Extensions: 'M'
| Format | Description | Author | File / Link |
|---|---|---|---|
| M3D | Mpeg Audio Datafile Format Specification | Predrag Supurovic | Download |
| M3U | The M3U (.m3u) Playlist File Format | Download | |
| M8 | Heretic2 image file format | Download | |
| MA | Maya ASCII Format from Alias/Wavefront | Gerhard W. Gruber | Download |
| MAC ALIAS | Mac OS Alias Record Format | Shan Weber | Download |
| MACBINARY | Macbinary programming information | LINK | |
| MACDRAW | MacDraw Format | Download | |
| MACH-O | Mac OS X ABI Mach-O File Format Reference | Apple Inc. | LINK |
| MAP | Borland MAP file format | Brad Kimmel | Download |
| UMN MapServer Mapfile (MAP & SYM) | LINK | ||
| Settlers 2 Gold Edition savegames and Sid Meyer's Colonization map files | Fenrisulv | Download | |
| MAR | Microsoft Archive Files Format | Lloyd Kinsella | Download |
| MAT | Matlab MAT file format version 5 (PDF) | Math Works Inc. | Download |
| MBF | Converting between Microsoft Binary Format and IEEE formats | Inprise | Download |
| MBR | Master Boot Records | PowerJoe | LINK |
| DOS Partition Tables | Andries Brouwer | LINK | |
| MBX | MBX Mailbox file format | Michael Santovec | Download |
| MD2 | Quake2 Model File (md2) Format Specification | Daniel E. Schoenblum | Download |
| MD3 | Quake 3 MD3 file format | Download | |
| MD5 | MD5 File Format | Joe Geluso | LINK |
| MDB | Open source Access MDB tools | LINK | |
| MDL | DigiTrakker MDL/IST/SPL file formats | Prodatron/n-Factor | Download |
| MED | Med/OctaMed MMD0/MMD1 file formats | Teijo Kinnunen | Download |
| MEDIA INFO | General Media Info, Common Frame Sizes/Resolutions Sample Rates and encoding | Shan Weber | Download |
| MELCO | EXP - Embroidery file for Melco machines | Download | |
| METASTOCK | Metastock / Computrac File Formats | Jose Da Silva | Download |
| Metastock Data Format | Download | ||
| MGF | Materials and Geometry 3D rendering format | Greg Ward | LINK |
| MGI | Origin MGI Audio File Formats (.MGI, .TRE) | Valery V. Anisimovsky | Download |
| MGL | MosASCII Graphics Library Format (MGL) 1.0A | Robert DeFusco | Download |
| MHK | Broderbund Mohawk Archive Format | Gabe Bauman | Download |
| MID | The USENET MIDI Primer (note .KAR files are standard MIDI files) | Bob McQueer | Download |
| MIDI Sample Dump Standard | Download | ||
| General MIDI Level 1 Spec. | Jeff Mallory | Download | |
| MIDI Manufacturers Association - the definitive source of MIDI information. | LINK | ||
| Standard MIDI File Format | LINK | ||
| Standard MIDI File Format | Dustin Caldwell | Download | |
| MIF | MapInfo Interchange Format (.MIF and .MID) | Download | |
| MIFF | Magick Image File Format | LINK | |
| Machine Independant File Format | Download |
How to help
If you have any better information or if you find problems with these files or links please .