| Estensione del file | Autore/Produttore | Descrizione del file |
|---|---|---|
| Estensione M | Apple | Objective-C Language Source Format |
| Estensione M!95 | Adobe Systems Incorporated | Adobe Director For Mac |
| Estensione M-JPEG | N/A | M-JPEG |
| Estensione M01 | Bentley Systems, Incorporated | MicroStation Modification Resource |
| Estensione M10 | Microsoft Corporation | Microsoft Money 2002 Data |
| Estensione M11 | Microsoft Corporation | Microsoft Money 2003 Data |
| Estensione M12 | Schiller | Schiller Medilog ECG Raw Data Format |
| Estensione M13 | Microsoft Corporation | Microsoft Media Viewer |
| Estensione M14 | Microsoft Corporation | Microsoft Media Viewer |
| Estensione M15 | Moving Picture Experts Group | Apple QuickTime Format |
| Estensione M16 | Microsoft Corporation | Microsoft Money 2007 Data |
| Estensione M1A | N/A | MPEG-1 Audiostream Format |
| Estensione M1C | IBM | IBM Voice Type Languages Newuser |
| Estensione M1I | N/A | IBM Voice Type Languages Newuser |
| Estensione M1PG | Media 100 | IFinish Video Format |
| Estensione M1S | N/A | MPEG-1 System Stream |
| Estensione M1V | N/A | Moving Pictures Experts Group Video (MPEG-1 IPB) |
| Estensione M2 | Blizzard Entertainment | World Of Warcraft Model Object File Format |
| Estensione M21 | N/A | MPEG-21 Video Format |
| Estensione M25 | N/A | Symantec Endpoint Protection Manager |
| Estensione M2A | N/A | MPEG-2 Audio |
| Estensione M2C | IBM | IBM Voice Type Languages Newuser |
| Estensione M2D | N/A | HTC Manila 2D For Windows Mobile Skin |
| Estensione M2DCT | N/A | HTC Manila 2D For Windows Mobile Skin |
| Estensione M2F | Maxthon International Limited | Maxthon Filter Package |
| Estensione M2I | IBM | IBM Voice Type Languages Newuser |
| Estensione M2L | Maxthon International Limited | Maxthon Language Package |
| Estensione M2M | SourceForge.net | TiMidity++ M2M Settings |
| Estensione M2P | Moving Picture Experts Group | MPEG-2 Stream File Format |
| Estensione M2R | N/A | Avaya Mib2Rules Perl Script |
| Estensione M2S | Maxthon | Maxthon Skin Installation Package |
| Estensione M2T | N/A | MPEG-2 Transport Stream Format |
| Estensione M2TS | Sony | MPEG-2 Stream (Blu-Ray) |
| Estensione M2U | Maxthon International Limited | Maxthon Layout |
| Estensione M2V | N/A | MPEG-2 Packetized Elementary Stream |
| Estensione M3 | Blizzard Entertainment | Blizzard StarCraft 2 MDX3 Model Format |
| Estensione M32 | 3D Realms/Apogee Software Ltd. | Duke Nukem 3D Script |
| Estensione M3C | IBM | IBM Voice Type Languages Newuser |
| Estensione M3D | N/A | DIALux 3D Object Format |
| Estensione M3G | Nokia | Nokia Mobile 3D Graphics Program Format |
| Estensione M3H | Blizzard Entertainment, Inc. | Starcraft 2 Model Data |
| Estensione M3I | IBM | IBM Voice Type Languages Newuser |
| Estensione M3S | Ubisoft Entertainment S.A. | Myst III Exile Saved Game |
| Estensione M3T | Ubisoft Entertainment S.A. | Myst 3 Exile Text |
| Estensione M3U | Nullsoft | MP3 Songs Playlist Format |
| Estensione M3U8 | N/A | UTF-8 M3U Playlist Format |
| Estensione M3URL | N/A | SMIL MP3 Playlist |
| Estensione M3V | N/A | DJ Mix Pro Playlist |
| Estensione M3X | MAGIX AG | MAGIX Digital Photo Maker PhotoCD Playlist |
