| 1. | .mo | Object file (Modula-3) |
| 2. | .mob | Device definition (PEN Windows) |
| 3. | .mod | Kernel module (Windows 3.x) ◊ Model definitions (EPOC) ◊ Model file (Spice) ◊ Modula-2 language source code file (Clarion Modula-2) ◊ Music (Amiga MODule format) (DMP - FastTra… 0.3 KB |
| 4. | .moi | lisez.moi (read.me in French) |
| 5. | .mol | Chemical test (ethambutol) |
| 6. | .mon | Monitor description (ReadMail) |
| 7. | .moo | MoonRock language source code file (MoonRock) |
| 8. | .mop | Mopac chemical test |
| 9. | .mot | Document (Wavesoft) |
| 10. | .mov | Movie (AutoCAD AutoFlix) ◊ Timebased multimedia file (Apple QuickTime) |
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