| Extension |
Meaning / Link |
| .M |
Matlab
Function, Macro Source, Mathematica File |
| .M?? |
Ingres
Modify Table/Index File (?? = Hex 00 to FF) |
| .M18 |
Accolade Golf Course
File |
| .M1V |
MPEG File |
| .M3 |
ModuleA 3 Program
File |
| .M3A |
MPEG Archive
Enhanced .M3U Playlist File |
| .M3D |
3D Animations Macro,
Corel Motion 3D Animation |
| .M3U |
MPEG URL |
| .MA3 |
Harvard
Macro (Harvard Graphics taken over by Serif) |
| .MAC |
MacPaint Bitmap
Graphic, Macro (various) |
| .MAD |
MS
Access Module Shortcut |
| .MAF |
MS
Access Form Shortcut |
| .MAG |
Picture File, MS
Access Diagram Shortcut |
| .MAI |
Mail |
| .MAK |
Make File (compiler
project file) |
| .MAM |
MS
Access Macro Shortcut |
| .MAN |
Manual |
| .MAP |
Image, Color
Palette, Duke Nukem WAD File, Ingres
Termcap Mapping File, Linker Map, Micrografx
Picture Publisher Format Data |
| .MAQ |
MS
Access Query Shortcut |
| .MAR |
MS
Access Report Shortcut |
| .MAS |
Focus Master Data
Definition, MS
Access Stored Procedures, Lotus
Freelance Graphics Smartmaster File |
| .MAT |
Sound File, Matlab
Variables Binary File, MS
Access Table Shortcut |
| .MAV |
MS
Access View Shortcut |
| .MAW |
MS
Access Data Access Page |
| .MAX |
Kinetix's 3D Studio
MAX Scene, Paperport File, OrCAD
Layout File |
| .MAZ |
Hover Maze Data,
Division's dVS/dVISE File |
| .MB |
Paradox Memo Holder |
| .MB1 |
Apogee
Monster Bash Data File |
| .MBF |
MS
Money Backup File |
| .MBK |
dBase
IV Multiple Index Backup |
| .MBX |
Mailbox Message File
(Outlook v1-4
or Eudora) |
| .MCC |
Mathcad
Configuration, Dialer10 Calling Card, Monu-Cad Pro CAD File |
| .MCD |
Mathcad Document,
Monu-Cad Pro CAD File |
| .MCF |
Mathcad Font |
| .MCI |
Media Control
Interface Command Set |
| .MCL |
Multimedia Manager
Collection File |
| .MCP |
Mathcad Printer
Driver |
| .MCR |
DataCAD
Keyboard Macro File |
| .MCS |
MathCAD Format File |
| .MCW |
Word for Macintosh
Text File |
| .MCX |
Graphic File |
| .MD |
Compressed Archive
File |
| .MDA |
MS
Access Add-in, MS
Access 2 Workgroup |
| .MDB |
MS
Access Database, MS
Access Application |
| .MDE |
MS
Access Database File |
| .MDF |
Menu Definition File |
| .MDL |
Digitrakker
Music Module (by n-FaCToR), Quake Model File |
| .MDM |
Telix Modem
Definition |
| .MDN |
MS
Access Blank Database Template |
| .MDP |
MS
Developer Studio Project |
| .MDT |
MS
Access Add-in Data |
| .MDW |
MS
Access Workgroup Information |
| .MDX |
dBase
IV Multiple Index |
| .MDZ |
MS
Access Wizard Template |
| .ME |
Information (i.e.,
READ.ME) |
| .MEB |
WordPerfect Macro
Editor Bottom Overflow File |
| .MED |
WordPerfect Macro
Editor Delete Save, OctaMED Tracker Module |
| .MEM |
WordPerfect Macro
Editor Macro, Memory File of Variables, MS
FoxPro Memory Variable Save File |
| .MEN |
Menu |
| .MEQ |
WordPerfect Macro
Editor Print Queue |
| .MER |
WordPerfect Macro
Editor Resident Area, Data Interchange Format |
| .MES |
Message File,
WordPerfect Macro Editor Work Space |
| .MET |
WordPerfect Macro
Editor Top Overflow File, Presentation Manager Meta File,
OmniPage Document |
| .MEU |
DOS Shell Menus |
| .MEX |
Matlab
Executable Command, WordPerfect Macro Editor Expound File |
| .MF |
MetaFont Text File |
| .MFF |
MIDI File Format |
| .MGC |
MGCSoft Equation
Editor File |
| .MGF |
Image File, Micrografx
Font, Materials and Geometry Format File |
| .MGM |
MGCSoft Equation
Editor Macro File |
| .MH |
Graphic File |
| .MHG |
