M MATLAB Function or Script (The MathWorks, Inc.)

M Objective-C Source

M Miranda language Script File

M Mathematica Functions and Commands (Wolfram Research, Inc.)

M Maple Common Binary File (Maplesoft, a Division of Waterloo Maple Inc.)

M Limbo Interface Declaration

M Desktop Color Separation Specification Magenta Layer

M Cliq Accessories Datebook Modification File

M Brief Macro Source

M Winamp3 Uncompiled Script

M$S MindStor Firmware Update File

M0D Malete Options (Record 0) File (OpenIsis)

M11 Farallon's MacRecorder Format Sampling Rate 11k

M11 MASS11 Text File

M12 SHARP MZ-series Emulator File

M12 Hydrographs Synthesis Project File

M12 Proprietary Data Format for Interchange of Defense Form Data with Mil-Pac Technology Software Products

M12 S-BASIC File

M14 Steuer2001 File

M15 thinEdge Model (Petr Schreiber)

M15 Apple MPEG-1 Video (Apple Computer, Inc.)

M18 Accolade Golf Course File

M1A Apple MPEG-1/2 Audio (Apple Computer, Inc.)

M1A MPEG-1 Audiostream

M1C IBM Voice Type Language Newuser File

M1I IBM Voice Type Language Newuser File

M1PG iFinish Video Clip (Media 100 Inc.)

M1S MPEG Media File

M1V MPEG-1 Video File

M2 Modula 2 Language Source

M22 Farallon's MacRecorder Format Sampling Rate 22k

M2A Apple MPEG-1/2 Audio (Apple Computer, Inc.)

M2A MPEG-2 Audio

M2C IBM Voice Type Language Newuser File

M2I IBM Voice Type Language Newuser File

M2O Modula Fitted Modula2 File

M2P MPEG-2 Program Stream Format File

M2S MPEG-2 Audio and Video

M2V MPEG-2 Video Only File

M3 Modula 3 Program File

M32 Dr.T MIDI File

M3A MPEG Archive Enhanced .M3U Playlist File

M3C IBM Voice Type Language Newuser File

M3D Corel Motion 3D Animation

M3D 3D Animations Macro

M3D EverQuest File

M3I IBM Voice Type Language Newuser File

M3S Myst III Exile Saved Game

M3U MP3 Playlist File

M3URL MP3 Playlist File

M4 UNIX M4 Preprocessor File

M4 Meta4 Source Code (Meta4)

M4A MPEG-4 Audio Layer

M4B MPEG-4 Audio Layer Bookmarkable File

M4C IBM Voice Type Language Newuser File

M4I IBM Voice Type Language Newuser File

M4P Protected AAC File (Apple Computer, Inc.)

M4U Ogg Media Redirector File

M4V MPEG-4 Video File

M68 Turbo Pascal DOS File (Borland Software Corporation)

M7 Farallon's MacRecorder Format Sampling Rate 7k

M75 Apple MPEG-1 Video (Apple Computer, Inc.)

M8 Grlib Scry PCserv File

M8 Heretic II MipMap

M?? Ingres Modify Table/Index File (Computer Associates International, Inc.)

MA hDC Products for MicroApp Executable Files

MA Homeworld Maya Scene File (Sierra Entertainment, Inc.)

MA Diablo II Map File (Blizzard Entertainment)

MA Mathematica ASCII File (Wolfram Research, Inc.)

MA Maya ASCII Scene (Alias Systems, a division of Silicon Graphics Limited)

MA0 Diablo II (Blizzard Entertainment)

MA1 SKY Mobile Phone Icon/Ringtone

MA1 Diablo II (Blizzard Entertainment)

MA2 Diablo II (Blizzard Entertainment)

MA3 Diablo II (Blizzard Entertainment)

MA3 Harvard Graphics Macro (Harvard Graphics)

MAB Mozilla (Netscape) Personal Addressbook or Collected Addressbook (Mozilla.org)

MAC Geometry II Plus Macro File (Cabrilog)

MAC MINITAB Macro (Minitab, Inc.)

MAC Macro

MAC MacPaint Bitmap Graphic

MAC Access Shortcut (Microsoft)

MAC TASM Macro (Borland Software Corporation)

MACAPPL MacDrive (Mediafour Corporation)

MACP MacPaint Bitmap Graphic

MAD Game Movie File (Electronic Arts, Inc.)

MAD Homeworld Model Animation Data (Sierra Entertainment, Inc.)

MAD Access Module Shortcut (Microsoft)

MAD Mlat AdLib Tracker

MADSTATE Homeworld Model Animation Script (Sierra Entertainment, Inc.)

MAE Maestro File

MAF Access (Microsoft)

MAFF Firefox Saved Web Page Archive (The Mozilla Organization)

MAG MPS Magro Paint System Graphic

MAG MagIchan Graphic

MAG Magenta Color Separation (Adobe)

MAG Fortis and File Magic Document File (Westbrook Technologies, Inc.)

MAG Magic Mail Monitor Mailbox File

MAG Access Diagram Shortcut (Microsoft)

MAG Magic 1 2 3 Acounting File (Universal Systems)

MAGIC Magic Mail Monitor Mailbox

MAH Mahjongg Solitaire Settings

MAI Pegasus Mail Message Directory (David Harris)

MAI VAX Mail

MAI MS Mail Message

MAI Sony Video Thumbnail

MAIL NeoPlanet Mail Client

MAILHOST E-mail Server Preferences File (Microsoft)

MAILVIEW MSN Mail Message List (Microsoft Corporation)

MAJ Profile Master 2000 Job Data (MAP Ltd.)

MAK Visual C++ Project (Microsoft)

MAK Visual Basic Ver. 3.0 Project (Microsoft)

MAK Make File

MAKE Makefile

MAKEFILE Makefile

MAKETAIL Sourcecontrol File

MAKI Winamp3 Compiled Script

MAL Connect Server Configuration (AvantGo, Inc.)

MAL Webalizer.01 Language File

MAM Access Macro Shortcut (Microsoft)

MAN Manual

MAN Windows 2000 Mandatory User Profile

MANIFEST Windows Visual Stylesheet XML File (Microsoft Corporation)

MANX Manual File

MAP MAPIMail

MAP Micrografx Picture Publisher Format Data

MAP Pro/ENGINEER (PTC)

MAP Command & Conquer Red Alert 2 Mission File (Westwood Studios)

MAP PROGNOSIS Map Document File

MAP 3Com Network Supervisor Network Topolgy Map (3Com)

MAP Manifold Map

MAP ColorMAP Intensities and Indices Color Palette

MAP Visual Studio .NET 2002 Linker Map (Microsoft)

MAP DIV Game Studio Map

MAP Duke Nukem Game Level Data File

MAP Debug Info Used by Some Programming Languages

MAP SpellForce Level Map (JoWooD Productions Software AG)

MAP Fenix Map

MAP Hex Workshop Hex Editor Character Map (BreakPoint Software, Inc.)

MAP OziExplorer Map (Des & Lorraine Newman)

MAP Geography Maps

MAP Image

MAP Ingres Termcap Mapping File (Computer Associates International, Inc.)

MAP Color Palette

MAP Carnivores / Ice Age Map File (Action Forms, Ltd.)

MAP MapInfo Map (MapInfo Corporation)

MAP WorldCraft Quake/Half-Life Game Level File

MAP Server-side Image Map

MAP Diablo II Map (Blizzard Entertainment)

MAP Blood Game File Map

MAP General Surfing Map

MAP Poser 3D Map File

MAP AccView Network Map

MAP Route 66 Card Document

MAP Atlas MapMaker Map

MAPF MainActor Project (MainConcept AG)

MAPIMAIL Mail SentTo Drop (Microsoft)

MAPIMAIL Outlook Express Mail File (Microsoft)

MAPISEND MAPISEND File (Microsoft)

MAPLET Maplet Design File (Blitz Research Ltd.)

