| flxmdl | OnScale Binary Model Data |
| flxprt | OnScale Command Log Data |
| flxwrn | OnScale Warnings Data |
| flz | WinFlash Compiled Flashcard |
| fm | FileMaker Pro Data |
| fm5 | FileMaker Pro Data |
| fma | FMAudit Exported Audit Data |
| fma | PermitMD FMA Form Definition File |
| fma | PTV VISSIM Matrix Data |
| fmap | Family Atlas Published Family Map |
| fmc | FME Desktop Catalog Data |
| fmc | MotionArtist Animated Clip |
| fmd | FARSITE Custom Fuel Model |
| fmdb | Ensoft Formulator Object Database |
| fmedb | Foto-Mosaik-Edda Mosaic Database |
| fmelic | FME License |
| fmf | FME Desktop Metafile |
| fmh | Family Medical History HD Data |
| fmi | FME Include File |
| fmk4 | FileMaker Pro for Mac Data |
| fml | OFML Scene Data |
| fml | Oracle Mirror List Data |
| fmm | FreeMind MindMap |
| fmod | Adobe Illustrator Flattening Module |
| fmp | Autodesk AutoCAD Font Map Data |
| fmp | FileMaker Pro Data |
| fmp | FLAMES Model Prototype |
| fmp12 | FileMaker Pro 12 Database |
| fmp3 | FileMaker Pro for Mac Database |
| fmpp | FLAMES Model Prototype Data |
