| Extension | File Description |
| .MODULAE | Uncommon Files |
| .module | Uncommon Files |
| .MODULES | Uncommon Files |
| .MOE | Uncommon Files |
| .MOG | Uncommon Files |
| .MOGG | Uncommon Files |
| .MOH | Uncommon Files |
| .MOJ | Uncommon Files |
| .MOK | Uncommon Files |
| .MOL2 | Uncommon Files |
| .MON | Uncommon Files |
| .MONDAY | Uncommon Files |
| .MONICA | Uncommon Files |
| .MONO | Uncommon Files |
| .MONS | Uncommon Files |
| .MONSTER2 | Uncommon Files |
| .MONTE | Uncommon Files |
| .MOO | Uncommon Files |
| .MOOD | Uncommon Files |
| .MOON | Uncommon Files |
| .MOP | Uncommon Files |
| .MOQ | Uncommon Files |
| .MOR | Uncommon Files |
| .MORE | Uncommon Files |
| .MORTBATS | Uncommon Files |
| .MOTBIN | Uncommon Files |
| .MOTIF | Uncommon Files |
| .MOUNT | Uncommon Files |
| .MOUSE | Uncommon Files |
| .MOUSETEXT | Uncommon Files |
| .MOVE | Uncommon Files |
| .MOVEMON | Uncommon Files |
| .MOVERADDIN | Uncommon Files |
| .MOVERBACKU | Uncommon Files |
| .MOVERCONFI | Uncommon Files |
| .MOVERDB | Uncommon Files |
| .MOVERREG | Uncommon Files |
| .MOVERTEMPL | Uncommon Files |
| .MOVES | Uncommon Files |
| .MOW | Uncommon Files |
| .MOY | Uncommon Files |
| .MOZART | Uncommon Files |
| .MOZEML | Uncommon Files |
| .MP+ | Uncommon Files |
| .MP0 | Uncommon Files |
| .MP3MAN | Uncommon Files |
| .MP3PRO | Uncommon Files |
| .MP5 | Uncommon Files |
| .MP6 | Uncommon Files |
| .MP7 | Uncommon Files |
| .MP8 | Uncommon Files |
| .MP9 | Uncommon Files |
| .MPCB | Uncommon Files |
| .MPCF | Uncommon Files |
| .MPDEX | Uncommon Files |
| .MPE.EXE | Uncommon Files |
| .MPFA | Uncommon Files |
| .MPG4 | Uncommon Files |
| .MPH | Uncommon Files |
| .MPN | Uncommon Files |
| .MPNT | Uncommon Files |
| .MPQE | Uncommon Files |
| .MPU | Uncommon Files |
| .MPY | Uncommon Files |
| .MQ0 | Uncommon Files |
| .MQ1 | Uncommon Files |
| .MQ2 | Uncommon Files |
| .MQ3 | Uncommon Files |
| .MQ5 | Uncommon Files |
| .MQ6 | Uncommon Files |
| .MQ7 | Uncommon Files |
| .MQ8 | Uncommon Files |
| .MQ9 | Uncommon Files |
| .MQA | Uncommon Files |
| .MQB | Uncommon Files |
| Extension | File Description |
| .MQC | Uncommon Files |
| .MQD | Uncommon Files |
| .MQE | Uncommon Files |
| .MQF | Uncommon Files |
| .MQG | Uncommon Files |
| .MQH | Uncommon Files |
| .MQI | Uncommon Files |
| .MQJ | Uncommon Files |
| .MQK | Uncommon Files |
| .MQL | Uncommon Files |
| .MQM | Uncommon Files |
| .MQN | Uncommon Files |
| .MQP | Uncommon Files |
| .MQQ | Uncommon Files |
| .MQR | Uncommon Files |
| .MQS | Uncommon Files |
| .MQT | Uncommon Files |
| .MQU | Uncommon Files |
| .MQW | Uncommon Files |
| .MQX | Uncommon Files |
| .MQZ | Uncommon Files |
| .MR0 | Uncommon Files |
| .MR1 | Uncommon Files |
| .MR2 | Uncommon Files |
| .MR3 | Uncommon Files |
| .MR4 | Uncommon Files |
| .MR5 | Uncommon Files |
| .MR6 | Uncommon Files |
| .MR7 | Uncommon Files |
| .MR8 | Uncommon Files |
| .MR9 | Uncommon Files |
| .MRA | Uncommon Files |
| .MRD | Uncommon Files |
| .MRE | Uncommon Files |
| .MRES | Uncommon Files |
| .MRF | Uncommon Files |
| .MRH | Uncommon Files |
| .MRI | Uncommon Files |
| .MRJ | Uncommon Files |
| .MRL | Uncommon Files |
| .MRLV | Uncommon Files |
| .MRM | Uncommon Files |
| .MRN | Uncommon Files |
| .MRO | Uncommon Files |
| .MRP | Uncommon Files |
| .MRQ | Uncommon Files |
| .MRR | Uncommon Files |
| .MRT | Uncommon Files |
| .MRU | Uncommon Files |
| .MRV | Uncommon Files |
| .MRX | Uncommon Files |
| .MRY | Uncommon Files |
| .MRZ | Uncommon Files |
| .MS0 | Uncommon Files |
| .MS2 | Uncommon Files |
| .MS3 | Uncommon Files |
| .MS4 | Uncommon Files |
| .MS5 | Uncommon Files |
| .MS6 | Uncommon Files |
| .MS7 | Uncommon Files |
| .MSA | Uncommon Files |
| .MSB | Uncommon Files |
| .MSBCM | Uncommon Files |
| .MSCPC | Uncommon Files |
| .MSCR | Uncommon Files |
| .MSDEV | Uncommon Files |
| .MSDL | Uncommon Files |
| .MSG1 | Uncommon Files |
| .MSG2 | Uncommon Files |
| .MSG3 | Uncommon Files |
| .MSHR | Uncommon Files |
| .MSJ | Uncommon Files |
| .MSL | Uncommon Files |
| .MSNBAK | Uncommon Files |
| .MSPLG | Uncommon Files |
