文字Mのファイル形式
| ファイル拡張子 | ファイルのフルネーム |
|---|---|
| M | Objective-C Language Source Format |
| M!95 | Adobe Director For Mac |
| M-JPEG | M-JPEG |
| M01 | MicroStation Modification Resource |
| M10 | Microsoft Money 2002 Data |
| M11 | Microsoft Money 2003 Data |
| M12 | Microsoft Money 2004 Data Format |
| M13 | Microsoft Media Viewer |
| M14 | Microsoft Media Viewer |
| M15 | Apple QuickTime Format |
| M16 | Microsoft Money 2007 Data |
| M1A | MPEG-1 Audiostream Format |
| M1C | IBM Voice Type Languages Newuser |
| M1I | IBM Voice Type Languages Newuser |
| M1PG | IFinish Video Format |
| M1S | MPEG-1 System Stream |
| M1V | Moving Pictures Experts Group Video (MPEG-1 IPB) |
| M2 | World Of Warcraft Model Object File Format |
| M21 | MPEG-21 Video Format |
| M25 | Symantec Endpoint Protection Manager |
| M2A | MPEG-2 Audio |
| M2C | IBM Voice Type Languages Newuser |
| M2D | HTC Manila 2D For Windows Mobile Skin |
| M2DCT | HTC Manila 2D For Windows Mobile Skin |
| M2F | Maxthon Filter Package |
| M2I | IBM Voice Type Languages Newuser |
| M2L | Maxthon Language Package |
| M2M | TiMidity++ M2M Settings |
| M2P | MPEG-2 Stream File Format |
| M2R | Avaya Mib2Rules Perl Script |
| M2S | MPEG-2 Audio Video Format |
| M2T | MPEG-2 Transport Stream Format |
| M2TS | MPEG-2 Stream (Blu-Ray) |
| M2U | Maxthon Layout |
| M2V | MPEG-2 Packetized Elementary Stream |
| M3 | Blizzard StarCraft 2 MDX3 Model Format |
| M32 | Duke Nukem 3D Script |
| M3C | IBM Voice Type Languages Newuser |
| M3D | DIALux 3D Object Format |
| M3G | Nokia Mobile 3D Graphics Program Format |
| M3H | Starcraft 2 Model Data |
| M3I | IBM Voice Type Languages Newuser |
| M3S | Myst III Exile Saved Game |
| M3T | Myst 3 Exile Text |
| M3U | MP3 Songs Playlist Format |
| M3U8 | UTF-8 M3U Playlist Format |
| M3URL | SMIL MP3 Playlist |
| M3V | DJ Mix Pro Playlist |
| M3X | MAGIX Digital Photo Maker PhotoCD Playlist |
| M4 | M4 Preprocessor Macro Format |
| M4A | MPEG-4 Compressed Audio Format |
| M4B | MPEG-4 Audio Layer Audio Book Format |
| M4C | IBM Voice Type Language Newuser |
| M4D | Sage MAS 90 Data |
| M4E | MPEG-4 Video Format |
| M4F | Sony Network Camera MPEG-4 Video |
| M4I | IBM Voice Type Languages Newuser |
| M4L | Sage MAS 90 Data |
| M4P | Apple ITunes Music Store Audio Format |
| M4R | Apple IPhone Ringtone Format |
| M4S | Myst IV: Revelation Save Game |
| M4T | Sage MAS 90 Table |
| M4U | MPEG-4 Playlist Format |
| M4V | MPEG-4 Video File Format |
| M51 | ARM Keil Tools Linker Listing |
| M64 | Mupen64 Movie Capture |
| M68 | Turbo Pascal Dos |
| M75 | Apple QuickTime Format |
| M7A | MapKing Map |
| M7D | MapKing Navigation Map |
| M7P | Multilizer PDF Translator Project |
| M8 | Heretic II MipMap Image |
| M?? | Ingres Modify Table/Index |
| MA | Autodesk Maya ASCII Scene Format |
| MA0 | Diablo II Act 1 Saved Map Progress |
| MA1 | Monarch Audio Format |
| MA1MMF | SMAF Synthetic Music Mobile Application Format |
| MA2 | Bibexcel |
| MA2MMF | SMAF Synthetic Music Mobile Application Format |
| MA3 | Harvard Graphics Macro |
| MAB | Mozilla Address Book Format |
| MAC | MacPaint Bitmap Image |
| MACA | MacWrite Document |
| MACBIN | MacBinary Archive |
| MACP | Apple Macintosh MacPaint Bitmap Image |
| MACS | MADRIX Encrypted Script |
| MAD | Microsoft Access Module Shortcut Format |
| MAE | Maestro Molecular Model Format |
| MAF | Microsoft Access Form Shortcut Format |
| MAFF | Mozilla Archive Format |
