| mkt | Microsoft Visual FoxPro Configuration |
| mm1 | ActiveXperts SMS and MMS Toolkit Settings Data |
| mm4 | Mortgage Minder 4.0 Mortgage Configuration |
| mmdc | MediaMonkey Device Profile |
| mmg | Mkvmerge GUI Preferences |
| mmpf | CodeWarrior Preferences Data |
| mmrc | MADRIX 2 MIDI Remote Configuration Data |
| mmrx | MADRIX 3 MIDI Remote Configuration Data |
| mobileconfig | Apple Mobile Configuration |
| moog | Moog Configuration |
| mpdconf | Music Player Daemon Configuration |
| mpds | MADRIX Plexus Settings Data |
| mps | Casio WK-3000 Music Presets |
| msz | MADRIX 3 Compressed Setup |
| mtxcfg | MKVToolNix GUI Settings |
| mxu | MultiExchange Unit Configuration File |
| my | Yudit Settings |
| nacl | NameCleaner Internal Data |
| nam | Novell Netware Namespace Data |
| nanorc | GNU Nano Configuration |
| napr | NameCleaner Preferences Data |
| napt | Navicat Premium Data Transfer Profile |
| nca | Nikon Capture Color Adjustment |
| ncm | Nokia Configuration Message |
| ndc | IBM Personal Communications Connection Configuration |
| neop | Nord Electro 3 Organ Preset |
| nkp | Native Instruments Kontakt Presets |
| nlpb | Navicat for SQLite Backup Profile |
| nlpd | Navicat for SQLite Data Synchronization Profile |
| nlpeq | Navicat for SQLite Export Query Result Profile |
| nlpi | Navicat for SQLite Import Wizard Profile |
| nmdsdcid | Media Player Settings |
| nmpb | Navicat for MariaDB Backup Profile |
| nmpe | Navicat for MariaDB Export Wizard Profile |
| nmpeq | Navicat for MariaDB Export Query Result Profile |