| Estensione M4 | N/A | M4 Preprocessor Macro Format |
| Estensione M4A | Apple | MPEG-4 Compressed Audio Format |
| Estensione M4B | Apple | MPEG-4 Audio Layer Audio Book Format |
| Estensione M4C | IBM | IBM Voice Type Language Newuser |
| Estensione M4D | The Sage Group plc | Sage MAS 90 Data |
| Estensione M4E | N/A | MPEG-4 Video Format |
| Estensione M4F | Sony Corporation | Sony Network Camera MPEG-4 Video |
| Estensione M4I | IBM | IBM Voice Type Languages Newuser |
| Estensione M4L | The Sage Group plc | Sage MAS 90 Data |
| Estensione M4P | Apple | Apple ITunes Music Store Audio Format |
| Estensione M4R | Apple | Apple IPhone Ringtone Format |
| Estensione M4S | Ubisoft Entertainment S.A. | Myst IV: Revelation Save Game |
| Estensione M4T | The Sage Group plc | Sage MAS 90 Table |
| Estensione M4U | N/A | MPEG-4 Playlist Format |
| Estensione M4V | Apple | MPEG-4 Video File Format |
| Estensione M51 | ARM Holdings plc | ARM Keil Tools Linker Listing |
| Estensione M64 | N/A | Mupen64 Movie Capture |
| Estensione M68 | Embarcadero Technologies, Inc. | Turbo Pascal DOS |
| Estensione M75 | Moving Picture Experts Group | Apple QuickTime Player Format |
| Estensione M7A | MapKing International Limited | MapKing Map |
| Estensione M7D | MapKing International Limited | MapKing Navigation Map |
| Estensione M7P | N/A | Multilizer PDF Translator Project |
| Estensione M8 | Raven Software | Heretic II MipMap Image |
| Estensione M?? | Actian Corporation | Ingres Modify Table/Index |
| Estensione MA | Autodesk | Autodesk Maya ASCII Scene Format |
| Estensione MA0 | Blizzard Entertainment, Inc. | Diablo II Act 1 Saved Map Progress |
| Estensione MA1 | Monarch | Monarch Audio Format |
| Estensione MA1MMF | N/A | SMAF Synthetic Music Mobile Application Format |
| Estensione MA2 | Olle Persson | Bibexcel |
| Estensione MA2MMF | Yamaha Corporation | SMAF Synthetic Music Mobile Application Format |
| Estensione MA3 | Harvard Graphics | Harvard Graphics Macro |
| Estensione MAB | Mozilla | Mozilla Address Book Format |
| Estensione MAC | Apple | MacPaint Bitmap Image |
| Estensione MACA | Apple, Inc. | MacWrite Document |
| Estensione MACBIN | Apple | MacBinary Archive |
| Estensione MACP | Apple, Inc. | Apple Macintosh MacPaint Bitmap Image |
| Estensione MACS | inoage GmbH | MADRIX Encrypted Script |
| Estensione MAD | N/A | Microsoft Access Module Shortcut Format |
| Estensione MAE | My Avatar Editor | My Avatar Editor Character Format |
| Estensione MAF | Microsoft | Microsoft Access Form Shortcut Format |
| Estensione MAFF | Mozilla | Mozilla Archive Format |
| Estensione MAG | Microsoft | Microsoft Access Diagram Shortcut Format |
| Estensione MAGIC | SourceForge.net | Magic Mail Monitor Configuration |
| Estensione MAGIK | GE | Magik Source Code Format |
| Estensione MAHJONGTITANSSAVE-MS | Microsoft | Mahjong Titans Save Game Format |
| Estensione MAI | Microsoft | Microsoft Mail Message Format |
| Estensione MAILDB | N/A | MSN Mail |
| Estensione MAILHOST | Microsoft | E-mail Server Preferences Format |
| Estensione MAILLOC | Apple, Inc. | Apple Mac OS X Finder Mail Internet Location |
| Estensione MAILPLANELICENSE | uncomplex | Mailplane License Format |