| MAG | Microsoft Access Diagram Shortcut Format |
| MAGIC | Magic Mail Monitor Configuration |
| MAGIK | Magik Source Code Format |
| MAHJONGTITANSSAVE-MS | Mahjong Titans Save Game Format |
| MAI | Microsoft Mail Message Format |
| MAILDB | MSN Mail |
| MAILHOST | E-mail Server Preferences Format |
| MAILLOC | Apple Mac OS X Finder Mail Internet Location |
| MAILPLANELICENSE | Mailplane License Format |
| MAILSTATIONERY | Apple Mail |
| MAILTOLOC | Apple Mail Mail Address Format |
| MAIN | FileMaker Dictionary |
| MAJ | Camduct Job |
| MAK | Make Format |
| MAKE | Makefile |
| MAKEFILE | Make Format |
| MAKER | Adobe Framemaker |
| MAKI | Winamp MAKI Compiled Script |
| MAKO | Mako Tamplate Format |
| MAL | MadAppLauncher Settings Format |
| MAM | Microsoft Access Macro Shortcut Format |
| MAML | Microsoft Assistance Markup Language |
| MAN | Unix Text Manual Format |
| MANAGED_MANIFEST | Silverlight Manifest |
| MANI | Mine-imator Project Format |
| MANIFEST | Manifest Format |
| MANIFEST-DESKTOP | Ubuntu Desktop CD Manifest |
| MANM | Vietcong Game Data Format |
| MAO | Dragon Age Origins MAO XML |
| MAP | Geographical Map Format |
| MAPIMAIL | Windows Send To Mail Recipient Format |
| MAPLET | Maplet World Format |
| MAPLIB | Mscape Map |
| MAPSDATA | Apple IOS Map Data Format |
| MAPX | Mapjects GRYD Webserver Format |
| MAQ | Microsoft Access Query Shortcut Format |
| MAR | Microsoft Access Report Shortcut Format |
| MARC | MAchine-Readable Cataloging (MARC) Document |
| MARKDN | Markdown Markup Language Document Format |
| MARKDOWN | Markdown Markup Language Format |
| MARS | Adobe Mars Format |
| MARSHAL | Marshal Editor Data Migration Model Format |
| MART | Martview Ebook Format |
| MAS | Microsoft Access Stored Procedures Format |
| MASH | Java |
| MASK | SpeedGrade Color Mask Format |
| MASSEFFECTPROFILE | Mass Effect User Profile |
| MASSEFFECTSAVE | Mass Effect Saved Game |
| MASTER | ASP Master Page Format |
| MAT | Microsoft Access Table Shortcut Format |
| MATCH-RDB | RDB |
| MATERIAL | Rigs Of Rods Texture Reference Format |
| MATH | AnalyticMath |
| MATLAB | Matlab Script |
| MATO | Atomic Combat Saved Game Format |
| MATPROJ | Dragon Age Origins Material |
| MAU | Media Attachment Unit Format |
| MAUD | Amiga MAUD Sound |
| MAV | Microsoft Access View Format |
| MAW | Microsoft Access Data Access Page Format |
| MAX | 3D Studio Max Scene Format |
| MAXC | 3D Studio Max Container Format |
| MAXD | PaperPort Annotation |
| MAXM | Paperport |
| MAZ | Microsoft Windows Hover! Maze Format |
| MB | Autodesk Maya Binary Scene Format |
| MB1 | Monster Bash Game Data |
| MB3 | Minimal Board Editor (MBE) |
| MB4 | Model Builder Model Design |
| MBA | Martus Human Rights Bulletin System |
| MBAC | MascotCapsule Resource |
| MBAS | MikroBasic Source Code |
| MBB | ManaBook Format |
| MBBK | ManaBook Book Kit Format |
| MBC | Mulberry E-mail Client Cache |
| MBD | Multimedia Builder MP3 Authoring Format |
| MBDB | Apple IOS Backup Manifest |
| MBDX | Apple IOS Backup Manifest |
| MBE | MVP Baseball 2005 Game |
| MBF | Microsoft Money Backup Format |
| MBFAVS | Stardent AVS X Bitmap Image |
| MBFS | Stardent AVS X Bitmap Image |
| MBFX | AVS X Image |
| MBG | Mailbag Assistant E-mail Archive Format |
| MBI | MagicISO Multi-bootable Information Format |
| MBK | DBASE IV Multiple Index File Backup |
| MBKP | Memeo Instant Backup Backup |
| MBL | Logger Pro Experiment Data Format |
