File types with extensions that start with the letter M

File Extention	File Type	Description
.m	Developer	Mercury Source Code File
.m	Developer	MATLAB Source Code File
.m	Data	Mathematica Input File
.m	Developer	Objective-C Implementation File
.m12	Data	Schiller medilog ECG Raw Data File
.m15	Video	MPEG Video
.m1a	Audio	MPEG-1 Audio File
.m1pg	Video	iFinish Video Clip
.m1v	Video	MPEG-1 Video File
.m2	Game	World or Warcraft Model Object
.m21	Video	MPEG-21 File
.m21	Video	AXMEDIS MPEG-21 File
.m2a	Video	MPEG-1 Layer 2 Audio File
.m2p	Plugin	Maxthon 2 Browser Plugin File
.m2p	Video	MPEG-2 Program Stream File
.m2s	Settings	Maxthon 2 Browser Skin File
.m2t	Video	HDV Video File
.m2ts	Video	Blu-ray BDAV Video File
.m2v	Video	MPEG-2 Video
.m3	3D Image	Blizzard MDX3 Model File
.m3d	3D Image	DIALux 3D Object File
.m3d	3D Image	3D Model File
.m3g	Executable	Mobile 3D Graphics Program
.m3u	Audio	Media Playlist File
.m3u8	Audio	UTF-8 M3U Playlist File
.m4	Developer	Macro Processor Library
.m4a	Audio	MPEG-4 Audio File
.m4b	Audio	MPEG-4 Audio Book File
.m4e	Video	MPEG-4 Video File
.m4p	Audio	iTunes Music Store Audio File
.m4r	Audio	iPhone Ringtone File
.m4u	Video	MPEG-4 Playlist
.m4v	Video	iTunes Video File
.m75	Video	MPEG Video
.ma	3D Image	Maya Project File
.ma1	Audio	Monarch Audio File
.mab	Misc	Mozilla Address Book
.mac	Raster Image	MacPaint Image
.macbin	Data	Macbinary Encoded File
.mad	Misc	Access Module Shortcut
.mae	Game	My Avatar Editor Character File
.maf	Data	Mutation Annotation Format File
.maf	Database	Microsoft Access Form
.maff	Web	Mozilla Archive Format File
.mag	Misc	Access Diagram Shortcut File
.mag	Data	Magic Circuit Layout File
.magik	Developer	Magik Source Code File
.mahjongtitanssave-ms	Game	Mahjong Titans Saved Game
.mai	Data	Microsoft Mail File
.mailhost	Settings	MSN Mailhost Settings File
.mailplanelicense	Misc	Mailplane License File
.mailtoloc	Misc	Mail Internet Location File
.mak	Developer	Makefile
.make	Developer	Xcode Makefile Script
.make	Settings	Drush Makefile
.makefile	Developer	Makefile
.mako	Developer	Mako Template
.mal	Settings	MadAppLauncher Configuration File
.mam	Executable	Microsoft Access Macro
.man	Text	Unix Manual
.mani	Video	Mine-imator Project File
.manifest	Misc	Steam Manifest File
.manifest	System	Windows Application Manifest File
.manm	Game	Vietcong Game Data File
.map	Game	Quake Engine Map File
.map	GIS	Mapjects Server Webparts File
.map	Misc	TECkit Mapping File
.map	Game	Halo Map File
.map	Game	Leges Motus Map File
.map	Data	Weather Defender Map
.map	Web	Image Map
.map	GIS	NAVIGON Map File
.map	Game	Furcadia Dream File
.mapimail	System	Send To Mail Recipient
.maplet	Game	Maplet World File
.mapsdata	Data	iOS Maps Data File
.mapx	Web	Mapjects Client Webparts File
.maq	Database	Microsoft Access Query
.mar	Spreadsheet	Mariner Calc Spreadsheet
.mar	Misc	Mozilla Archive
.mar	Database	Microsoft Access Report
.markdn	Developer	Markdown File
.markdown	Developer	Markdown Documentation File
.mars	Page Layout	Adobe MARS File
.marshal	Database	Marshal Data Migration Model File
.mart	eBook	MartView eBook File
.mas	Game	rFactor Track File
.mas	Data	MEGA Alignment Sequence File
.mas	Database	Access Stored Procedures
.mask	Settings	SpeedGrade Color Mask File
.masseffectprofile	Game	Mass Effect Player Profile
.masseffectsave	Game	Mass Effect Saved Game
.master	Web	ASP.NET Master Page
.mat	Plugin	V-Ray Materials File
.mat	Data	MATLAB MAT-File