MAPSAO Aleph One Maps (Marathon Open Source)

MAQ Access Query Shortcut (Microsoft)

MAR Bibliographic Data Format

MAR VAX Macro Assembly Program

MAR Pegasus Mail Attributes Records Per User (David Harris)

MAR Access Report Shortcut (Microsoft)

MAR MSN Archive (Microsoft Corporation)

MAR Mozilla Archive (Mozilla)

MARM EPOC Makefile for MARM Platform

MAS Freelance Graphics Smartmaster File (IBM)

MAS Make A Storybook Storybook (Kennard Consulting)

MAS Focus Master Data Definition

MAS QuickCard File

MAS Access Stored Procedures (Microsoft)

MASS Mass Downloader Partial Download (MetaProducts Corporation)

MASSAGESOAPBOOK WinCity Massage SOAP Notes Soap Book (WinCity Custom Software, Inc.)

MAT 3D Studio (Autodesk, Inc.)

MAT Access Table Shortcut (Microsoft)

MAT Animation:Master Material (Hash)

MAT ArcView Geocoding Matching Parameters File (ESRI)

MAT CRiSP Harvest File

MAT Ox Object-Oriented Matrix Programming Language Matrix File

MAT Freelancer Model Textures File (Microsoft)

MAT Poser 3D Pose File

MAT Pro/ENGINEER Material Properties File (PTC)

MAT Sound File

MAT MATLAB Variables Binary File (The MathWorks, Inc.)

MATH Amaya

MAUC Multi-Channel Server (MCS) Component Policy Editor Audio Component (Volantis Systems Ltd.)

MAUD Sound File

MAV Access View Shortcut (Microsoft)

MAW Access Data Access Page (Microsoft)

MAX 3D Studio Scene (Autodesk, Inc.)

MAX OrCAD Layout File (Cadence Design Systems, Inc.)

MAX Max Source Code

MAX Kinetix's 3D Studio MAX Scene

MAX PaperPort Scanned Image (ScanSoft Inc.)

MAX OmniPage Image (ScanSoft, Inc.)

MAX Maximizer Contact & E-business Program

MAX PS2 Powersave File

MAZ Hover Maze Data

MAZ Division's dVS/dVISE File

MAZ 3ds Max Archived Network Rendering Job (Autodesk, Inc.)

MB Paradox Memo Holder

MB MapBasic Program (MapInfo Corporation)

MB Mathematica Binary File (Wolfram Research, Inc.)

MB Maya Binary Scene (Alias Systems, a division of Silicon Graphics Limited)

MB1 Apogee Monster Bash Data

MBA Martus Human Rights Bulletin System (Benetech)

MBB MannaBook (MannaBook Software, Inc.)

MBD Multimedia Builder MP3 Authoring File

MBD Revolution EDX Catalog (4pi Analysis, Inc.)

MBF Money Backup File (Microsoft)

MBF Corel Visual DTD Document Type Definition for SGML

MBFAVS Stardent AVS X Image

MBFS Stardent AVS X Image

MBG MS Mail Mailbag

MBG Mailbag Assistant E-mail Archive

MBI MBasic Source Code

MBK VersaPro Motion Block Backup

MBK Atari

MBK dBASE IV Multiple Index Backup

MBL Logger Pro Experiment Data File (Vernier Software & Technology)

MBM SymbianOS Multi BitMap Image

MBOX Unix Mbox Format Mail File

MBP Medbasin Project File (National Technical University of Athens, Laboratory of Reclamation Works & Water Resources Management)

MBP Balder Multiboot Project (HCData)

MBR AS/400 Physical File Member (IBM)

MBS Mailbag Assistant Script

MBS Micrografx Picture Publisher Brush Shape

MBT HASLEMERE / Other MBT Applications MBT Data File (Modern Business Technology Limited)

MBT ecBuilder Template

MBTN Multi-Channel Server (MCS) Component Policy Editor Button Image Component (Volantis Systems Ltd.)

MBU Neverwinter Nights Music File

MBV Corel.visualDTD.7

MBW MarketBrowser

MBX MapBasic Compiled Program (MapInfo Corporation)

MBX Database Index; dBASE Index

MBX Mailbox Message File

MC PlaySaver and PSEmuPro Memory Card Save and Single Game Save

MC Modula-3 M3CG intermediate Language File

MC MetaCard Script

MC NRC Inspection Manual Chapter

MC Windows Localized Message Table Resource

MC$ Magic Xchange Package

MC1 MedCalc Data File

MC2 Mastercook File (Sierra)

MC3 Bridge Design Modeler 3D Match-Casting Geometry Control

MC4D Cinema 4D v4.x Object (MAXON Computer GmbH)

MC5 Grafic Jpg Bcc file/microsoft C v5 related file

MC6 C File/Makefile (Microsoft)

MC7 Mastercam 7 File (CNC Software, Inc.)

MC8 Mastercam 8 File (CNC Software, Inc.)

MC9 Mastercam 9 File (CNC Software, Inc.)

MCA ModCA IOCA

MCA i-deas Web ACCESS File

MCA HFS Medicare Auditor Medicare Cost Audit (Health Financial Systems)

MCB Merak Email Server Configuration Backup (IceWarp Ltd.)

MCB Grlib Ravekit File

MCC VectorWorks/MiniCAD File

MCC Mylar City Character Editor

MCC Monu-Cad Pro CAD File

MCC MathCAD Configuration (Mathsoft Engineering & Education Inc.)

MCC Amiga MUI External Class/Library (SASG)

MCC Incite Media Assistant File

MCC The Microsoft Network Shortcut (Microsoft)

MCC Dialer10 Calling Card

MCD VectorWorks Drawing (Nemetschek)

MCD Bleem! Memory Card Save

MCD Craig McDowall.com NotePad

MCD MediaCD Configuration File (Bot Productions)

MCD Monu-Cad Pro CAD File

MCD MinCAD 7 Drawing/Texture (Nemetschek North America Inc.)

MCD MathCaD Document (Mathsoft Engineering & Education Inc.)

MCF Public Browser Platform Configuration File (Myriad Communications Ltd)

MCF SignIQ Media Collection File (ImpulseLogic)

MCF Media Container Format

MCF TMPGEnc Conversion Template (Pegays Inc.)

MCF Sierra Mastercook Cookbook File

MCF Master Command File

MCF Meta Content Format File

MCF MathCAD Font (Mathsoft Engineering & Education Inc.)

MCF Hotsauce Graphics

MCH Xtra Cache File (Macromedia)

MCHT Multi-Channel Server (MCS) Component Policy Editor Chart Component (Volantis Systems Ltd.)

MCI Media Control Interface Command Set

MCIF MacroMolecular Crystallographic Information File

MCL MCell Cellular Automaton Ffile (Mirek Wojtowicz (Miroslaw Wójtowicz))

MCL MUSHclient World Information File

MCL Multimedia Manager Collection File

MCL VectorWorks Template (Nemetschek)

MCL Macro Command Language

MCL MultiEdit Macro Library

MCM Enable Macro

MCM MacMolecule File

MCO MSN Messenger Wink File (MSN)

MCP Master Compiler Profile

MCP MSN Content Plus Installer File Archive (MSN Content Plus Inc.)

MCP WaveZIP Lossless Compressed Audio

MCP NetMC Player Composed Media Multimedia File

MCP Metrowerks CodeWarrior Project

MCP MathCAD Printer Driver (Mathsoft Engineering & Education Inc.)

MCP MUSICompress Encoded Audio (Soundspace Audio LLC)

MCP Capsule Application Script

MCP Amiga MUI Preference Class/Library (SASG)

MCQ McAfee Quarantined File

MCR Generic CADD Macro

MCR CuteFTP Script (GlobalSCAPE)

MCR DataCAD Keyboard Macro File (DATACAD LLC)

MCR Freemagic Source Imageanalysis File

MCR PlaySaver and PSEmuPro Memory Card Save and Single Game Save

MCR HFS Medicare Auditor Medicare Cost Report (Health Financial Systems)

MCR Macro Magic Macro (iolo technologies, LLC.)

MCR Perfect Keyboard Macro (Pitrinec Software)

MCS VirusScan TC Installation File (Network Associates)

MCS Mimics Project File (Materialise NV)

MCS MathCAD Format File (Mathsoft Engineering & Education Inc.)