| MBM | EPOC Multi-bitmap Format |
| MBOX | Mail Mailbox Format |
| MBP | Mobipocket EBook Auxiliary Format |
| MBP1 | Kindle Touch Annotation |
| MBR | Zune Smooth Streaming Format |
| MBS | Opera Mailbox Format |
| MBSA | Microsoft Baseline Security Analyzer Format |
| MBSB | Mamut Business Software Company Database Backup |
| MBSYNCSTATE | Mbsync Folder Backup |
| MBT | Blue Card Manager Merit Badge Template Format |
| MBTEMMPLATE | ModelBaker Custom Template Directory |
| MBV | JVC Everio MediaBrowser Movie |
| MBW | Easy Mail Backup Wizard Format |
| MBX | E-mail Mailbox Format |
| MBZ | Pogoshell NES Emulator Plugin |
| MC | Microsoft Windows Localized Message Table Resource |
| MC1 | MedCalc Data Format |
| MC2 | MasterCook Cookbook Recipe Text Data Format |
| MC3 | Bridge Design Modeler 3D Match-casting Geometry Control |
| MC4D | Cinema 4D 3D Graphic |
| MC5 | Poser 5 Material Format |
| MC6 | Poser 6 Material Format |
| MC8 | Mastercam V8 |
| MC9 | Mastercam V9 CAD Format |
| MCA | Minecraft Anvil Format |
| MCACC | MCACC Measurement Data |
| MCB | NEPLAN Project |
| MCBN | Microsoft Excel 4 For Mac Chart |
| MCC | Amiga MUI External Class Library |
| MCD | VectorWorks Drawing Format |
| MCDB | Adobe Premiere Pro Media Cache Database |
| MCDX | Mathcad Prime Document Format |
| MCF | Mathcad Font Format |
| MCFI | Autodesk Maya Initial Fluid Cache Format |
| MCFP | Autodesk Maya Fluid Cache Playback Format |
| MCGAME | Minecraft Backup Format |
| MCI | Media Control Interface Command Script Format |
| MCK | Macro Keys Encrypted Macro |
| MCL | Microsoft Media Center Application Shortcut Format |
| MCLEVEL | Minecraft Map Format |
| MCMAC | MacGourmet MasterCook Document |
| MCMETA | Minecraft Animation Settings Format |
| MCML | Microsoft Windows Media Center MCML |
| MCO | MSN Messenger Wink Format |
| MCP | MSN Content Plus Installer Format Archive |
| MCR | Autodesk 3D Studio Max Macroscript Format |
| MCRP | MobyExplorer Encrypted Format |
| MCS | MathCAD Raster Picture Image Format |
| MCSP | My Craft Studio Project Format |
| MCSX | My Craft Studio Professional Format |
| MCT | Musicator MIDI |
| MCUSW | Nokia Mobile Phones With Symbian Firmware |
| MCV | ManyCam Effect |
| MCW | Microsoft Word 5 For Mac Document Format |
| MCWORLD | Minecraft World Backup Format |
| MCX | Mastercam X And X2 File Format |
| MCXE | MedicinesComplete Data Format |
| MCXML | Microsoft Office 2013 XML Settings |
| MCZ | Poser Compressed Material Format |
| MD | MDCD Compressed File Archive |
| MD0 | Adobe Photoshop Format Browser Metadata Cache Format |
| MD03 | Adobe Director |
| MD1 | GEAR CD Suite CD Image Format |
| MD2 | Quake 2 Model Format |
| MD2P | MessengerDiscovery |
| MD2S | MessengerDiscovery |
| MD3 | Quake 3 Model Format |
| MD4 | Quake 3 MD4 Skeletal Model Format |
| MD5 | Checksum Format |
| MD5TXT | Message Digest 5 Hash Format |
| MD5ANIM | Doom 3 ID Tech 4 Game Engine Model Animation Format |
| MD5CAMERA | Doom 3 ID Tech 4 Game Engine Model Camera Format |
| MD5MESH | Doom 3 ID Tech 4 Game Engine 3D Mesh Format |
| MD8 | GarageCUBE Modul8 Project Format |
| MDA | Microsoft Access Add-in Format |
| MDAT | REW Measurement |
| MDB | Microsoft Access Database Format |
| MDBACKUP | Apple IPhone Backup Format |
| MDBHTML | Microsoft Office Access HTML Document Format |
| MDBX | Access Based Database |
| MDC | Image Minolta RD175 |
| MDD | Point Oven Deformation Data Format |