.mat	Raster Image	Vue Material File
.mat	Misc	Microsoft Access Table Shortcut File
.mat	3D Image	3ds Max Materials File
.material	Settings	Rigs of Rods Texture Reference File
.mato	Game	Atomic Combat Saved Game
.mau	Misc	Media Attachment Unit
.mav	Database	Access View File
.maw	Database	Access Data Access Page
.max	Page Layout	OmniPage Scanned Document
.max	3D Image	3ds Max Scene File
.max	Game	Action Replay Max Save File
.max	Raster Image	PaperPort Scanned Document
.maxc	3D Image	3ds Max Container File
.maz	Game	Hover! Maze File
.mb	3D Image	Maya Binary Project File
.mb	Misc	Kodak EasyShare Data File
.mbb	Misc	Kodak EasyShare Data File
.mbb	Data	ManaBook Book File
.mbbk	Page Layout	ManaBook Book Kit File
.mbd	Data	Multimedia Builder Project File
.mbf	Backup	Microsoft Money Backup File
.mbg	Data	Mailbag Assistant Mailbox File
.mbg	Data	Microsoft Mailbag
.mbi	Disk Image	Multi-Bootable Information File
.mbk	Backup	dBASE IV Multiple Index Backup File
.mbl	Data	Logger Pro Data File
.mbm	Raster Image	Multi Bitmap File
.mbm	Raster Image	Kerbal Space Program Texture File
.mbox	Text	E-mail Mailbox File
.mbp	eBook	Mobipocket Notes File
.mbp	Data	MediaShow Burning Project File
.mbr	System	Master Boot Record File
.mbr	Audio	Zune Smooth Streaming File
.mbs	Misc	Opera Mailbox File
.mbsa	Data	Microsoft Baseline Security Analyzer File
.mbt	Data	Blue Card Manager Merit Badge Template File
.mbw	Backup	MBRWizard Archive
.mbx	Data	Outlook Express Mailbox
.mc1	Data	MedCalc Data File
.mc2	Misc	MasterCook 5 Cookbook File
.mc5	3D Image	Poser 5 Material File
.mc6	3D Image	Poser Material Collection File
.mc9	CAD	Mastercam 9 Geometry File
.mca	Game	Minecraft "Anvil" Map File
.mcd	Data	Mathcad Document
.mcd	CAD	MiniCAD Design File
.mcdx	Data	Mathcad Prime Document
.mcf	Misc	MasterCook 2 Cookbook File
.mcf	Font	Watchtower Library Font File
.mcfi	Misc	Maya Initial Fluid Cache File
.mcfp	Misc	Maya Fluid Cache Playback File
.mcgame	Game	Minecraft Game Backup File
.mci	Misc	Media Control Interface File
.mcl	Settings	Windows Media Center Link File
.mclevel	Game	Minecraft Map File
.mcmac	Data	MasterCook Mac Document
.mcmeta	Game	Minecraft Animation File
.mco	Misc	Live Messenger Winks File
.mcp	Developer	CodeWarrior Project
.mcp	Data	Megacubo Package
.mcr	Executable	3ds Max Macroscript File
.mcr	Executable	Tecplot Macro
.mcr	Game	Minecraft Region File
.mcr	Game	ePSXe Memory Card File
.mcrp	Encoded	MobyExplorer Encrypted File
.mcs	Raster Image	Mathcad Image
.mcsp	Page Layout	My Craft Studio Project File
.mcsx	Page Layout	My Craft Studio Professional File
.mct	Data	Windows Live Messenger Data File
.mcw	Settings	Monitor Calibration Wizard File
.mcw	Text	MacWrite II Document
.mcworld	Game	Minecraft World Backup File
.mcx	CAD	MICRO CADAM-X/6000 Model Data File
.mcxe	Data	MedicinesComplete Data File
.mcz	3D Image	Compressed Poser Material File
.md	Data	Moneydance Financial Data File
.md	Developer	Machine Description File
.md	Game	Sharkport Saved Game File
.md	Game	SEGA Mega Drive ROM
.md	Developer	Markdown Documentation File
.md	Compressed	MDCD Compressed Archive
.md0	Disk Image	Alcohol Disk Image Segment 1
.md0	Misc	Adobe Photoshop Metadata Cache File
.md1	Disk Image	Alcohol Disk Image Segment 2
.md1	Disk Image	GEAR CD/DVD Disc Image
.md2	Disk Image	Alcohol Disk Image Segment 2
.md2	Game	Quake 2 Player Model
.md3	Game	Quake 3 3D Model
.md5	Misc	MD5 Checksum File
.md5.txt	Text	Message Digest 5 Hash File
