| Abbreviation | Definition |
|---|---|
| FTMP | FontMap 3-dimensional Font Map file |
| FTN | Fortran language source code file (fixed form) |
| FTP | FTP Voyager Document file |
| FTS | Flex Image Transport Graphics file |
| FTS | Full-Text Search results file |
| FUS | FLAMES user settings (Ternion Corporation) |
| FVF | Flexible Vertex Format |
| FW | FrameWork Database file |
| FW2 | Framework II Database file |
| FW3 | Framework III Database file |
| FWEB | Fortran WEB |
| FX | FastLynx On-line guide |
| FXD | Phonebook (FAXit) |
| FXP | FoxPro Executable precompiled .prg file |
| FXS | WinFax Fax Transmit Format graphics file |
| FZP | Fargo Primera color printer Dye Sub printing support file |
| G | Applause Data chart |
| G16 | Compiled config (GoldED for DOS) |
| G3 | Bitmap graphics (Group 3 FAX file) |
| G8 | Green channel image data (24bit 3D animation) (Cubicomp PictureMaker) |