| MDDATA | Apple IPhone Backup Data Format |
| MDE | Microsoft Access Compiled Database (application) Format |
| MDES | Trimaran Machine Description |
| MDF | Alcohol 120% Disc Image File Format |
| MDG | Enterprise Architect |
| MDHTML | Microsoft Access HTML |
| MDI | Microsoft Office Document Imaging File Format |
| MDIMPORTER | Spotlight Importer Setting |
| MDINFO | Apple IPhone Info Format |
| MDK | Astra Schedule Schedule |
| MDL | Flight Simulator 95/98 3D Model Format |
| MDLE | Motion Description Language Extended |
| MDM | HLM Multivariate Data Matrix Format |
| MDMP | Microsoft Windows Minidump Format |
| MDN | Microsoft Access Blank Database Template Format |
| MDO | Alcohol 120% Split Image |
| MDOWN | Markdown Markup Language Format |
| MDP | Microsoft Visual C++ Visual J++ MAK File (old Project Workspace) |
| MDPF | Mac OS X Modem Preferences |
| MDPL | MacDraw II |
| MDR | ZX Spectrum Microdrive Emulator |
| MDRC | MADRIX DMX Remote Configuration |
| MDRW | MacDraw |
| MDS | Alcohol 120% Image File (media Descriptor File) Format |
| MDT | Microsoft Access Database Template Format |
| MDTEXT | Markdown Markup Language |
| MDTXT | Markdown Markup Language |
| MDUS | MessengerDiscovery |
| MDV | QLAY |
| MDW | Microsoft Access Workgroup Information Format |
| MDWN | Markdown Markup Language |
| MDX | Media Data EXtended Image Format |
| MDZ | Microsoft Access Wizard Template Format |
| MDZIP | MagicDraw Compressed Project Format |
| ME | Readme Text Format |
| ME2HEADMORPH | Mass Effect 2 Head Morph |
| ME2MOD | Mass Effect 2 Game Modification Format |
| MEA | Mastersizer 2000 Sample Analysis |
| MEB | PRO100 Library Format |
| MECH | Pro/MECHANICA Settings |
| MECONTACT | Microsoft Live Messenger |
| MED | Amiga MED Sound Format |
| MEDIAWIKI | Mediawiki Source |
| MEF | Mamiya ZD MEF Image Format |
| MEG | MEGA Data Format |
| MEGA | Megacubo Metafile |
| MEL | Maya Embedded Language |
| MELL | RedleX Mellel Document Format |
| MELLEL | RedleX Mellel Document Format |
| MEM | Microsoft Visual FoxPro Mem Format |
| MEMB | Pro/ENGINEER Temporary |
| MEN | MenuPro Restaurant Menu Design |
| MENC | Microsoft Windows Mobile Encrypted Format |
| MENU | Apple Mac OS X SystemUIServer MenuExtra Plugin Format |
| MENUDATA | VMWare Cache |
| MEO | MEO Encrypted Format |
| MEQ | Corel WordPerfect Macro Editor Print Queue |
| MER | Corel WordPerfect Macro Editor Resident Area Format |
| MERLIN2 | Merlin Project Format |
| MERLINLICENSE | Merlin License Format |
| MES | Corel WordPerfect Macro Editor Work Space |
| MESA | OpenGL GLUT |
| MESH | 3D Graphic Format |
| MET | EMule Cached Information Format |
| META | RealPlayer Metafile |
| META4 | Metalink 4.0 |
| METADATA_NEVER_INDEX | Spotlight Never Index Format |
| METALINK | Metalink 3.0 |
| METASTOCK | Metastock Data |
| METRICLOG | Apple IOS Diagnostic |
| MEU | DOS Shell Menu Group |
| MEW | MultiEdit Configuration |
| MEX | Corel WordPerfect Macro Editor Expound Format |
| MEX4 | Sun-4/SPARC Dynamically Linked Subroutines |
| MEXDS | MATlab Dynamically Linked Subroutines |
| MEXHP3 | Matlab HP9000/series 300 Dynamically Linked Subroutines |
| MEXHP7 | Matlab HP9000/series 700 Dynamically Linked Subroutines |
| MEXN | Matlab NeXT Dynamically Linked Subroutines |
| MEXRS6 | Matlab IBM RS/6000 Dynamically Linked Subroutines |
| MEXSG | Matlab Dynamically Linked Subroutine |
| MEXW32 | MATlab Program Executable |