.md5anim	3D Image	id Tech 4 Model Animation File
.md5camera	3D Image	id Tech 4 Model Camera File
.md5mesh	3D Image	id Tech 4 3D Mesh File
.md8	Data	GarageCUBE Modul8 Project
.md8	Data	Mediator Project File
.mda	Plugin	Access Add-in
.mdb	Data	Avid Media Database
.mdb	Database	Microsoft Access Database
.mdbackup	Backup	iPhone Data Backup File
.mdbhtml	Database	Microsoft Access Database HTML File
.mdc	Data	Multi Dimension Cube File
.mdc	Audio	MidiCo Karaoke Audio File
.mdc	GIS	Merkaartor Document
.mdd	Data	MDict Resource File
.mdd	3D Image	Point Oven Deformation Data File
.mddata	Backup	iPhone Backup File
.mde	Plugin	ArchiCAD Educational Version Module File
.mde	Plugin	Compiled Access Add-in File
.mdf	Data	Measurement Data Format File
.mdf	Misc	Translation Memory Data Find File
.mdf	Database	SQL Server Database File
.mdf	Disk Image	Media Disc Image File
.mdi	Page Layout	Microsoft Document Imaging File
.mdimporter	Plugin	Metadata Importer
.mdinfo	Backup	iPhone Backup Information File
.mdl	CAD	Lectra Modaris Clothing Design File
.mdl	Data	Rational Rose Model File
.mdl	Game	Half-Life Model File
.mdl	3D Image	Warcraft 3 3D Model Text File
.mdl	Audio	DigiTrakker Module
.mdl	Misc	Flight Simulator Airplane Model
.mdl	Data	MathWorks Simulink Model
.mdl0	Game	Wii Model File
.mdm	Data	HLM Multivariate Data Matrix File
.mdm	Game	Mario Dash Map File
.mdmp	System	Windows Minidump
.mdn	Database	Blank Access Database Template
.mdown	Developer	Markdown File
.mdp	Settings	Visual C++ 5 Workspace File
.mds	Disk Image	Media Descriptor File
.mdt	Data	Microsoft Access Data File
.mdt	Database	GeoMedia Access Database Template
.mdw	Misc	Access Workgroup File
.mdx	Disk Image	Extended Media Descriptor File
.mdx	3D Image	Warcraft 3 Model File
.mdx	Data	Rational XDE Model File
.mdx	Data	MDict Dictionary File
.mdx	Data	Multiple Index File
.mdz	Data	Access Wizard Template
.mdzip	Developer	MagicDraw Project Archive
.me	System	Puppy Linux Partition Flag File
.me	Misc	Temporary Delete Me File
.me	Text	Readme Text File
.me2mod	Game	Mass Effect 2 Modification File
.meb	3D Image	PRO100 3D Interior Catalog Element
.med	Audio	Amiga MED Sound File
.med	Developer	RSView Development Project
.mef	Camera Raw	Mamiya RAW Image
.meg	Data	MEGA Data File
.mega	Data	Megacubo XML Metafile
.mel	Executable	Maya Embedded Language File
.mell	Text	Mellel Word Processing File
.mellel	Text	Mellel Word Processing Document
.mem	Data	GreekToMe Memories File
.mem	Backup	FoxPro Variable File
.mem	Game	Virtual Game Station Memory File
.mem	System	Parallels Desktop Memory Dump File
.mem	Executable	Macro Editor Macro
.mem	Data	Mnemosyne Card Collection
.menc	Data	Windows Mobile Encrypted File
.menu	Game	Quake 3 Engine Menu File
.meo	Encoded	MEO Encrypted Archive
.mer	Developer	RSView Development Runtime File
.merlin2	Data	Merlin Project File
.merlinlicense	Misc	Merlin License File
.mesh	3D Image	3D Mesh Model
.mesh	3D Image	DirectX Mesh File
.met	Data	eMule Resource File
.met	Raster Image	Presentation Manager Metafile
.meta	Video	RealPlayer Metafile
.metadata_never_index	System	Spotlight Never Index File
.mex	Data	Macro Express File
.mf	Developer	Java Manifest File
.mf	Game	Gameplay Multifile
.mf	Font	METAFONT File
.mfa	Developer	Multimedia Fusion Development File
.mfa	Data	MobileFrame App File
.mfcribbon-ms	Developer	MFC Ribbon Definition XML File
.mfe	Data	MobileFrame Enterprise Data File
.mfil	Misc	Blizzard Software Update File
