| mailloc | Mac OS X Finder Mail Internet Location |
| mailstationery | Apple Mail Stationery Data |
| mailtoloc | Mac OS X Finder Mail Internet Location |
| mailview | Microsoft Mail View Data |
| main | FileMaker Pro Dictionary Data |
| maj | CAMduct Job Data |
| maker | Adobe FrameMaker Data |
| mal | RSView Machine Edition Alarms Data |
| mamc | Auto Mouse Click Script |
| maml | Microsoft Assistance Markup Language Data |
| mamp | MAMP Related Data |
| man | AquaCrop Field Management Data |
| man | Blaise Manipula Setup Data |
| man | Windows Mandatory User Profile Data |
| manifest | Steam Manifest Data |
| map | 3Com Network Supervisor Network Map |
| map | BrainVoyager QX Map Data |
| map | Hex Workshop Character Map |
| map | Ingres Termcap Mapping Data |
| map | Leadwerks Map Data |
| map | Map Data |
| map | Mapjects Server Webparts Data |
| map | Micrografx Picture Publisher Image Map Data |
| map | NI REAKTOR Wavetable Data |
| map | Offline Explorer Map Data |
| map | Poser 3D Map Data |
| map | Rigs of Rods Key Assignments Data |
| map | TECkit Mapping Table |
| map | WAsP Terrain Map |
| map16 | SNES Map16 Tile Data |