| MF | Java Manifest Format |
| MF2 | Authorware Mediator5 Multimedia |
| MF4 | Version 4.0 Measurement Data Format |
| MFA | Multimedia Fusion Development Format |
| MFALIST | Ashampoo Photo Commander Slideshow List |
| MFASL | Netscape XUL Fastload Format |
| MFCRIBBON-MS | MFC Ribbon Definition XML Format |
| MFD | Adobe Multiple Master Font Metrics Directory |
| MFE | Character Studio Format |
| MFF | Cakewalk MIDI |
| MFG | ProEngineer Manufacturing |
| MFI | Windows 98 Resource Kit |
| MFIL | Blizzard Software Update Format |
| MFJ | MOBCAL Data |
| MFK | Memsoft OS/2 Database |
| MFL | Mozilla Firefox XUL Fastload Format |
| MFM | VTeX Multiple Master Font Metrics |
| MFO | Mediaface Online CD Label Software Project Format |
| MFP | MediaFACE CD Label Software Format |
| MFPS | Scientific Calculator Plus Script |
| MFR | Autodesk Moldflow Result |
| MFS | MetFS Encrypted FUSE Based Formatsystem Format |
| MFT | Mediaface Project Template Format |
| MFU | Backdoor.Win32.Agent.mfu Virus Format |
| MFV | MobileFrame Device Pack Format |
| MFW | Motorola MSS Box Firmware Format |
| MFX | Multimedia Fusion Extension Format |
| MG | EarAche Audio |
| MG1 | MusiGenesis Project |
| MG2 | Band-in-a-Box Song |
| MG4 | Band-in-a-Box Song |
| MG9 | Band-in-a-Box Song |
| MGA | Manga Comics Document Format |
| MGB | Paragon5 Gameboy Tracker Audio |
| MGC | MGCSoft Equation Illustrator Data Format |
| MGCB | MGCSoft Equation Illustrator Project Format |
| MGD | Master Grade Gradebook |
| MGDATABASE | MacGourmet Deluxe Database Format |
| MGE | MGE Data Server Project |
| MGF | ASCII-based 3D Rendering Materials And Geometry Format |
| MGK | ImageMagick Settings Format |
| MGL | Age Of Empires II Age Of Kings Game Format |
| MGLR | Magellan Routes |
| MGLT | Magellan Tracklogs |
| MGLW | Magellan Waypoint |
| MGM | MGCSoft Equation Editor Macro File Format |
| MGMF | MindGenius Mind Map |
| MGMT | MindGenius 2-3 Template |
| MGMX | MindGenius Map Format |
| MGN | Modern Genealogy Database |
| MGO | MacGourmet Recipe Format |
| MGOURMET | Mariner MacGourmet Document Format |
| MGOURMET3 | Mariner MacGourmet Document Format |
| MGR | MGR Bitmap Image |
| MGS | MGCSoft Vector Shapes Format |
| MGSPOT | MacGourmet Metadata |
| MGT | ZX Spectrum Emulator Disk Image |
| MGTHEME | MacGourmet Theme Format |
| MGTX | MindGenius XML Template Format |
| MGU | Band-in-a-Box MIDI |
| MGV | Sony PSP Video Format |
| MGX | Micrografx Designer Drawing Format |
| MGZ | Metal Gear Solid Game Archive |
| MHD | Fallout 3 |
| MHE | MHwinEHE Project |
| MHK | Riven Movie Data |
| MHP | Mailshift Internet Mail Document |
| MHS | Xilinx Platform Studio Hardware Specification Format |
| MHT | Mime HTML (MHTML) Format |
| MHTENX | Egis Encrypted HTM |
| MHTM | Mime HTML (MHTML) |
| MHTML | Mime MHTML Format |
| MHTMLENX | Egis Encrypted MHTML |
| MHV | Husqvarna Viking Data |
| MI | AutoVue Graphic Plugin |
| MI2 | Autodesk Softimage |
| MI4 | NVidia PortalPlayer Firmware Update Format |
| MIB | MyInfo Topic Backup |
| MIC | Microsoft Image Composer Image Format |
| MID | MIDI Audio Format |
| MIDI | MIDI-sequention Sound Format |
| MIF | ImageMagick Image Format Format |
| MIFF | Magick Image |
| MIG | Windows Easy Transfer Migration Data Format |
| MIH | MRtrix Image Header |
| MII | Nintendo Wii Virtual Avatar Format |
| MIK | MapInfo MapImagery Encryption Key |
| MIL | Micro Illustrator Uncompressed Image |