.mfl	Data	Mozilla FastLoad File
.mfo	Data	MobileFrame Object File
.mfo	Page Layout	MediaFace Online Saved File
.mfo	Data	Perl ModInfo Descriptor File
.mfp	Data	Macromedia FlashPaper Document
.mfp	Data	MobileFrame Package
.mfp	Page Layout	MediaFACE Project File
.mfs	Encoded	MetFS Encrypted File System
.mft	Page Layout	MediaFACE Project Template
.mft	Data	Kaspersky File Table
.mfu	Data	MobileFrame Update File
.mfv	Data	MobileFrame Device Pack File
.mfw	Camera Raw	Mamiya Camera Raw File
.mfw	Plugin	MobileFrame Workflow Pack File
.mfx	Plugin	Multimedia Fusion Extension
.mga	Page Layout	Manga Document
.mgc	Vector Image	Microsoft Clip Organizer Media Catalog
.mgc	Data	MGCSoft Equation Illustrator File
.mgcb	Vector Image	Equation Illustrator Project File
.mgdatabase	Misc	MacGourmet Deluxe Database File
.mgf	3D Image	Materials and Geometry Format
.mgk	Settings	ImageMagick Configuration File
.mgl	Game	Age of Empires 2 Replay File
.mgm	GIS	MGMaps File
.mgm	Settings	MGCSoft Equation Illustrator Macro
.mgmf	Vector Image	MindGenius Map File
.mgmt	Vector Image	MindGenius 2-3 Template
.mgmx	Vector Image	MindGenius XML Map File
.mgo	Misc	MacGourmet Recipe File
.mgourmet	Data	MacGourmet Deluxe Document
.mgourmet3	Data	MacGourmet Deluxe 3 Document
.mgourmet4	Data	MacGourmet Deluxe 4 Document
.mgs	Vector Image	MGCSoft Vector Shapes File
.mgspot	Data	MacGourmet Spotlight MetaData File
.mgt	Misc	Musicnotes Guitar Guru Song File
.mgtheme	Settings	MacGourmet Theme File
.mgtx	Vector Image	MindGenius XML Template File
.mgv	Video	PSP Video File
.mgv	Audio	Yamaha MegaVoice File
.mgx	Game	Rise of Nations Saved Game
.mgx	Game	Age of Empires 2 Expansion Replay File
.mhp	Data	Maths Helper Plus File
.mhs	CAD	Xilinx XPS Hardware Specification File
.mht	Web	MHTML Web Archive
.mhtml	Web	MIME HTML File
.mi4	System	Audio Player Firmware File
.mic	Raster Image	Image Composer File
.mid	GIS	MapInfo Data File
.mid	Audio	MIDI File
.midi	Audio	MIDI File
.mif	Page Layout	FrameMaker Interchange Format File
.mif	GIS	MapInfo Interchange Format File
.mif	Misc	Management Information Format
.mig	Backup	Windows Migration Backup File
.mii	Game	Wii Virtual Avatar File
.milk	Plugin	MilkDrop Winamp Plugin Preset
.mim	Encoded	Multi-Purpose Internet Mail Message File
.mime	Encoded	Multi-Purpose Internet Mail Extension
.min	Text	Mint Source File
.min	CAD	Okuma CNC Program File
.mindnode	Data	MindNode Document
.mine	Game	Minecraft Map File
.minesweepersave-ms	Game	Minesweeper Saved Game
.mini2sf	Audio	Nintendo DS Sound Information File
.minincsf	Audio	NCSF Nintendo DS Audio File
.minipsf	Audio	Miniature PlayStation Sound Format File
.minipsf2	Audio	Miniature PlayStation Sound Format File
.miniusf	Audio	Nintendo 64 Song File
.mint	Compressed	Linux Mint Installer File
.mio	Executable	MioEngine Application File
.mip	Raster Image	Multiple Image Print File
.mir	Disk Image	Mini-Image Ripper Disc Image
.mis	Game	Marble Blast Gold Mission File
.mis	Game	Saved Game Mission File
.mission	Game	Vega Strike Mission File
.mission	Data	MissionMaker Project File
.mit	Data	MineEdit Inventory Template File
.mix	Raster Image	Microsoft Image Exchange File
.mix	Game	Command & Conquer Data File
.mix	3D Image	3ds Max Motion Mixer File
.mix	Game	MotoGP Game File
.mj2	Video	Motion JPEG 2000 Video Clip
.mjd	Encoded	Adobe Acrobat MIME Encoded Job Definition File
.mjdoc	Misc	MacJournal Document
.mjk	Data	Question File
.mjp	Video	MJPEG Video File
