| fl7 | PCModWin MODTRAN Output Data |
| flame | Fractal Flames Data |
| flatpakref | Linux Flatpak Package Description |
| flatpakrepo | Linux Flatpak Repository Data |
| flb | FileMaker Pro Label Data |
| flc | FIGlet Control Data |
| fld | 3D Fassade Plus Field Data |
| fld | Hijaak Thumbnail Folder |
| fld | WinFlash Flashcard Settings |
| flexolibrary | Final Cut Pro Library Database |
| flf | Corel Paradox Delivered Form |
| flf | FIGlet Figletized Text Font |
| flf | FLAMES License Data |
| flf | Microsoft Dynamics NAV License File |
| flf | Navision Financials License Data |
| flg | MicroSim PCBoard Log Data |
| flg | Puppy Linux Partition Flag |
| fli | Autodesk Animator Mask Data |
| flib | Foxit Reader Library |
| flic | Autodesk Animator Mask Data |
| flinstaller | FL Studio Installer Data |
| flipchart | ActivInspire Flipchart |
| flk | AccountEdge Company Lock Data |
| flk | Folder Lock Data |
| flka | Folder Lock FAT32 Portable Locker File |
| flkb | Folder Lock NTFS Portable Locker File |
| flkey | Fruity Loops Studio License Key |
| fll | Micrografx Designer Fill Pattern Data |
| fll | TextPipe Pro Filter Data |
| flm | Autodesk AutoCAD Film Roll Data |
| flm | CyberLink MediaShow Data |
| fln | XMap Flight Plan Data |
| flo | LightCycler v3 Experiment Data |
| flo | RFFlow Flowchart Data |
| flo | WRAP Inflow IN Records Data |