| Estensione MAILSTATIONERY | Apple, Inc. | Apple Mail |
| Estensione MAILTOLOC | Apple | Apple Mail Mail Address Format |
| Estensione MAIN | FileMaker, Inc. | FileMaker Dictionary |
| Estensione MAJ | Autodesk, Inc. | Camduct Job |
| Estensione MAK | N/A | Make Format |
| Estensione MAKE | Apple | Makefile |
| Estensione MAKEFILE | N/A | Makefile |
| Estensione MAKER | Adobe Systems Incorporated | Adobe Framemaker |
| Estensione MAKI | Nullsoft, Inc. | Winamp MAKI Compiled Script |
| Estensione MAKO | Mako | Mako Tamplate Format |
| Estensione MAL | MadAppLauncher | MadAppLauncher Settings Format |
| Estensione MAM | Microsoft | Microsoft Access Macro Shortcut Format |
| Estensione MAML | Microsoft Corporation | Microsoft Assistance Markup Language |
| Estensione MAN | N/A | Unix Text Manual Format |
| Estensione MANAGED_MANIFEST | Microsoft Corporation | Silverlight Manifest |
| Estensione MANI | Mine-imator | Mine-imator Project Format |
| Estensione MANIFEST | N/A | Windows Visual Styles Format |
| Estensione MANIFEST-DESKTOP | Canonical Ltd. | Ubuntu Desktop CD Manifest |
| Estensione MANM | Pterodon | Vietcong Game Data Format |
| Estensione MAO | BioWare | Dragon Age Origins MAO XML |
| Estensione MAP | id Software | Game Map Format |
| Estensione MAPIMAIL | N/A | Windows Send To Mail Recipient Format |
| Estensione MAPLET | Blitz Research | Maplet World Format |
| Estensione MAPLIB | Hewlett-Packard Company | Mscape Map |
| Estensione MAPSDATA | Apple | Apple IOS Map Data Format |
| Estensione MAPX | Mapjects Development | Mapjects GRYD Webserver Format |
| Estensione MAQ | Microsoft | Microsoft Access Query Shortcut Format |
| Estensione MAR | Microsoft | Microsoft Access Report Shortcut Format |
| Estensione MARC | MarcEdit Development | MAchine-Readable Cataloging (MARC) Document |
| Estensione MARKDN | John Gruber | Markdown Markup Language Document Format |
| Estensione MARKDOWN | John Gruber | Markdown Markup Language Format |
| Estensione MARS | Adobe Systems | Adobe Mars Format |
| Estensione MARSHAL | RISE to Bloome Software | Marshal Editor Data Migration Model Format |
| Estensione MART | MartView | Martview Ebook Format |
| Estensione MAS | N/A | Microsoft Access Stored Procedures Format |
| Estensione MASH | Oracle Corporation | Java |
| Estensione MASK | Adobe Systems | SpeedGrade Color Mask Format |
| Estensione MASSEFFECTPROFILE | Electronic Arts | Mass Effect User Profile |
| Estensione MASSEFFECTSAVE | Electronic Arts | Mass Effect Saved Game |
| Estensione MASTER | Microsoft | ASP Master Page Format |
| Estensione MAT | The MathWorks | MATlab Workspace Variables Format |
| Estensione MATCH-RDB | Richard Hughey - Kevin Karplus - Anders Krogh | RDB |
| Estensione MATERIAL | N/A | Rigs Of Rods Texture Reference Format |
| Estensione MATH | Paul Hunter | AnalyticMath |
| Estensione MATLAB | N/A | Matlab Script |
| Estensione MATO | Mojiferous Industries | Atomic Combat Saved Game Format |
| Estensione MATPROJ | BioWare | Dragon Age Origins Material |
| Estensione MAU | N/A | Media Attachment Unit Format |
| Estensione MAUD | N/A | Amiga MAUD Sound |
| Estensione MAV | N/A | Microsoft Access View Format |
