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| Extension | File Type Developer | File Category | File Type Description | Primary Software | Primary Software Developer |
|---|---|---|---|---|---|
| .F06 | Microsoft Corporation | Font Files | MS-DOS Screen Text 6 Pixels Height Font | MS-DOS | Microsoft Corporation |
| .F07 | Unknown Developer | Font Files | DOS 7-pixel Screen Font | Unknown Software | Unknown Developer |
| .F11 | Microsoft Corporation | Font Files | DOS Screen Text 11 Pixels Height Font File | MS-DOS | Microsoft Corporation |
| .F12 | Microsoft Corporation | Font Files | DOS Screen Text 12 Pixel Height Font File | MS-DOS | Microsoft Corporation |
| .F13 | Microsoft Corporation | Font Files | MS-DOS Screen Text 13 Pixels Height Font | MS-DOS | Microsoft Corporation |
| .F3F | Viva Media, LLC | Font Files | Crazy Machines Font File | Crazy Machines | FAKT Software |
| .F6 | Various Developers | Font Files | Fonts File | macOS | Apple |
| .F7 | Various Developers | Font Files | Fonts File | macOS | Apple |
| .F8 | Various Developers | Font Files | Fonts File | macOS | Apple |
| .FFIL | Apple | Font Files | Mac Font Suitcase | Font Book | Apple |
| .FN3 | Software Publishing Corporation (SPC) | Font Files | Harvard Graphics 3.0 Font File | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
| .FNT | Open Source | Font Files | Windows Font File | Microsoft Windows | Microsoft Corporation |
| .FO1 | Borland | Font Files | Borland Turbo C Font File | Turbo C | Borland |
| .FO2 | Borland | Font Files | Borland Turbo C Font Data | Turbo C | Borland |
| .FOG | FontLab | Font Files | Fontographer Font Database File | Fontographer | FontLab |
| .FON | Microsoft Corporation | Font Files | Generic Font File | Microsoft Windows Font Viewer | Microsoft Corporation |
| .FONT | LucasArts Entertainment Company, LLC | Font Files | Font Data | Apple OS X | Apple |
| .FONTS | Unknown Developer | Font Files | Font File | Unknown Software | Unknown Developer |
| .FOT | Microsoft Corporation | Font Files | Font Resource File | Microsoft Windows | Microsoft Corporation |
| .FRF | Fast Report | Font Files | FreeReport Form File | FreeReport | Fast Report |
| .FRS | Corel | Font Files | Corel WordPerfect Screen Font Resource File | Corel WordPerfect | Corel |
| .FXR | Oracle Corporation | Font Files | Oracle Font Cross-Reference Data | Oracle Documaker | Oracle Corporation |
| .FY | Unknown Developer | Font Files | Fontasy Publisher Font | Fontasy Publisher | Unknown Developer |
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