MCS HalfLife MapCycle - Editor

MCT Musicator

MCT MSN Messenger Packaged Wink File (MSN)

MCT MapChart Genetic Map Data (Plant Research International)

MCW MacWrite II Macintosh Text File

MCW Word for Macintosh Document (Microsoft)

MCX Intel Connection Fax File

MCX Mastercook File (Sierra)

MCX MacroX Macro File (Millsoft Software Development)

MC_ Musicato Compressed File

MD Chaos Desktop Metadata File (Chaos systems AB)

MD Teknical eLearning Objects Meta-Data File (Teknical Ltd.)

MD Technics Keyboard User MIDI Settings File

MD MDCD Compressed Archive File

MD1 Gear CD Suite File

MD2 Quake 2 Player Model

MD3 Quake III Arena Model File (ID Software)

MD5 MD5summer Checksum

MD5 IsoBuster MD5 Checksum (Smart Projects)

MD5 Checksum File for .SHN Audio

MD5 fsum MD5 Checksum File (SlavaSoft Inc.)

MD8 Mediator Project (MatchWare)

MD8 CDrom Database File

MDA Meridian Data Slingshot

MDA Access 2 Workgroup (Microsoft)

MDA MicroDesign Area File (Creative Technology)

MDA Access Add-in (Microsoft)

MDB Mediator Multimedia Data

MDB PTC Pro/MECHANICA File

MDB Access Application (Microsoft)

MDB ProWORX Nxt Memory Data (Schneider Electric)

MDB MS File Viewer

MDB Access Database (Microsoft)

MDC PowerPlay Power Cube (Cognos Incorporated)

MDC MedDC Mail Pouch (Asier Technology Corporation)

MDE Office File (Microsoft)

MDE Tonline Database File

MDE Access MDE Database File (Microsoft)

MDF I-deas Master Drafting Machine Data File

MDF Star Trek Armada Map File Title & Image Information

MDF Insight II Molecular Data File (Accelrys Software Inc.)

MDF Menu Definition File

MDF SQL Server Master Database File (Microsoft Corporation)

MDF ProWORX Nxt Memory Data (Schneider Electric)

MDF Alcohol 120% CD Image File (Alcohol Software)

MDF Capture Classic Filler (Accelio)

MDHTML Access HTML File (Microsoft)

MDI Borland Multiple Document Interface (Borland Software Corporation)

MDI Office Document Imaging File (Microsoft Corporation)

MDI MIDI-sequention Sound

MDK Schedule File (Ad Astra)

MDL Half-life Model

MDL Digitrakker Music Module

MDL ASTi Model Builder

MDL MapShots Software

MDL Animation:Master 3D Model (Hash)

MDL 3D GameStudio Model Entity (Conitec Corporation)

MDL RapidForm Proprietary Format (INUS Technology, Inc.)

MDL Moray Wireframe Model (SoftTronics)

MDL Symbian OS MIME Type Library

MDL 3D Design Plus Model

MDL Rational Rose Object Design Model (IBM)

MDL CA-Compete! Spreadsheet

MDL Simulink Simulation Model

MDL Steam Source SDK Model Content File (Valve Corporation)

MDL Flight Simulator 3D Model File (Microsoft)

MDL Quake Model File

MDL Mighty Draw DOS Library (theliquidateher Software, An MCS Investments, Inc. Company)

MDM Telix Modem Definition

MDM Mario Dash Map File

MDMP WinXP Trouble Report (Microsoft Corporation)

MDN Access Blank Database Template (Microsoft)

MDO Internet Information Server Configuration Backup (Microsoft)

MDP Visual C++ MAK File and Visual J++ Project Workspace (Microsoft)

MDP MicroDesign Page File (Creative Technology)

MDP Developer Studio Project (Microsoft)

MDP Visual Studio .NET Project Converter (VC 4.x) (Microsoft)

MDPR Multi-Channel Server (MCS) Device Policy Editor Device Profile Repository (Volantis Systems Ltd.)

MDR ZX Spectrum Emulator Microdrive File

MDR FaxTalk Modem Doctor Modem Report File

MDS SeeYou Raster Map (Naviter)

MDS Directx Mid2stream File

MDS Media Descriptor CD Image File

MDT Access Add-in Data (Microsoft)

MDT Ilink Incremental Linker Data Table (Microsoft)

MDV M1 Pattern File (H. Stoll GmbH & Co.)

MDV QLAY MDV Image

MDW Access Workgroup Information (Microsoft)

MDX Borland Database Engine Index (Borland Software Corporation)

MDX Label Pro Re-Index (Avery)

MDX Rational XDE Model (IBM)

MDX dBASE IV Multiple Index

MDX MidiEx MIDI System Exclusive Dump

MDYV Multi-Channel Server (MCS) Component Policy Editor Dynamic Visual Component (Volantis Systems Ltd.)

MDZ Access Wizard Template (Microsoft)

MDZ Protracker/Module File

MDZ Cubic Player/Cross-View Music Module Description

MD_ Visc15 Adressen Setup File

ME MultiEdit Configuration

ME Information

ME Formatted Manual Page with ME Macros

ME1 Zortech 21 Sample Winexam File

ME3 Multimedia Email Message (ArcSoft, Inc.)

MEA Meazure File

MEB WordPerfect Macro Editor Bottom Overflow File (Corel Corporation)

MEC Maximus MECCA Source

MED WordPerfect Macro Editor Delete Save (Corel Corporation)

MED Medline Document

MED Amiga MED/OctaMED Tracker Module Sound File

MED A2B Player Purchase (DigitalPhono.com)

MEDLINE Medline Document

MEF Jaws PDF Server Exported Settings (Global Graphics Software Ltd.)

MEFP ExerciseRT Sample Data Record (Morgan Medical Ltd.)

MEFS ExerciseRT Secondary Data Record (Morgan Medical Ltd.)

MEG MEG 101 B Database File (MEGBase)

MEK Gearhead Garage Game File (Mekada)

MEL Ericsson Phone Melody

MEL Maya Embedded Language Script (Alias Systems, a division of Silicon Graphics Limited)

MELL Mellel Document (RedleX)

MEM Clarion DOS Database Memo File (SoftVelocity)

MEM Medlin Accounting Additional Vendor Data (Medlin Accounting)

MEM Memory File of Variables

MEM FoxPro Memory Variable Save File (Microsoft)

MEM Context4 File

MEM BPM Studio Saved Files for Sampler Functions (ALCATech)

MEM WordPerfect Macro Editor Macro (Corel Corporation)

MEM Mio Technology Mio Object (Mioplanet Technologies, Inc.)

MEMB Pro/ENGINEER Temporary File (PTC)

MEN Menu

MEN Geometry II Plus Utility (Cabrilog)

MEP Inor MePro Software File

MEQ WordPerfect Macro Editor Print Queue (Corel Corporation)

MER WordPerfect Macro Editor Resident Area (Corel Corporation)

MER Data Interchange Format

MES WordPerfect Macro Editor Work Space (Corel Corporation)

MES Message File

MES A2B Player File (DigitalPhono.com)

MESA Opengl Glut-3.6 File

MET eMule Cached Information (eMule Team)

MET eDonkey Cached Information (MetaMachine)

MET OmniPage Document (ScanSoft, Inc.)

MET ActiveSky Export File (HiFi Simulation Software)

MET OS/2 PM Meta File

MET Presentation Manager Meta File

MET WordPerfect Macro Editor Top Overflow File (Corel Corporation)

METHODS Likely a Text File

MEU DOS Shell Menus

MEX Macro Express Macro (Insight Software Solutions)

MEX MATLAB Executable Command (The MathWorks, Inc.)

MEX MATLAB Macintosh Dynamically Linked Subroutines (The MathWorks, Inc.)

MEX mexReader Multimedia File

MEX WordPerfect Macro Editor Expound File (Corel Corporation)

MEX4 MATLAB Sun-4/SPARC Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXDS MATLAB DECStation Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXHP3 MATLAB HP9000/Series 300 Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXHP7 MATLAB HP9000/Series 700 Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXN MATLAB NeXT Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXRS6 MATLAB IBM RS/6000 Dynamically Linked Subroutines (The MathWorks, Inc.)

MEXSG MATLAB SGI Dynamically Linked Subroutines (The MathWorks, Inc.)

MEZ RealArcade Game Information

MF Manifest Graphic

MF MetaFont Text File

MF FrameMaker MakerFile (Adobe)

MF MoonFish Track File (Bram Bos)

MF Java Manifest (Sun Microsystems, Inc.)