.mjpg	Video	Motion JPEG Video File
.mk	Developer	Makefile
.mk3d	Video	Matroska 3D Video File
.mk4	Data	Schiller medilog ECG Raw Data File
.mka	Audio	Matroska Audio File
.mkv	Video	Matroska Video File
.ml	Developer	ML Source Code File
.mlb	Developer	Visual FoxPro Library
.mlb	Data	MyLabel Designer Deluxe Project File
.mlc	Disk Image	MobaLiveCD File
.mlc	System	Microsoft Language Interface Pack
.mlk	Settings	MasterCook Look File
.mll	Plugin	Maya Plugin
.mlp	Audio	Meridian Lossless Packing Audio File
.mls	Data	Milestones Simplicity File
.mls	Misc	CrystalPlayer Playlist
.mm	Data	FreeMind Mind Map
.mm	Developer	Objective-C++ Source File
.mm6	Data	Money Manager 6 File
.mm6	Game	Might and Magic 6 Saved Game
.mm7	Game	Might and Magic 7 Saved Game
.mm8	Game	Might and Magic 8 Saved Game
.mma	Data	Master Album Maker Photo Album File
.mmap	Data	MindManager Map File
.mmat	Vector Image	MindManager Map Template
.mmc	Data	Microsoft Media Catalog
.mmcollection	Data	Mail Manager Collection File
.mmdc	Settings	MediaMonkey Device Configuration File
.mme	Encoded	Multi-Purpose Internet Mail
.mmf	Data	Meal-Master Recipe File
.mmf	Data	Microsoft Message File
.mmf	Audio	Synthetic Music Mobile Application File
.mmip	Plugin	MediaMonkey Installation Package
.mml	Page Layout	FrameMaker Maker Markup Language File
.mml	Data	Microsoft Clip Organizer File
.mml	Data	MyMailList & AddressBook File
.mmm	Data	Money Manager File
.mmm	Audio	Music Maker Arrangement File
.mmm	Data	Multiple Master Metric Data File
.mmm	GIS	MiraMon Maps File
.mmo	Misc	Memory Map Overlay File
.mmp	Data	Master Album Maker Project
.mmp	Audio	MixMeister Playlist
.mmp	Audio	LMMS Project File
.mmp	Settings	Symbian Project Specification File
.mmp	Data	MindManager Mind Map
.mmpz	Audio	LMMS Project File
.mmu	Data	myPM Merge Data File
.mmv	Video	MicroMV Video File
.mmw	Data	Microsoft Clip Organizer Media Catalog File
.mmw	Data	AceMoney Money File
.mmz	GIS	MiraMon Compressed Map File
.mnc	Encoded	AutoCAD Compiled Menu File
.mnc	Data	My Notes Center Notebook
.mng	Data	Yamaha PSR Disk Manager File
.mng	Raster Image	Multiple Network Graphic
.mnh	GIS	Master Navigator Header File
.mnk	Data	My Notes Keeper Notebook
.mnl	Misc	AutoCAD Menu LISP File
.mnm	3D Image	Character Studio Marker Name File
.mno	Data	Macromedia Design Note
.mnr	Raster Image	AutoCAD Menu Resource File
.mns	Settings	AutoCAD Interface Settings File
.mnt	Text	FoxPro Menu Memo
.mnu	Settings	TomTom Menu File
.mnu	Settings	Adobe Photoshop Menu Customization File
.mnu	Settings	AutoCAD Interface Layout File
.mnv	Video	PlayStation Movie File
.mnx	Misc	FoxPro Menu
.mny	Data	Microsoft Money File
.mo	Developer	Machine Object File
.mo3	Audio	MO3 Audio File
.mob	Video	MOBTV Video File
.mobi	eBook	Mobipocket eBook
.mobileconfig	System	Apple Mobile Configuration File
.mobileprovision	Misc	Xcode Mobile Provisioning Profile
.mod	System	GRUB Module
.mod	Developer	Fortran Module File
.mod	Game	Neverwinter Nights Module
.mod	Video	Camcorder Recorded Video File
.mod	Audio	Amiga Music Module File
.mod	Plugin	ArchiCAD Module
.modd	Video	Sony Video Analysis File
.mode	Plugin	Coda Syntax Mode File
.model	CAD	CATIA 3D Model FIle
.module	Plugin	Drupal Module File
.mof	Settings	Managed Object Format File
.moff	Video	Sony Video Analysis Index File
.mogg	Audio	Multitrack Ogg File
.moho	Data	Anime Studio Animation Project
.moi	Video	MOI Video File
.mol	Data	MDL Molfile
.mom	Developer	Managed Object Model