| MILK | Winamp MilkDrop Plugin Configuration Format |
| MILLPST | BobCAD Post Processor Data |
| MIM | Multi-Purpose Internet Mail Extensions Format |
| MIME | Multi-Purpose Internet Mail Extensions (MIME) File Format Format (RFC822) |
| MIN | Minute Maker Format |
| MINDNODE | MindNode Document Format |
| MINE | Minecraft Map Format |
| MINESWEEPERSAVE-MS | Microsoft MineSweeper Save Format |
| MINGW32 | Mingw Compiler |
| MINI2SF | Nintendo DS Sound Information Format |
| MININCSF | NCSF Nintendo DS Audio Format |
| MINIPSF | Miniature PlayStation Sound Format |
| MINIPSF2 | Miniature PlayStation Sound Format |
| MINISO | DVDFab Miniso Disk Image |
| MINIUSF | Nintendo 64 Song Format |
| MINT | Linux Mint Installer Format |
| MIO | MIO Multimedia Format |
| MIP | Corel PaintShop Pro Multiple Image Print Format |
| MIPR | MacImage Hybrid CD-ROM Project |
| MIR | Mini Image Ripper Disk Image Format |
| MIRADI | Miradi Project |
| MIS | Mission Format |
| MISO | MacImage ISO+ Project |
| MISSION | MissionMaker Project Format |
| MIT | MineEdit Inventory Template Format |
| MIV | MapImagery Vendor Profile |
| MIX | Microsoft PhotoDraw Image |
| MIZ | Winamp Compressed Midi |
| MJ2 | JPEG 2000 Motion Sequence Format (ISO 15444-3) Format |
| MJ3 | Id Software Online Sale |
| MJBOOKTEMPLATE | MacJournal Book Template |
| MJD | Adobe Acrobat MIME Encoded Job Definition Format |
| MJDOC | MacJournal Document Format |
| MJF | Mjuice MP3 Audio |
| MJG | Trojan |
| MJP | VTech MJP Video Format |
| MJP2 | JPEG 2000 Motion Sequence Format (ISO 15444-3) |
| MJPG | Motion JPEG Video Format |
| MJR | Media Jukebox Registration |
| MJZ | Trojan.Win32.Agent.mjz |
| MK | Make Format |
| MK3D | Matroska MKV 3D Stereoscopic Video Format |
| MK4 | Schiller Medilog ECG Raw Data Format |
| MKA | Matroska Audio Format |
| MKB | Marmalade SDK Project |
| MKC | MagicKey Currency Exchange Rate |
| MKD | Markdown Markup Language |
| MKDN | Markdown Markup Language |
| MKE | Microsoft Windows SDK Make |
| MKEXT | Mac OS X Mach Kernel Extension Memory Cache |
| MKEY | CompeGPS Land Registration Key |
| MKEYB | CompeGPS Land Registration Key |
| MKH | WinMark Pro Mark |
| MKII | Mark2 SoundSystem Audio |
| MKJ | MKJamz Audio |
| MKP | Cinestar Remote Control Configuration |
| MKR | Train Simulator Marker |
| MKS | Matroska Subtitles Stream |
| MKT | Visual FoxPro Configuration |
| MKV | Matroska Video-audio Multimedia Format |
| MKV3D | Matroska 3D Video Format |
| MKY | MagicKey Configuration |
| MKZ | PokerOffice Database Backup |
| ML | ML Language Source Code Format |
| ML2 | Tripos MOL2 Molecule |
| ML20 | Mercury Messenger For Mac Video |
| ML3 | Milestones Project |
| ML4 | Milestones 4 Schedule |
| ML5 | Milestones Project |
| ML9 | Milestones Professional 2004U Schedule |
| MLA | WorshipCenter Pro Document |
| MLB | Microsoft Windows Mobile Media Library Format |
| MLC | Microsoft Windows Language Interface Pack Format |
| MLD | I-Melody Format For I-Mode |
| MLE | MAirList Event List |
| MLF | Package Download Profile |
| MLG | IBM Communications Server Message |
| MLI | F# Source Code |
| MLIB | Model Library |
| MLK | Sierra MasterCook Look Format |
| MLL | AutoDesk Maya Plug-in Format |
| MLM | Novell GroupWise Saved Email Message |
| MLN | Alchemy Source |
| MLOCATE | Gnome Desktop |
| MLP | Meridian Lossless Packing Audio Format |
| MLR | Mollier Sketcher |
| MLS | Miles Sound Tools Compressed DLS Format |