MF2 Authorware Mediator5 Multimedia File (Adobe Systems Incorporated)

MFA Site Server 3.0 Report Definition (Microsoft)

MFASL Mozilla (Netscape) XUL FastLoad File (Mozilla.org)

MFC Mankind File

MFD F1RC Relay Game Code File

MFD ABC Programming Language Monadic Function

MFD Adobe Multiple Master Font Metrics Directory File (Adobe)

MFD Multiframe Structural Frame Model (Formation Design Systems Pty Ltd)

MFF MIDI File Format

MFG MediaForge Runtime Player Distribution Project (XMLAuthor, Inc.)

MFI Win98rk File

MFJ MetaFont Job Batch Input

MFK Mafuka Audio

MFL Mozilla (Netscape) XUL FastLoad File (Mozilla)

MFM DMP Music Format

MFM mTropolis mPire Interactive Multimedia Title (Quark)

MFM VTeX Multiple Master Font Metrics

MFMOD Mobile Forces Game MOD (Rage Software)

MFT MetaFont Source Formatter Style File

MFW mTropolis mPire Interactive Multimedia Title (Quark)

MFX mTropolis mPire Interactive Multimedia Title (Quark)

MG Modula-3 Generic Module Source

MG1 MusiGenesis Project File (Kenneth Adams)

MGA Migrys IMR Call Flow (Migrys Innovations)

MGC Equation Editor File (MGCSoft)

MGC Clipart Collection Catalog (Microsoft)

MGCF MagicInstall Compressed File

MGD Master Grade Gradebook

MGF DataModeler XML Schema Project Data (URL Integration, Inc.)

MGF Materials and Geometry Format File

MGF Micrografx Font

MGF Image File

MGK ImageMagick Ver. 5.3.2 Coders File (ImageMagick Studio LLC)

MGL MosASCII Graphics Library

MGL Age of Kings (Microsoft)

MGM MGCSoft Equation Editor Macro File

MGMAP Ygnius MindGenius Mind Map (Ygnius)

MGR MGR Bitmap

MGRP Multi-Channel Server (MCS) Component Policy Editor Asset Group (Volantis Systems Ltd.)

MGS Intelligence Tracking System File

MGTPL Ygnius MindGenius Template (Ygnius)

MGU Band-in-a-Box MIDI File

MGX Micrografx Picture Publisher Clipart

MGX Rise of Nations Saved Game (Microsoft)

MGZ Metal Gear Solid Archive

MH Graphic File

MHF Maestro ERP Hot Fix (Maestro Technologies Inc.)

MHG Multimedia File

MHK Riven Movie Data File

MHK Broderbund Mohawk Archive

MHP Home Publishing Project (Microsoft)

MHT MHTML Document (Microsoft Corporation)

MHTM MHTML Document (Microsoft)

MHTML MHTML Document (Microsoft)

MI Winamp3 MAKI Scripting Library

MI Miscellaneous

MI CoCreate CAD File

MI4 HDD 100/120 Audio Jukebox Firmware File (Koninklijke Philips Electronics N.V.)

MIA Babya bMix/Logic Music Project File (Babya Software Group)

MIA MusicIndiaOnline Trident Player Music File (MusicIndiaOnLine)

MIB Management Information Base File

MIB SNMP MIB File

MIB MyInfo Topic File Backup (Milenix Software Ltd.)

MIC Image Composer File (Microsoft)

MID Musical Instrument Digital Interface MIDI-sequention Sound

MID MapInfo Interchange Format

MIDI Musical Instrument Digital Interface MIDI-sequention Sound

MIF ImageMagick Machine Independent File Format Bitmap (ImageMagick Studio LLC)

MIF Systems Management Server (SMS) Management Information Format (Microsoft Corporation)

MIF Molecular Information Format

MIF MapInfo Interchange Format File

MIF EarthLink E-mail Message Index (EarthLink, Inc.)

MIF FrameMaker Interchange Format (Adobe)

MIF Watcom Make Script

MIF Software License Tracking Tool

MIF MIDI Instrument

MIF MicroHof .MIF Assembler File

MIF Management Information Format (Distributed Management Task Force, Inc.)

MIFF ImageMagick Machine Independent File Format Bitmap (ImageMagick Studio LLC)

MIG Mighty Draw Drawing (theliquidateher Software, An MCS Investments, Inc. Company)

MII PageWiz Image (Microtek)

MII MicroStat II Data File

MIL Micro Illustrator Uncompressed Graphic

MIL Group 4 Fax File

MILK MilkDrop Winamp Visualization Plug-in Preset File (Nullsoft, Inc.)

MIM Multi-Purpose Internet Mail Extensions (MIME) File

MIME Multi-Purpose Internet Mail Extensions (MIME) File

MIMG Multi-Channel Server (MCS) Component Policy Editor Image Component (Volantis Systems Ltd.)

MINGW Mingw Make File

MINGW32 Mingw Compiler File

MINI miniControl Data File (LucaNet)

MINIPSF Playstation Sound Format (Miniature Playstation Sound Format) (Sony Corporation of America)

MINIPSF2 Playstation 2 Sound Format (Miniature Playstation Sound Format) (Sony)

MIO MyInfo Topic File (Milenix Software)

MIO mexReader Multimedia File

MIO MIO Compressed Audio

MIO Mio Technology Generic Communications Format (Mioplanet Technologies, Inc.)

MIO Iphoto4 Programs Fio File

MIP Paint Shop Pro Multiple Image Print File (Corel Corporation)

MIP MODDE Project (Umetrics AB)

MIPSEL Mips File

MIR Bauhaus Mirage Project File (Bauhaus Software, Inc.)

MIS Delta Force Land Warrior Mission (NovaLogic, Inc.)

MIS Game Mission File

MIS Tom Clancey's Ghost Recon Mission File (Red Storm Entertainment)

MIS MagicInstall Installation Script

MIS 3WayPack Missing Data Pointers (The Three-Mode Company)

MIS Tribes 2 Game File (Sierra)

MISS Homeworld Missle Data (Sierra Entertainment, Inc.)

MITSU Mitsubishi S340-10 Color Sublimation Printer Bitmap (Mitsubishi Companies)

MIX Command & Conquer Picture/Sound File

MIX Don Knuth's MIX Emulator

MIX OzWin CompuServe E-mail/Forum Access Index File

MIX Picture It! Multilayer Picture File (Microsoft)

MIX Power C Object File

MIX PhotoDraw 2000 Multilayer Picture File (Microsoft)

MIX Techno eJay Music Mix File

MIX Project Dogwaffle Type 2 Mixing Palette (TheBest3D.com)

MIX Windows Sound MIX (Microsoft)

MIZ Winamp Compressed MIDI File

MJ MovieJack DVD Ripper File

MJB PDA Mystery Juke Box Generation Profile (Paul Duggan - PDAWare)

MJF Mjuice Secure Music Files

MJP Media Center Plug-in (J. River, Inc.)

MJP Media Jukebox

MJPG SMJPEG Video

MJR Media Jukebox Registration File (J. River)

MK Make File

MKA Matroska Audio Stream (Matroska Association)

MKD Malz++Kassner CAD5 Drawing

MKE Make File

MKG Make File

MKH WinMark Pro Mark File (Synrad, Inc.)

MKI Picture File

MKI MagView Japanese Makichan Format Graphic

MKI MediaKnife Animated Internet Picture

MKJ MKJamz

MKL Malz++Kassner CAD5 Drawing Library

MKL Créatoria

MKM Matroska Media File (Matroska Association)

MKR Train Simulator Marker File (Microsoft Corporation)

MKR McCullough Knowledge Explorer Knowledge Representation (Richard H. McCullough, Knowledge Engineer)

MKR Tonline Bsw4 Internet File

MKS Sierra Mastercook Cookbook File

MKS Matroska Subtitles Stream (Matroska Association)

MKS Tact Data

MKV Matroska Video Stream (Matroska Association)

MKW Compressed Audio File (Michael K. Weise)

MKZ PokerOffice Backed Up Database (PokerOffice.com)

ML ML language Source Code File

ML Camomile Configuration/Module File

ML0 Multiledger Company Name (CheckMark Software)

ML2 Tripos MOL2 Molecule File

ML3 Milestones 3.x Schedule (KIDASA Software, Inc.)