.momma	Game	Offspring Fling Replay File
.money	Data	Money Data File
.moneywell	Data	MoneyWell Account File
.montage	Misc	Montage Screenplay File
.moov	Video	Apple QuickTime Movie
.mos	Camera Raw	Leaf Camera RAW File
.mosaic	Data	MacOSaiX Mosaic File
.mot	3D Image	LightWave Motion File
.mou	Compressed	WinMount Compressed File
.mov	Video	Apple QuickTime Movie
.movie	Video	QuickTime Movie File
.mox	Plugin	Montax Imposer Template Document
.mox	Data	ExtendSim Simulation Software Model
.moz	Web	Mozilla Cache File
.mp	Vector Image	LaTeX MetaPost File
.mp	3D Image	Maya PLE Project File
.mp1	Audio	MPEG-1 Layer 1 Audio File
.mp10	CAD	Multisim 10 Project File
.mp11	CAD	Multisim 11 Project File
.mp2	Audio	MPEG Layer II Compressed Audio File
.mp21	Video	MPEG-21 Multimedia File
.mp21	Video	AXMEDIS MPEG-21 Object
.mp2m	Game	Max Payne 2 Mod File
.mp2s	Game	Max Payne 2 Saved Game
.mp2v	Video	MPEG-2 Video File
.mp3	Audio	MP3 Audio File
.mp4	Video	MPEG-4 Video File
.mp4.infovid	Video	Parrot AR Drone and Gyro Flyer Video
.mp4v	Video	MPEG-4 Video
.mp7	CAD	Multisim 7 Project File
.mp9	CAD	Multisim 9 Project File
.mp_	Audio	Mobile Phone Sound File
.mpa	Audio	MPEG-2 Audio File
.mpb	Backup	MyPhoneExplorer Backup File
.mpc	Audio	Musepack Compressed Audio File
.mpcpl	Misc	Media Player Classic Playlist
.mpd	Database	Microsoft Project Database
.mpd	Data	File List Creator Playlist
.mpdconf	Settings	Music Player Daemon File
.mpdp	Audio	MixPad Project File
.mpe	Video	MPEG Movie File
.mpeg	Video	MPEG Movie
.mpeg1	Video	MPEG-1 Video File
.mpeg4	Video	MPEG-4 File
.mpf	Raster Image	Microsoft Media Package FIle
.mpf	Video	MainActor Project File
.mpg	Video	MPEG Video File
.mpg2	Video	MPEG-2 Video File
.mpga	Audio	MPEG-1 Layer 3 Audio File
.mpgindex	Video	Adobe MPEG Index File
.mpi	Data	InstallJammer Project File
.mpj	Data	Minitab Project File
.mpj	3D Image	MessiahStudio Project File
.mpj	Data	RoboHelp HTML Project
.mpk	GIS	ArcGIS Map Package
.mpk	Game	Project64 Memory Pack File
.mpkg	Compressed	Meta Package File
.mpkt	Data	MOPEKS Trial File
.mpl	Video	AVCHD Playlist File
.mpl	Video	MPL2 Subtitles File
.mpls	Video	Blu-ray Movie Playlist File
.mpm	Game	Max Payne Modfication File
.mpo	Raster Image	Multi Picture Object File
.mpp	Data	MobileFrame Project Publisher File
.mpp	Data	Microsoft Project File
.mppz	Data	MagicPlot Project File
.mpq	Game	Blizzard Mo'PaQ File
.mpqe	Data	Blizzard Encrypted Mo'PaQ File
.mpr	Developer	FoxPro Generated Menu Program
.mpr	Data	FileMaker Dictionary File
.mpr	Data	Direct Mail Project File
.mps	Game	Max Payne Saved Game
.mps	Data	Mathematical Programming System File
.mps	GIS	Pocket Streets Map File
.mpsub	Video	MPlayer Subtitles File
.mpt	Data	Microsoft Project Template
.mpu	Audio	MPEG Layer 3 Audio File
.mpv	Video	MPEG Elementary Stream Video File
.mpv2	Video	MPEG-2 Video Stream
.mpw	Settings	Microsoft Project Workspace File
.mpx	Data	Microsoft Project Exchange File
.mpx	Executable	FoxPro Compiled Menu Program
.mpz	Game	Red Eclipse Map File
.mpz	Data	Miradi Project File
.mpzip	Data	Multisim Pack File
.mq4	Data	MetaTrader Custom Indicator
.mqo	3D Image	Metasequoia Document
.mqv	Video	Sony Movie Format File
.mrb	Raster Image	Multiple Resolution Bitmap File
.mrc	Executable	mIRC Script File
.mrg	Database	MySQL Merge File
.mrg	Page Layout	Now Contact Merge Template
.mrimg	Disk Image	Macrium Reflect Disk Image
.mrk	Misc	DPOF Auto Print Order File
.mrml	3D Image	3D Slicer Scene Description File