| MLSXML | Skype XML |
| MLT | Forecast Pro Multivariate Forecast |
| MLV | LabVIEW Mathscript |
| MLW | MainLog Data |
| MLX | Starcraft Saved Game |
| MLY | OCaml Ocamlyacc Input |
| MM | Apple Xcode Core Objective-C Program Source Code Format |
| MM1 | ActiveXperts MMS Toolkit Settings |
| MM3 | Mortgage Minder Saved Mortgage Configuration |
| MM4 | Microsoft Windows Word Processing Format |
| MM6 | Might And Magic 6 Saved Game Format |
| MM7 | Might And Magic 7 Saved Game Format |
| MM8 | MusicMaker V8 Audio Format |
| MMA | Master Album Maker Album Format |
| MMAP | MindManager Map Format |
| MMAS | MindManager Theme |
| MMAT | MindManager Template Format |
| MMB | MultiMedia Builder |
| MMC | Microsoft Office XP Media Content Format |
| MMCH | CodeWarrior Compiled Hdr |
| MMCOLLECTION | Microsoft Outlook Mail Manager Plug-in Collection Format |
| MMD | Mangodata Multi-user Database |
| MMDC | MediaMonkey Mobile Device Settings Format |
| MMDF | Multi-channel Memorandum Distribution Facility Mailbox Format |
| MMDL | SAPPHIRE Structure Model |
| MMDR | Adobe Director |
| MME | Multipurpose Internet Mail Extensions Format |
| MMF | Microsoft Mail Message Format |
| MMG | MKVToolNix Muxing Settings |
| MMH | Dragon Age Model Mesh Heirarchy |
| MMIP | MediaMonkey Installation Format |
| MMJS | Adobe JavaScript Document |
| MMK | MACSIMUS Define |
| MML | Adobe FrameMaker Format |
| MMM | MultiMedia Movie Format (RIFF RMMP) |
| MMN | Memory-Map Navigator Overlay Object |
| MMO | RapidFile Memo Document Format |
| MMP | MixMeister Studio Playlist Format |
| MMPA | MoreMotion Application Studio Page |
| MMPF | CodeWarrior Preference |
| MMPR | CodeWarrior Project |
| MMPZ | Linux MultiMedia Studio Project |
| MMRC | MADRIX MIDI Remote Configuration |
| MMS | Miles Sound Tools |
| MMSW | Movie Magic Screenwriter Document |
| MMT | CoCo Systems VisiMap |
| MMU | MyPM Merge Data Format |
| MMV | MicroMV Movie Format |
| MMW | AceMoney Financial Data Format |
| MMX | Command And Conquer Game |
| MMZ | MusicMatch Theme |
| MN1 | Microsoft Money Version 1 Data |
| MN2 | Descent 2 Mission |
| MN3 | Descent 3 Mission |
| MN4 | Microsoft Money 95 Data |
| MN5 | Microsoft Money 97 Data |
| MN6 | Microsoft Money 98 Data |
| MN7 | Microsoft Money 99 Data |
| MN8 | Microsoft Money 2000 Data |
| MN9 | Microsoft Money 2001 Data |
| MNB | MuPAD |
| MNC | AutoCAD Compiled Menu Format |
| MND | AutoCAD Menu Compiler |
| MNE | Microsoft Money |
| MNF | ADAMS/Flex |
| MNG | Multiple Network Graphics |
| MNH | Master Navigator Header Format |
| MNI | Star Trek Elite Force 2 Game |
| MNIT | FlashPeak SlimBrowser |
| MNK | My Notes Keeper Notebook Format |
| MNL | Autodesk AutoCAD Menu LISP Format |
| MNM | Autodesk 3D Studio Max Character Studio Marker Name Format |
| MNO | Macromedia Design Note |
| MNP | Ultrasoft Money |
| MNR | Autodesk AutoCAD Compiled Menu Format |
| MNS | AutoCAD Interface Settings Format |
| MNT | Visual FoxPro Additional Menu Description Format |
| MNU | Autodesk AutoCAD Menu Format |
| MNV | Sony PlayStation Movie Format |
| MNX | Visual FoxPro Main (DBF) Menu Description Format |
| MNY | Microsoft Money Data Format |
| MO | GNU Gettext Machine Object Format |
| MO3 | MO3 MOD Audio Format |
| MO? | Standard Mail Archive |
| MOB | MOBTV Video Format |
| MOBI | Mobipocket EBook Format |
| MOBILECONFIG | Apple IPhone Mobile Configuration Profile |