Multimedia File |
| .MHT |
MS MHTML Document
(Archived Web Page) |
| .MI |
Miscellaneous |
| .MIC |
MS Image Composer
File |
| .MID |
MIDI File |
| .MIF |
MIDI Instrument, Adobe
FrameMaker Interchange Format |
| .MIL |
Group 4 Fax File |
| .MIM |
Multi-Purpose
Internet Mail Extensions (MIME) File |
| .MIX |
Power C Object File,
Multilayer Picture File (MS PhotoDraw
2000 & MS
Picture It!), Command & Conquer Movie/Sound File |
| .MK |
Make File |
| .MKE |
Make File |
| .MKI |
Picture File |
| .MLB |
Macro Library |
| .MLI |
Encyclopedia Media
List, 3D Studio's
Material-Library File |
| .MLS |
Miles Sound Tools
Compressed DLS |
| .MM |
Macro Mania Macro |
| .MMC |
Media Catalog
|
| .MME |
Multi-Purpose
Internet Mail Extensions (MIME) File |
| .MMF |
Meal Master Format, MS
Mail File |
| .MMM |
Animation MS
Multimedia Movie |
| .MMP |
MindManager Player
Play List File |
| .MMS |
Miles Sound Tools
(Midi+DLS/MLS) |
| .MMZ |
MusicMatch Theme
File |
| .MN2 |
Descent2
Mission File |
| .MN3 |
Descent3
Mission File |
| .MND |
AutoCAD
Menu Program File, MNI Mandelbrot for Windows |
| .MNG |
Animation Shop
Animation, Multi-image Network Graphics |
| .MNT |
Foxpro
Menu Memo |
| .MNU |
Menu File (various) |
| .MNW |
Menu File (various) |
| .MNX |
AutoCAD
Compiled Menu File, Foxpro
Menu |
| .MNY |
MS
Money File |
| .MOB |
Device Definitions |
| .MOD |
Music File,
ModuleA-2 Program File, Windows Kernel Module, Amiga and PC
Tracker Module, MS Multiplan Spreadsheet |
| .MOV |
QuickTime Video
Clip, Apple QuickTime Audio |
| .MOZ |
Netscape Temp File |
| .MP |
Multiplan File |
| .MP1 |
MPEG Audio Stream,
Layer I |
| .MP2 |
MPEG Audio Stream,
Layer II |
| .MP3 |
MPEG Audio Stream,
Layer III |
| .MPA |
MPEG Audio Stream,
Layer I, II or III |
| .MPC |
MS
Project Calender |
| .MPD |
Mini Port Driver, MS
Project Database File |
| .MPE |
MPEG Movie Clip |
| .MPG |
MPEG Animation, MPEG
1 System Stream |
| .MPJ |
RoboHTML Project |
| .MPM |
WordPerfect
MathPlan Macro |
| .MPP |
MS
Project File, CAD Drawing File |
| .MPQ |
Blizzard
Game Data File |
| .MPR |
Foxpro
Program |
| .MPS |
Multimedia File |
| .MPT |
MS
Project Template File |
| .MPV |
MS
Project View |
| .MPX |
Foxpro
Compiler Menu, MS
Project Export File |
| .MRB |
Multiple Resolution
Bitmap Graphic |
| .MRI |
MRI Scan |
| .MRK |
Informative Graphics
Markup File |
| .MRS |
WordPerfect
Macro Resource File |
| .MS |
Checksum File for
Anti-Virus |
| .MSA |
Magic Shadow Archive |
| .MSG |
Program Message,
OzWin Message/Mail File, MS
Mail Message |
| .MSH |
MASH (The Microsoft
Agent Scripting Helper) |
| .MSI |
Windows Installer
File |
| .MSK |
Autodesk
Mask File, PaintShop Pro Mask
File |
| .MSN |
MS Network Document,
Descent Mission File |
| .MSP |
MS Paint Graphic
File, Windows Installer Patch |
| .MST |
Minispecification,
Windows SDK Setup Script |
| .MSW |
Word
Text File |
| .MTH |
Derive Math File |
| .MTM |
Sound File,
MultiTracker Music Module |
| .MTV |
Picture File |
| .MTW |
Minitab Data File |
| .MU |
Quattro
Menu |
| .MUL |
Ultima Online Game |
| .MUP |
Music Publisher File |
| .MUS |
Audio File |
| .MVB |
Database, MS
Multimedia Viewer File |
| .MVE |
Interplay Video File
[Descent2] |
| .MVF |
Movie Stop Frame
File |
| .MWP |
Lotus
Wordpro 97 Smartmaster File |
| .MXT |
MS
C |
| .MYS |
Myst Saved Game |
| .MZ |
MOZART Music
Document |
| .MZT |
MOZART Template File |
| |
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