.mrs	Game	GunZ Game Data File
.mrt	Developer	Stimulsoft Report File
.mrw	Camera Raw	Minolta Raw Image File
.mrxs	Raster Image	MIRAX Virtual Slide File
.ms	Executable	3ds Max Script File
.ms	Executable	Maxwell Script
.ms-tnef	Misc	MS Transport Neutral Encapsulation Format
.ms1	Game	VirtualBus Map File
.ms10	Data	Multisim 10 Circuit Design File
.ms11	CAD	Multisim 11 Circuit Design File
.ms3d	3D Image	MilkShape 3D Model
.ms7	CAD	Multisim 7 Circuit Design File
.ms8	Data	Multisim 8 Circuit Design File
.ms9	CAD	Multisim 9 Circuit Design File
.msb	Data	Oracle Binary Message File
.msc	Data	MuseScore Composition File
.msc	System	Microsoft Management Console Snap-in Control File
.msct	Data	MOPEKS Script File
.mscx	Audio	MuseScore Music Score File
.mscz	Audio	MuseScore Compressed Score File
.msd	GIS	Map Service Definition File
.msdvd	Video	Windows DVD Maker Project File
.mse	Encoded	3ds Max Encrypted MAXScript File
.mse	Video	MediaShow Slideshow Project File
.msf	Settings	Miranda IM Skin File
.msf	Data	Blue Card Manager Merit Badge Mastersheet File
.msf	Misc	Mail Summary File
.msg	Text	Outlook Mail Message
.msh	Video	Visual Communicator Project File
.msh	3D Image	Orbiter 3D Mesh File
.msha	Developer	Microsoft Help Asset File
.mshc	Developer	Microsoft Help Container File
.mshi	Developer	Microsoft Help Index File
.msi	Misc	Windows Installer Package
.msif	Data	MyLabel Designer Deluxe Data File
.msk	Raster Image	Paint Shop Pro Mask File
.mskn	Settings	MediaMonkey Skin File
.msl	Developer	Mapping Specification Language File
.msl	Executable	Magick Scripting Language File
.msm	Settings	Windows Installer Merge Module
.msn	Settings	Host Blocking File
.mso	Misc	Inline E-mail Attachment
.mso	Misc	Microsoft Office Macro Reference File
.msp	System	Windows Installer Patch
.msp	Raster Image	Microsoft Paint Bitmap Image
.msp	Data	ClarisWorks Dictionary File
.msp	Developer	MaxScript Page File
.mspx	Web	Microsoft ASP.NET Web Page
.msrcincident	Misc	Windows Remote Assistance Invitation File
.mss	Data	MyScreenSaver Builder File
.mss	Developer	Microprocessor Software Specification File
.msstyle	System	Windows XP Unsigned Style
.msstyles	System	Windows XP Style
.mst	Settings	Windows Installer Setup Transform File
.mst	Settings	Corel Presentations Master Template File
.msu	Misc	Windows Vista Update Package
.msv	Audio	Memory Stick Voice File
.msw	Settings	Painter Color Mixer Swatches File
.mswmm	Video	Windows Movie Maker Project
.mt2	Audio	MadTracker 2 Module
.mt9	Audio	MT9 Audio File
.mta	Misc	Samsung AllShare Metadata File
.mtd	Misc	Musicnotes Digital Sheet Music File
.mte	Audio	MadTracker 2 Envelope
.mtf	Data	Mortality Table File
.mtf	Audio	Multi Tracker File
.mtf	Misc	Translation Memory Translations File
.mtf	Settings	Motorola Theme File
.mtf	Misc	MasterCook Tips
.mth	Data	Derive Math File
.mthd	Misc	MOPEKS Method File
.mti	Audio	MadTracker Instrument
.mtl	3D Image	OBJ Material File
.mtm	Data	Macrofocus TreeMap File
.mtm	Audio	MultiTracker Module
.mtp	Audio	MadTracker 2 Pattern
.mts	Video	AVCHD Video File
.mts	Data	MEGA Tree Session File
.mts	Audio	MadTracker 2 Sample File
.mtt	Data	MetadataTouch Template
.mtv	Video	MTV Video Format File
.mtw	Data	Minitab Worksheet File
.mtx	Plugin	MadTracker 2 Extension
.mtx	3D Image	MetaStream Scene File
.mtxt	Data	MOPEKS Text File
.mtz	3D Image	Compressed MetaStream Scene File
.mtz	System	MIUI Theme
.mu	3D Image	Kerbal Space Program Mesh File