| MOBILEPROVISION | IOS Mobile Device Provisioning Profile Format |
| MOC | MOCHA Java Script |
| MOCHA | Adobe Mocha For Adobe After Effects |
| MOD | Hard Disk Camera Movie MPEG-2 Program Stream Format |
| MODD | Sony Video Analysis Format |
| MODE | Coda For Mac Plugin Format |
| MODE1V3 | Xcode Project Settings |
| MODE2V3 | Xcode Project Related |
| MODEL | CATIA V4 Model Format |
| MODELPROJ | Microsoft Visual Studio Modelling Project |
| MODULE | Drupal Module Format |
| MODUS | Adobe Mocha For Adobe After Effects Modus |
| MOF | Systems Management Server Managed Object Format |
| MOFF | Sony AVCHD Index Format |
| MOG | Football Mogul |
| MOGG | Multitrack Digital Audio Format |
| MOHO | Anime Studio Animation Project Format |
| MOI | JVC Everio Digital Audio Format |
| MOJITO | Limewire Kademlia |
| MOKEY | Adobe Mocha For Adobe After Effects Mokey |
| MOL | MDL Molfile Molecule Format |
| MOL2 | Portable Representation Of A SYBYL Molecule |
| MOLOGIQ | HTC EVO 3D |
| MOM | Managed Object Model |
| MOMMA | Offspring Fling Replay Format |
| MON | Firefox Monday Bookmark Backup |
| MONET | Adobe Mocha For Adobe After Effects Monet |
| MONEY | Money Data Format |
| MONEYWELL | MoneyWell Financial Data Format |
| MONITORPANEL | Apple Mac OS X Display Panel Extension |
| MONO | Bi-level Bitmap |
| MONTAGE | Montage Screenplay Format |
| MONTE | CRiSP Harvest |
| MOO | Apple QuickTime Movie Clip |
| MOOD | Amarok Moodbar Data |
| MOOV | Apple QuickTime Movie Format |
| MOP | MOPAC Input Format |
| MOPINT | Mopac Internal Chemical Modeller Input |
| MOPOUT | MOPAC Chemical Output |
| MOPP | Havok Engine |
| MOR | Corel Shared Writing Tools |
| MORG | Morg |
| MORSE | Ringtone Morse Code |
| MOS | Mamiya Digital Camera RAW Image Format |
| MOSAIC | MacOSaiX Mosaic Format |
| MOSS | Netscape Navigator For Mac HTML |
| MOT | LightWave Motion Format |
| MOTN | Apple Motion Motion |
| MOTOR | Adobe Mocha For Adobe After Effects Motor |
| MOU | MOU Compressed Format |
| MOV | Apple QuickTime Digital Movie Format |
| MOVIE | Apple QuickTime Movie Format |
| MOX | ExtendSim Model Format |
| MOXEL | Adobe Mocha For Adobe After Effects Moxel |
| MOZ | Netscape Temporary Cache Format |
| MOZ-BACKUP | Mozilla Backup |
| MOZ-DELETE | Mozilla Firefox Update |
| MOZ-UPGRADE | Mozilla Firefox Upgrade |
| MOZEML | Mozilla Thunderbird Mail Message |
| MP | Autodesk Maya Personal Learning Edition Format |
| MP+ | MPEG Plus Audio |
| MP1 | MPEG Audio Stream, Layer I Format |
| MP10 | NI Multisim V10 Project Format |
| MP11 | NI Multisim V11 Project Format |
| MP2 | Sound File (MPEG-1 Layer II Audio Stream) |
| MP21 | MPEG-21 Multimedia Format |
| MP2A | Sound File (MPEG-1 Layer II Audio Stream) |
| MP2M | Max Payne 2 Mod Format |
| MP2S | Max Payne 2 Saved Game Format |
| MP2V | MPEG Video Format |
| MP3 | Compressed Audio And Music File, Mp3 Songs Or Ringtones |
| MP3A | Renamed MP3 |
| MP3G | WinCDG Pro MP3+G Karaoke |
| MP4 | MPEG-4 Video File Format |
| MP4INFOVID | Parrot AR Drone And Gyro Flyer Video |
| MP4A | MPEG-4 MP4A Codec Audio |
| MP4B | MPEG-4 Audio Layer Bookmarkable |
| MP4V | MPEG-4 Video Format |
| MP5 | Maple Windows DOS |
| MP7 | NI Multisim V7 Project Format |
| MP8 | NI Multisim V8 Project |
| MP9 | NI Multisim V9 Project Format |
| MP? | LoseThos Compiler Map |
| MPA | MPEG Audio Format |
| MPB | MyPhoneExplorer Backup Format |
| MPC | MusePack Audio Format |
| MPCPL | Media Player Classics Playlist Format |