ML4 Milestones ver 4.0 and 4.5 Schedule (KIDASA Software, Inc.)

ML5 Milestones ver 5.0 and 5.01 Schedule (KIDASA Software, Inc.)

ML6 PowerPoint Milestone File (Microsoft)

ML6 Milestones Professional 2000 Schedule (KIDASA Software, Inc.)

ML7 Milestones Professional 2002 Schedule (KIDASA Software, Inc.)

ML8 Milestones Professional 2004 Schedule (KIDASA Software, Inc.)

ML9 Milestones Professional 2004U Schedule (KIDASA Software, Inc.)

MLA Milestones Professional 2006 Schedule (KIDASA Software, Inc.)

MLB Symphony Macro Library File

MLB FoxPro for Macintosh Library

MLB Peachtext List Manager (Peachtree Software (Sage Software SB, Inc.))

MLB MyLittleBase Database

MLB OpenVAX Macro Library

MLD Multilizer Dictionary

MLD Polyphonic Ringtone File for Phones

MLF UpdateEXPERT Machine List File (St. Bernard Software)

MLI AutoCAD Material-Library File (Autodesk, Inc.)

MLI 3D Studio Material-Library File (Autodesk, Inc.)

MLI Camomile Individual Module File

MLI Encyclopedia Media List

MLK Sierra Mastercook Look File

MLM Novel Groupwise E-mail File

MLN AutoCAD Multiline Definition (Autodesk, Inc.)

MLNK Multi-Channel Server (MCS) Component Policy Editor Link Component (Volantis Systems Ltd.)

MLP Meridian Lossless Packing Audio File (Meridian Audio)

MLS Miles Sound Tools Compressed DLS

MLS Milestones 1.x and 2.x Schedule and Simplicity (all ver) (KIDASA Software, Inc.)

MLT Forecast Pro Multivariate Forecast File (Business Forecast Systems, Inc.)

MLYT Multi-Channel Server (MCS) Layout Policy Editor Layout Policy (Volantis Systems Ltd.)

MM Lightscape Material Map

MM Multimate Advantage File

MM FreeMind Mind Map

MM Macro Mania Macro

MM Rise of Nations Campaign Media File (Microsoft)

MM Meme Virtual Reality World

MM3 Mortgage Minder Ver. 3 Saved Mortgage Configuration File (CW Technical Services)

MM4 Mortgage Minder Ver. 4 Saved Mortgage Configuration File (CW Technical Services)

MM5 Makromat Macroeconomic Model Data (University of Muenster, Germany)

MMA Master Album Maker Album File (Intrepid Mouse Limited)

MMA Grlib Cppima Scilimag File

MMAP MindManager Brainstorm and Process Control Map (Mindjet)

MMB MultiMedia Builder

MMB Oracle Forms Menu Binary Source Code

MMBK MannaBook (MannaBook Software, Inc.)

MMBM MannaBook (MannaBook Software, Inc.)

MMC Office Media Content

MMC Clipart DLLbackup Autoshape File (Microsoft)

MMC Media Catalog

MMD DocsAlive Multimedia Document (Softedge-Systems Ltd)

MMD Media Processing Server Studio Data (Nortel Networks)

MMD MacroModel Molecular Mechanics File (Columbia University Chemistry)

MMD MangoData Multi-User Database (MightyMango)

MMD Nigarva Downloader Download List File (K&A Corporation)

MMD Summit Membership Manager Database (MIE Software Pty Ltd)

MME Multi-Purpose Internet Mail Extensions (MIME) File

MMF Media Processing Server Studio Reference Name (Nortel Networks)

MMF Meal Master Format

MMF McAfee VirusScan Configuration (Networks Associates Technology, Inc.)

MMF AppMind Message Management File (Appmind Software AB)

MMF Yamaha SMAF Synthetic Music Mobile Application Format (Yamaha Corporation)

MMF Mail File (Microsoft)

MMG mkvmerge GUI Saved Muxing Settings (Moritz Bunkus)

MMH MS Media Manager Helper DLL

MMI Memo Open Client

MMI Media Processing Server Studio Index (Nortel Networks)

MMJB_MIME MusicMatch Jukebox MIME ID File (MUSICMATCH, Inc.)

MML Aleph One Marathon Markup Language (Marathon Open Source)

MML MathML Math Embedded HTML File

MML MolMol Molecule Description File

MML MySoftware or ProVenture MailList Program Mail List (Elibrium, LLC)

MML Mail Meta Language

MML FrameMaker (Adobe)

MMLD EdGCM Data File (The EdGCM Cooperative Project of Columbia University)

MMM MacroMind Directory RIFF/RMMP Format Movie

MMM Multimedia Movie (Microsoft)

MMM Multiple Master Font File (Adobe)

MMO RapidFile Memo Writer

MMO Musicmatch On Demand Playlist (Musicmatch, Inc.)

MMOD MacroModel Molecular Mechanics File (Columbia University Chemistry)

MMP Bravado Board Video Output Format

MMP CoCo Systems VisiMap

MMP Master Album Maker Album Project File (Intrepid Mouse Limited)

MMP EPOC Makmake Makefile Project

MMP Multimedia Player Movie Clip

MMP MindManager Map File (Mindjet)

MMP MixMeister Playlist (MixMeister Technology)

MMP MS Music Producer

MMP Gammadyne Mailer Project File

MMP Bravado Board Output Video Format

MMPBT MindManager Branch Template File

MMPT MindManager Template

MMR LOKI Character Template (Synthetic Realms)

MMS Miles Sound Tools

MMS JPEG-6b File

MMS NT MidiMagic Song Information (NovaTech Design)

MMSCRIPT MindManager Script File

MMT egseing Memory Dump Data

MMT CoCo Systems VisiMap

MMT Nimbus 7 SAMS Data File

MMV Sony MovieShaker File

MMW Multimedia World Magazine

MMW Media Content

MMW AceMoney Financial Data (MechCAD Software LLC)

MMX Command & Conquer Red Alert 2 Map File

MMX MarkMagic Import/Export

MMX Oracle Forms Compiled Menu

MMZ MusicMatch Theme File (MUSICMATCH, Inc.)

MN1 Money Ver 1 Data File (Microsoft)

MN2 Descent2 Mission File

MN2 Money Ver 2 Data File (Microsoft)

MN3 Descent3 Mission File

MN3 Money Ver 3 Data File (Microsoft)

MN3 Descent 3

MN4 Money Database (Microsoft)

MN4 Money Ver 4 Data File (Microsoft)

MN5 Money Ver 5 Data File (Microsoft)

MN6 Money Ver 6 Data File (Microsoft)

MN7 Money Ver 7 Data File (Microsoft)

MN8 Money Ver 8 Data File (Microsoft)

MN9 Money Ver 9 Data File (Microsoft)

MNB MuPAD File

MNC My Notes Center File

MNC AutoCAD Compiled Menu (Autodesk, Inc.)

MND MusicNet Music Download (MusicNet)

MND Cerious Mandelbrot Image

MND MNI Mandelbrot for Windows

MND Fractal Forge Ver. 2.x Fractal Parameters

MND AutoCAD Menu Program (Autodesk, Inc.)

MNF Saved MSN Search

MNG DeLorme Map'n'Go Map

MNG Keyboard File Manager MIDI/MID Files Floppy Database (Yahama)

MNG Animation Shop Animation (Corel Corporation)

MNG Multi-image Network Graphic Animation

MNI Cerious Mandelbrot Image

MNL Zortech 3 Binary File

MNL AutoCAD AutoLISP Functions Related to Menu (Autodesk, Inc.)

MNO Monopoly Saved Game

MNO Macromedia Design Notes

MNR IBM Voice Type Language Newuser File

MNR AutoCAD Compiled Menu (Autodesk, Inc.)

MNS AutoCAD ASCII Menu (Autodesk, Inc.)

MNT Foxpro Menu Memo (Microsoft)

MNU AutoCAD Menu Template (Autodesk, Inc.)

MNU HP NewWave Advanced Macro

MNU FoxPro Menu

MNU Menu File

MNW Menu File

MNX Foxpro Menu (Microsoft)

MNX AutoCAD Compiled Menu (Autodesk, Inc.)