.mu3	Audio	Myriad Packed Musical Score
.mud	3D Image	Mudbox 3D Scene File
.mud	Database	Textease Multi User Database
.muf	Data	Alpha Five License File
.mui	System	Multilingual User Interface File
.mui	Audio	Myriad Instrument File
.mui_cccd5ae0	System	Hid User Library
.mul	Game	Deus Ex: HR Multiplexed Audio File
.mul	Game	Ultima Online Multi File
.mum	System	Windows Vista Update Package
.mup	Data	Music Publisher Score
.mus	Audio	Doom Music File
.mus	Game	Electronic Arts Game Music File
.mus	Audio	Finale Notation File
.mus	Audio	Minecraft Music File
.musa	Audio	Aleph One Music File
.muse	Web	Adobe Muse Website Project
.musx	Audio	Finale Notation File
.mux	Audio	Myriad Stand-Alone Music Score
.mux	Audio	Trackmania Music File
.muz	Audio	MUZ Audio File
.mv	Developer	MivaScript File
.mv_	Backup	Movie Edit Pro Movie Backup File
.mvb	Video	Multimedia Viewer Book Source File
.mvc	Video	Movie Collector Catalog
.mvc	Web	MivaScript Compiled File
.mvd	Video	Movie Edit Pro Movie File
.mve	Video	Infinity Engine Movie File
.mvex	Video	Muvee autoProducer 6 Project File
.mvi	Misc	AutoCAD Movie Command File
.mvp	Video	Movie Edit Pro Video Project File
.mvp	Video	MoviePlus Project File
.mvr	Web	IBM HotMedia Multimedia File
.mvs	CAD	Microchip Verification Specification File
.mvx	Developer	Multimedia Fusion Movement Extension
.mvy	Video	Video easy Project File
.mw	Text	MacWrite Text Document
.mw	Data	Maple Worksheet
.mwand	Audio	GarageBand MagicMentor Template
.mwb	Database	MySQL Workbench Document
.mwd	Text	MarinerWrite Document
.mwf	Data	MapGuide Author Map Window File
.mwf	Misc	Translation Memory Word Find File
.mwlic	Misc	MoneyWell License File
.mwp	Text	Lotus Word Pro SmartMaster File
.mws	Audio	MWave DSP Synth Instrument Extract
.mws	Data	Maple Classic Worksheet
.mwx	GIS	MapGuide Author Map Window XML File
.mwx	Data	MicroWorlds EX File
.mx	Data	Mathematica Serialized Package File
.mx3	Audio	Mixcraft 3 Audio Project
.mx4	Audio	Mixcraft 4 Audio Project
.mx5	Audio	Mixcraft 5 Audio Project
.mx5template	Audio	Mixcraft 5 Audio Project Template
.mxad	Data	Mandelbrot Explorer All Data File
.mxaddon	Plugin	Maxthon Add-On File
.mxc2	Data	MAGIX Cache File
.mxcs	Settings	Mandelbrot Explorer Color Scheme File
.mxd	GIS	ArcGIS Map Document
.mxdic	Data	Maxthon Dictionary File
.mxe	Executable	Macro Express Playable Macro
.mxf	Video	Material Exchange Format File
.mxf	Font	Maxis Font File
.mxfr	Settings	Mandelbrot Explorer Fractal Region File
.mxg	Data	Miinoto Exchangeable Group File
.mxi	Data	Adobe Extension Information File
.mxi	Raster Image	Maxwell Image
.mxl	Audio	Compressed MusicXML File
.mxm	3D Image	Maxwell Material File
.mxmf	Audio	Mobile XMF Ringtone File
.mxml	Developer	Flex MXML Component
.mxn	Misc	Miinoto Exchangeable Note File
.mxp	Plugin	Adobe Extension Package
.mxs	Settings	Painter Color Mixer Pad File
.mxs	3D Image	Maxwell Studio Scene File
.mxskin	Settings	Maxthon Skin File
.mxt	GIS	ArcGIS Map Template
.mxv	Video	MAGIX Video File
.myapp	Developer	Visual Studio Application XML File
.mycolors	Settings	Stardock MyColors Theme File
.myd	Database	MySQL Database Data File
.mydocs	System	Send To My Documents
.myi	Data	MySQL MyISAM Index File
.myl	Raster Image	MyLogo Maker Image
.myr	Audio	Myriad Music File
.mys	Video	Vineyard Captured Video File
.mzp	Compressed	WinArchiver Mountable Archive
.mzp	Audio	Mozart Percussion File
.mzp	Compressed	MAXScript Zip Package
.mzz	Misc	Microsoft .NET Download Package