes9x Saved State |
| .fgd |
Forge Game Data File |
| .fds |
Nintendo FDS ROM |
| .fos |
Fallout 3 Saved Game |
| .fssave |
Flight Simulator Save File |
| .fxt |
Grand Theft Auto Fake Text File |
| .fomod |
Fallout Mod Archive |
| .fcm |
fCraft World File |
| .ftc |
Dream League Soccer Asset File |
| .fuk |
Postal 2 Map File |
| .fpp |
Fortran Source Code |