MNY Money Data File (Microsoft Corporation)

MO Dymola Simulation

MO GNU Gettext Machine Object File (Free Software Foundation)

MO Modula-3 Object File

MO1 Odyssey Disk/ROM Image

MO3 MO3 MOD Audio Format (un4seen developments)

MOB Master of Orion 3

MOB Device Definitions

MOBAPP MOBILedit! Application (COMPELSON Laboratories)

MOBDRV MOBILedit! Driver (COMPELSON Laboratories)

MOBSKIN MOBILedit! Skin (COMPELSON Laboratories)

MOC MOCHA Javascript

MOCHA MOCHA Javascript

MOD ProModel Optimization Software Suite Model

MOD Music Module

MOD Music File

MOD Multiplan Spreadsheet

MOD Multiplan Spreadsheet (Microsoft)

MOD Monarch File

MOD Module

MOD Modula-2 Program File

MOD Model File

MOD File Implementing DOS Support for Windows DLL's

MOD EPOC Model Definition

MOD Windows Kernel Module

MOD Peachtext Database (Peachtree Software (Sage Software SB, Inc.))

MOD Amiga and PC Tracker Module

MOD CATIA Export File (Dassault Systèmes)

MOD Clarion for Modula-2 Source Code File (SoftVelocity)

MOD Connectivity Memory Model Cell Specific Plasticity Functions on Incoming Synapses Input File

MOD Digital Music Sound Clip

MODEL PlantWALK Model

MODEL LEGO CAD Model File (The LEGO Group)

MODEL Ribbons Molecular Model

MODEL CATIA Model (Dassault Systèmes)

MOF MSinfo (Microsoft)

MOF Systems Management Server (SMS) Managed Object Format (Microsoft Corporation)

MOI French Text File

MOL MOdule (play)List

MOL Easy Palette Object Library

MOL MDL Molfile Molecule File (MDL Information Systems, Inc.)

MOL2 WebLab Molecular Viewer File

MOL2 Portable Representation of a SYBYL Molecule

MOM CDrom Runtime Database File

MOM SPEFO Stellar Spectra Analysis File

MOM Xcode Compiled Core Data-based Data Model (Apple Computer, Inc.)

MON Firefox Bookmark Backup File

MON Virgin Games Monopoly Deluxe

MON ReadMail Monitor

MONO Monolith Munged Encoded File

MONO Bi-level Bitmap in Least-Significant-Byte First Order

MONTE CRiSP Harvest File

MOO QuickTime Movie Clip (Apple Computer, Inc.)

MOO MoonRock Language Source Code File

MOOV QuickTime Movie (Apple Computer, Inc.)

MOP M.Fujimiya's Morpher for Windows 1.4 Work File

MOP NS/Elite Display 3.12 Macro Object Path File

MOP Mopac Input File

MOP MDL Molfile MOPAC Input Format (MDL Information Systems, Inc.)

MOR Corel Shared Writing Tools 9.0 File

MOR Poser 3D Morph Target File

MOS System DOS 6.2 File

MOS Infinity Game Engine Compressed Background and GUI Tile Info (BioWare Corp.)

MOS MACAOS Compressed Tranismission File (Elprint AS)

MOS Infinity Game Engine Background and GUI Tile Info (BioWare Corp.)

MOS Dymola Simulation

MOT Linux Load Instructions

MOT Phoneme Translation File

MOT Sharp cellphone GX Flash File (Sharp)

MOTIF Microangelo Motif

MOV AutoCAD AutoFlix Movie (Autodesk, Inc.)

MOV QuickTime Video Clip (Apple Computer, Inc.)

MOVERADDIN Mover Add-in (Nicodemous Bytes)

MOVERBACKUP Mover Backup Set (Nicodemous Bytes)

MOVERCONFIG Mover Configuration (Nicodemous Bytes)

MOVERDB Mover Database (Nicodemous Bytes)

MOVERREG Mover Registration Info (Nicodemous Bytes)

MOVERTEMPLATE Mover Template (Nicodemous Bytes)

MOVIE QuickTime Movie (Apple Computer, Inc.)

MOX Extend Simulation Model File

MOZ Netscape Temp File

MP Maya Personal Learning Edition (Alias Systems, a division of Silicon Graphics Limited)

MP Multiplan File

MP EARS Component File

MP cGPSmapper Polski Format Mapy -- Polish Map Format (Stanislaw Kozicki)

MP Monochrome Picture TIFF Bitmap

MP+ MPEG Plus Audio File

MP1 MPEG Audio Stream, Layer I

MP2 MPEG Audio Stream, Layer II

MP2 Masterpoint Red Points File (ABF Masterpoint Centre)

MP2S MPEG-2 Video

MP2S Max Payne 2 Saved Game (Rockstar Games)

MP2V MPEG Audio Stream, Layer II

MP3 SHARP MZ-series Emulator File

MP3 Masterpoint Green Points File (ABF Masterpoint Centre)

MP3 Wrapster Wrapped File

MP3 MPEG Audio Stream, Layer III

MP3 mp3PRO Audio File

MP3 AlbumWrap Wrapped Music File Archive (Infamus Software LLC)

MP3PRO mp3PRO Enhanced MP3 File

MP4 MPEG-4 Video File

MP4V MPEG-4 Video File

MP5 Masterpoint Red and Green Points File (ABF Masterpoint Centre)

MP5 Maple V Release 3 Windows/DOS File (Maplesoft, a Division of Waterloo Maple Inc.)

MPA E-Designer (Beijer Electronics)

MPA Palm Memo File

MPA MPEG Audio Stream, Layer I, II or III

MPB TruVideo Video-only MPB Stream

MPB Maintenance Parts Bin Database (Nhuntsoftware)

MPC Project Calender (Microsoft Corporation)

MPC VersaPro Compiled Motion Block

MPC Collectorz.com MP3 Collector MP3 Collection Data (Collectorz.com)

MPC Musepack Audio File

MPCB ReliaSoft MPC 3

MPCF MarketPlace Pro Configuration Settings (Claritas)

MPD Windows Mini-port Driver

MPD Project Database File (Microsoft)

MPD MLCad LDraw Multipart Model File (LM-Software)

MPD SCSI MiniPort Driver (Microsoft)

MPD File List Creator MP3 Playlist (WenSoftware)

MPD ABC Programming Language Monadic Predicate

MPD My Digital Photos Filmstrip (Super Win Software)

MPDEX MPdex MP3 Database Utility

MPE MPEG Movie Clip

MPE.EXE MP3 Digital Player Wrapper

MPEG MPEG 1 System Stream

MPF MPF Audio File (Mobijet Science & Technology Co., Ltd.)

MPF MosASCII Project Workspace File

MPF Design Gallery (Microsoft)

MPF MainActor Project (MainConcept AG)

MPG MPEG Animation

MPG Salt Lake City Game Movies File

MPG MPEG 1 System Stream

MPG ProgDVBR MPEG2 Video File

MPG4 MPEG-4 Media File

MPGA Mpeg-1 Layer3 Audio Stream

MPH Photoline4 Morphing File

MPH Publisher (Microsoft)

MPI MPlayer Control File

MPI Links98 Golf Game File

MPJ MINITAB Project File (Minitab Inc.)

MPJ Mountain Video Editing File

MPJ Sometimes .MP3 File

MPJ RoboHTML Project

MPJ STOIK Morph Man Project Information File

MPK Augmented Microsoft-Project (Microsoft)

MPKG Meta Package File

MPM Max Payne MOD Archive (Rockstar Games)

MPM MPEG Movie

MPM WordPerfect MathPlan Macro (Corel Corporation)

MPN mophun Game File (morphun)

MPNT MacPaint Bitmap File

MPO Augmented Microsoft-Project (Microsoft)

MPO Sheffield Dictionary File

MPP BX-24 Basic Express Compiler Map

MPP CAD Drawing File

MPP Zortech 3 README File

MPP Project Project (Microsoft Corporation)

MPP Musepack Audio File

MPQ Blizzard Game Data File (Blizzard Entertainment)

MPR FileMaker Spelling Dictionary

MPR Visual Foxpro Solution Menus File (Microsoft)

MPR Westwood Studios Game File

MPR Music Publisher Backup Data File (Braeburn Software)

MPR AutoCAD Mass Properties Report (Autodesk, Inc.)

