M3D Corel Motion 3D animation

MAC MacPaint image

MAD Microsoft Access module

MAF Microsoft Access Form

MAK Visual Basic or MS Visual C++ Project

MAM Microsoft Access Macro

MAP Map file

MAP Duke Nukem 3D WAD game file

MAQ Microsoft Access Query

MAR Microsoft Access Report

MAS Lotus Freelance Graphics Smartmaster file

MAT Microsoft Access Table

MAX Paperport file

MAZ Hover maze data

MB1 Apogee Monster Bash data file

MCC Dialer10 calling card

MCS MathCAD image

MCW Microsoft Word for Macintosh document

MDA Microsoft Access add-in

MDB Microsoft Access database

MDE Microsoft Access MDE file

MDL Digital Tracker music module (MOD) file

MDL Quake model file

MDN Microsoft Access blank database template

MDW Microsoft Access Workgroup

MDZ Microsoft Access wizard template

MED Music Editor, OctaMED music module (MOD) file

MER Format for interchanging spreadsheet/database data; recognized by Filemaker, Excel, and others

MET Presentation Manager metafile

MI Miscellaneous

MIC Microsoft Image Composer file

MID MIDI music

MMF Microsoft Mail File

MMM Microsoft Multimedia Movie

MOD FastTracker, StarTrekker, Noise Tracker (etc.) music module file

MOD Microsoft Multiplan spreadsheet

MOV QuickTime for Windows movie

MPE MPEG animation

MPEG MPEG animation

MPG MPEG animation

MPP Microsoft Project file

MPP CAD drawing file format

MP3 MPEG Audio Layer 3 (AC3) file

MSG Microsoft Mail message

MSN Microsoft Network document

MSP Microsoft Paint bitmap

MTM MultiTracker music module (MOD) file

MUS Music

MVB Microsoft Multimedia Viewer file

MWP Lotus Wordpro 97 Smartmaster file