MPR Multilizer Project File (Multilizer, Inc.)

MPS Max Payne Saved Game (Rockstar Games)

MPS Pocket Streets Map File (Microsoft Corporation)

MPS MPEG-1 Audio and Video File

MPS Multimedia File

MPS Casio PDL Pocket Streets Map

MPS MapSource GPS Mapping Interface Waypoints (Garmin Ltd.)

MPS MySweetNix!

MPT Multipage TIFF Bitmap

MPT Project Template File (Microsoft Corporation)

MPV MPEG-1 Video File

MPV MyPhotoZip File

MPV Project View (Microsoft Corporation)

MPV2 MPEG Audio Stream, Layer II

MPW MosASCII Project Workspace File

MPW Oc2.316s Cakit File

MPX Foxpro Compiler Menu (Microsoft)

MPX BX-24 Basic Express Compiler Map

MPX Alpha Five Temporary Index Information (Alpha Software, Inc.)

MPX RCA/Lyra Handheld MP3 Player File (RCA)

MPX Project Export File (Microsoft Corporation)

MPY RCA/Lyra Handheld MP3 Player File (RCA)

MPZ SoundSlimmer Compressed Audio (Sound Genetics Inc.)

MPZ MyPhotoZip File

MPZ Moove Resource Description File (moove Corporation)

MPZ SignIQ Project (ImpulseLogic)

MQC CP/M Disk Drive Information File

MQD Malete Query Data (OpenIsis)

MQL MetaTrader Indicator File (MetaQuotes Software Corp.)

MQP Multiquence Project

MQV Sony Movie Player Format (Sony Corporation of America)

MQX Malete Query Access File (OpenIsis)

MRA VilagRadio Recorded Radio Program (MAVIP Ltd)

MRB C++ Multiple Resolution Bitmap Graphic

MRC Bibliographic Data Format

MRC MIRC Script File

MRD Infinity Document (MathRevolt)

MRD Malete Record Data File (OpenIsis)

MRES Homeworld (Sierra Entertainment, Inc.)

MRF GPS Pathfinder Office Geoid Grid File (Trinble Navigation Limited)

MRF WinMorph Project Information File

MRF Morpheus Saved Game

MRF Grade Busters Teacher Tools File

MRF Marks Russel File

MRF Macintosh Font

MRF MultiEx Commander Resource File (XeNTaX)

MRF MeterReading Data (Dataconomy)

MRG Merge File

MRG DESQview (Symantec)

MRI MRI Scan

MRK Informative Graphics Markup File

MRK SleepScan and Ceegraph Stores Technician (User) Comments (Bio-logic Systems Corp.)

MRK TAPCIS Marked Messsage Commands

MRK MissionRisk

MRK CSI Markup File

MRK Windows 95 User Benchmark

MRLV Multi-Channel Server (MCS) Component Policy Editor Rollover Image Component (Volantis Systems Ltd.)

MRO SharpEye Music Reader File

MRP Infinity Solution Plot (MathRevolt)

MRS WordPerfect Macro Resource File (Corel Corporation)

MRW Minolta Diamage Raw Image File (Minolta)

MRX Malete Record Access File (OpenIsis)

MS Checksum File for Anti-Virus

MS Modula-3 Intermediate Assembly File

MS Maple Worksheet

MS Formatted Manual Page with MS Macros

MS1 OzWin CompuServe E-mail/Forum Access Message File

MS3D MilkShape 3D Model

MSA Atari MSA Disk Image (Atari)

MSA Magic Shadow Archive

MSBCM Business Contact Manager Backup Database (Microsoft Corporation)

MSC Microsoft Management Console Snap-in Control File (Microsoft Corporation)

MSC CRiSP Harvest File

MSC eYaMosaic Graphic Mosaic (ESRI China (Beijing))

MSC C Makefile

MSCR Multi-Channel Server (MCS) Component Policy Editor Script Component (Volantis Systems Ltd.)

MSD Advanced Key and Mouse Recorder Macro (GrassSoftware)

MSD [Unknown]

MSD Maxsurf Design File (Formation Design Systems Pty Ltd.)

MSD Multimedia Studio Document (Burton Software)

MSD Diagnostic Utility Report (Microsoft)

MSD Macro eXpert Macro (GrassSoftware)

MSDEV Msvc Make File

MSDL Manchester Scene Description Language

MSE Bwsb120a Demo File

MSF Multiple Sequence File

MSF Thunderbird Mail Summary File (Mozilla Corporation)

MSF EarthLink E-mail Message File (EarthLink, Inc.)

MSF Netscape Mail Mail Summary File (Netscape)

MSG TAPCIS Captured Messages

MSG FoxPro FoxDoc Message

MSG Exchange Mail Message (Microsoft Corporation)

MSG OzWin CompuServe E-mail/Forum Access Message File

MSG OS/2 Help Message File (IBM)

MSG Pegasus Mail Stored Messages To Be Sent (David Harris)

MSG Program Message

MSH Orbiter Mesh File (Martin Schweiger)

MSH FLUENT Mesh (Fluent Incorporated)

MSH MASH

MSI Cerius2 (Accelrys Software Inc.)

MSI Windows Installer File (Microsoft Corporation)

MSK Paint Shop Pro Mask File (Corel Corporation)

MSK Animator Mask Format (Autodesk, Inc.)

MSK BMC Software Patrol Icon File

MSK CARA-Script-Interpreter-Engine Mask

MSL MAINSAIL Source Code (XIDAK, Inc.)

MSL ProWORX Nxt MSL Loadables (Schneider Electric)

MSL ImageMagick Scripting Language File (ImageMagick Studio LLC)

MSM MultiSIM Circuit Diagram

MSM Windows Installer Merge Module (Microsoft)

MSN Microsoft Network MSN Central (Microsoft)

MSN MSN Content Plus Installer File (MSN Content Plus Inc.)

MSN Network Document

MSN Descent Mission File

MSN Microsoft Network Document (Microsoft)

MSNBAK MSN Mail Backup File (Microsoft)

MSO MedlySound Sound/Module

MSO Math Script Object File

MSO FrontPage File (Microsoft)

MSO Word OLE Web Page Storage Stream (Microsoft Corporation)

MSO Orgchart File (Microsoft)

MSP Technics Sx KN 6000 Keyboard Performance Pads File

MSP Magix Music Studio File

MSP Paint Bitmap (Microsoft)

MSP Windows Installer Patch

MSP Technics Sx KN 5000 Keyboard Manual Sequence Pads File

MSPLG Modem Spy Plug-in File (SoftCab Inc.)

MSPX XML-based Web Page (Microsoft)

MSQ MIDI File

MSR OzWin CompuServe E-mail/Forum Access SYSOP File

MSRCINCIDENT Remote Assistance Request (Microsoft)

MSS Manuscript Text File

MSS Miles XMIDI Sequence with DLS Data

MSS Game Score

MSSTYLES Windows XP Visual Style (Microsoft)

MSSYTLES Windows Visual Style File

MST Windows SDK Setup Transform Script (Microsoft Corporation)

MST ChemFinder Chemical Structure Index

MST Pension System Master File (DATAIR Employee Benefit Systems, Inc.)

MST Room Arranger Design File (Jan Adamec)

MST Presentation Master Presentation Document (Corel)

MST Minispecification

MST Visual Test Source File

MSV MyStars! Saved View (Relative Data, Inc.)

MSV Memory Stick Compressed Voice File (Sony)

MSVC Msvc Make File

MSW Word Text File (Microsoft)

MSWMM Windows Movie Maker Project (Microsoft)

MSX Image Format

MSX Age of Empires II: The Conquerors Expansion Multi-player Saved Game (Microsoft)

MSX Compressed CP/M File Archive

MSX SuperGraphic Studio Message File (Time-O-Matic, Inc.)

MSX Magic Splitter Split File Rebuild Information (Kynosoft, Brescia)

MSZ MiSZle Data/Parameter File (Mystic Fractal)

MS_ Winhelp Compressed File

MT2 MadTracker File

MTA Flight Simulator Maintenance File (Microsoft)

MTB MINITAB Exec File

MTD Digital Sheet Music

MTE MadTracker Envelope File

MTE TargetExpress Target (MCW Technologies Inc.)

MTF Darkstone Archive

MTF Mathe Vektor MTF File

MTF MicroSurfer File

MTG? Jay Klein Making the Grade Teacher Gradebook Program

MTGA Homeworld (Sierra Entertainment, Inc.)

MTH Derive Math File

MTHM Multi-Channel Server (MCS) Theme Policy Editor Theme Policy (Volantis Systems Ltd.)

MTI MadTracker Instrument File

MTI Musitron MUSILI.ZIT Compressed File

MTK MPU-401 Trakker

MTK Matrikon Software License File

MTL Mastercam Mill Tool Library (CNC Software, Inc.)

MTL MathLook File

MTL Wavefront

MTM MultiTracker Music Module

MTP MadTracker Pattern File

MTP L&H Power Translator Pro

MTR RealFlight Radio Control Airplane Description (Knife Edge Software)

MTS Encore Samples File

MTS MadTracker Sample File

MTS Viewpoint iPix File

MTT Messenger Saved Contact File (Microsoft)

MTV MTV Ray-tracer

MTV MTV Music Generator

MTW TRADOS MultiTerm Termbase

MTW Minitab Data File

MTX GROMACS: Molecular Dynamics Hessian Matrix Format

MTX Anjal2000 Tamil Text File Format Description

MTX Marked Text Source File

MTX M-Tx Music-From-Text Translator Source File

MTX MadTracker Extension File

MTX Temporary File often used by a Browser or TWAIN Device

MTX File WSOCK32.MTX Associated with MTX Worm

MTX Matrix Spreadsheet (Grove Business Software)

MTX Adobe Atmosphere File (Adobe)

MTX Viewpoint iPix File

MTXDEF Gestionnaire d'extensions Multiple Extension Definition (Définition d'extension multiple) (Francis Gagné)

MTXT Multi-Channel Server (MCS) Component Policy Editor Text Component (Volantis Systems Ltd.)

MT_ Encore Compressed Audio File

MU Quattro Menu (Corel)

MUC Collectorz.com Music Collector Collection Data (Collectorz.com)

MUD zMUD Settings File (Zugg Software)

MUD ACT! (Best Software CRM Division)

MUF Alpha Five Temporary Access Control File (Alpha Software, Inc.)

MUF ProtoMuck Multi User Forth Program

MUI Opengl Glut-3.6 File

MUI Configuration Resource File (Microsoft)

MUI Amiga MUI Default Class/Library (SASG)

MUL Ultima Online Game

MUL SeeYou Flight Data (Naviter)

MUP Music Publisher Data File (Braeburn Software)

MUS Harmony Assistant, Melody Assistant, Myriad Music plug-in, Melody Player Music File (MYRIAD)

MUS MusicTime/Doom Sound

MUS Music

MUS Infinity Game Engine Music Control File (BioWare Corp.)

MUS Finale Music Score (MakeMusic!)

MUZ Hover Game MIDI File

MV Miva Script (Prior to Ver. 4.14) (Miva Corp.)

MV IRIX makemovie Command Compressed Movie (Silicon Graphics, Inc.)

MV3 Oozic 3D MusicVideo

MV3 AUPEC Audio File

MVA Setup Program Archive

MVA Matrox Video Card Driver

MVB Database

MVB Manual Storage Format

MVB Multimedia Viewer (Microsoft)

MVC Miva Compiled Script (Ver. 4.14 and Later) (Miva Corp.)

MVC Collectorz.com Movie Collector Data File (Collectorz.com)

MVD MicroDVD DVD Movie

MVD MicroVision Database

MVE 4DVista Geological Model (Midland Valley Exploration)

MVE Infinity Game Engine (BioWare Corp.)

MVE muvee autoProducer Project File (muvee Technologies Pte. Ltd.)

MVE Interplay Video File

MVE Wing Commander III MVE Movie File Format

MVF AutoCAD Stop Frame File (Autodesk, Inc.)

MVF Movie Stop Frame File

MVG ImageMagick Vector Graphic (ImageMagick Studio LLC)

MVI AutoCAD Movie Command (Autodesk, Inc.)

MVP MediaView Project

MVR AutoCut Configuration File (Autometrix)

MVS MUSICMATCH Jukebox Visualization (MUSICMATCH, Inc.)

MVU EchoView Adaptive Binary Optimization Format File (MatrixView Pte. Ltd.)

MVW Saber LAN Log File

MVX Intentia International Movex

MVX Mixer File

MW Mail Wiper Mail Control File (Mail Wiper, Inc.)

MW MacWrite II Text Document (Apple)

MW Maple Worksheet (Maplesoft, a Division of Waterloo Maple Inc.)

MW4 MechWarrior 4 Map (Game Structure Archive) (Microsoft Corporation)

MWD Photo Soap2 File

MWF MapGuide Author Map Window (Autodesk, Inc.)

MWF ProMotion Animation

MWI Medlin Accounting Invoice Layout Information (Medlin Accounting)

MWII MacWrite II Text Document

MWL Mighty Draw Windows Library (theliquidateher Software, An MCS Investments, Inc. Company)

MWM Mail Warrior File

MWP Word Pro 97 Smartmaster File (IBM)

MWP MegaWorks Pack File

MWS Medlin Accounting Statement Layout Information (Medlin Accounting)

MWS Maple Spreadsheet (Maplesoft, a Division of Waterloo Maple Inc.)

MWT MetaStock Stock Analysis Template (Equis International)

MWV MovieWorks File

MW_ Audio Utility Midimach Compressed File

MX Modula-3 Linker Information

MX MATLAB Common Matrix Routines (The MathWorks, Inc.)

MX MX Designer Remote Control File

MX3 Bitbop Tuner Locked Sound File

MX3 MATLAB Windows Dynamically Linked Subroutines (The MathWorks, Inc.)

MX3 MP3 Encoded File

MXC ArcView Geocoding Index For Read-Write Coverages (ESRI)

MXD MX Editor Remote Control Device File

MXD ArcMap GIS Project File (Map) (ESRI)

MXE Macro Express

MXE MXEdit File

MXE Quatro Pro Startup Macro (Corel)

MXE Mindex Effect Album

MXE VCom Error Report (V Communications, Inc.)

MXF Material Exchange Format File

MXF SimCity Maxis Font File (Electronic Arts, Inc.)

MXF MX Editor Remote Control File

MXI Mindex Indices File for Indexed Images

MXI Proteus File

MXI Macromedia Extension Information

MXL Moxcel Spreadsheet

MXL PackRat 5.0 Support File

MXM Project/Outlook Team Assign Task (Microsoft)

MXM Mindex Master Index File for a Category

MXP Macromedia Extension Manager

MXP ArcReader Published Map

MXS ArcView Geocoding Index For Read-Write Shapefiles (ESRI)

MXT C Data (Microsoft)

MXT ArcMap Map Template

MXV Movie Edit Pro Video Format (MAGIX)

MYB MYOB Data File (MYOB Technology Pty Ltd.)

MYC Simply Safe Backup Archive (Joshua Cannon Butcher)

MYD MySQL Database

MYDOCS MyDocs Drop Target (Microsoft)

MYI MySQL Database Index

MYL MYLAI Multilingual Transliteration Scheme

MYO MYOB Data File (MYOB Technology Pty Ltd.)

MYP Make Your Point Presentation

MYR Harmony Assistant, Melody Assistant, Myriad Music plug-in, Melody Player Music File (MYRIAD)

MYS Myst Saved Game

MYV Vivaldi Studio Score File (goVivaldi Inc.)

MYW MyWorld Education Drawing

MZ MOZART Music Document

MZB MegaZeux Board

MZC MOZART Chord Dictionary

MZE Maze Creator File

MZE MidiMaze File

MZF MediaZip Compressed File (ACE)

MZF SHARP MZ-series Emulator File

MZM MegaZeux Dynamic Board Section

MZP MOZART Percussion File

MZQ SHARP MZ-series Emulator QuickDisk File

MZS SHARP MZ-series Emulator File

MZT MOZART Template File

MZT SHARP MZ-series Emulator File

MZX MegaZeux World

M_C MailCall 2 File

M_P Pro/ENGINEER Temporary File (PTC)

M_U MazeGold Critical File Backup

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