| Estensione MAW | N/A | Microsoft Access Data Access Page Format |
| Estensione MAX | Autodesk | 3D Studio Max Scene Format |
| Estensione MAXC | Autodesk | 3D Studio Max Container Format |
| Estensione MAXD | N/A | PaperPort Annotation |
| Estensione MAXM | N/A | Paperport |
| Estensione MAZ | Hover | Microsoft Windows Hover! Maze Format |
| Estensione MB | Autodesk | Autodesk Maya Binary Scene Format |
| Estensione MB1 | 3D Realms/Apogee Software Ltd. | Monster Bash Game Data |
| Estensione MB3 | SUIGYODO ONLINE | Minimal Board Editor (MBE) |
| Estensione MB4 | Evan Design | Model Builder Model Design |
| Estensione MBA | Beneficent Technology, Inc. | Martus Human Rights Bulletin System |
| Estensione MBAC | HI CORPORATION | MascotCapsule Resource |
| Estensione MBAS | MikroElektronika | MikroBasic Source Code |
| Estensione MBB | Kodak | Kodak EasyShare Data Format |
| Estensione MBBK | ManaBook Software | ManaBook Book Kit Format |
| Estensione MBC | Cyrus Daboo | Mulberry E-mail Client Cache |
| Estensione MBD | MediaChance | Multimedia Builder MP3 Authoring Format |
| Estensione MBDB | Apple, Inc. | Apple IOS Backup Manifest |
| Estensione MBDX | Apple, Inc. | Apple IOS Backup Manifest |
| Estensione MBE | Electronic Arts, Inc. | MVP Baseball 2005 Game |
| Estensione MBF | Microsoft | Microsoft Money Backup Format |
| Estensione MBFAVS | N/A | Stardent AVS X Bitmap Image |
| Estensione MBFS | N/A | Stardent AVS X Bitmap Image |
| Estensione MBFX | N/A | AVS X Image |
| Estensione MBG | Fookes | Mailbag Assistant E-mail Archive Format |
| Estensione MBI | MagicISO | MagicISO Multi-bootable Information Format |
| Estensione MBK | dataBased Intelligence | DBASE IV Multiple Index File Backup |
| Estensione MBKP | Memeo | Memeo Instant Backup Backup |
| Estensione MBL | Vernier | Logger Pro Experiment Data Format |
| Estensione MBM | N/A | EPOC Multi-bitmap Format |
| Estensione MBOX | N/A | Mail Mailbox Format |
| Estensione MBP | Mobipocket | Mobipocket EBook Auxiliary Format |
| Estensione MBP1 | Amazon.com, Inc. | Kindle Touch Annotation |
| Estensione MBR | N/A | Master Boot Record Format |
| Estensione MBS | Opera Software | Opera Mailbox Format |
| Estensione MBSA | Microsoft | Microsoft Baseline Security Analyzer Format |
| Estensione MBSB | Mamut Software Ltd | Mamut Business Software Company Database Backup |
| Estensione MBSYNCSTATE | Michael R. Elkins | Mbsync Folder Backup |
| Estensione MBT | Scout Management Software | Blue Card Manager Merit Badge Template Format |
| Estensione MBTEMMPLATE | Widget Press, Inc. | ModelBaker Custom Template Directory |
| Estensione MBV | Victor Company of Japan, Ltd. | JVC Everio MediaBrowser Movie |
| Estensione MBW | Firesage Solutions | Easy Mail Backup Wizard Format |
| Estensione MBX | N/A | E-mail Mailbox Format |
| Estensione MBZ | N/A | Pogoshell NES Emulator Plugin |
| Estensione MC | Microsoft Corporation | Microsoft Windows Localized Message Table Resource |
| Estensione MC1 | MedCalc | MedCalc Data Format |
| Estensione MC2 | ValuSoft | MasterCook Cookbook Recipe Text Data Format |
| Estensione MC3 | Interactive Design Systems | Bridge Design Modeler 3D Match-casting Geometry Control |
| Estensione MC4D | MAXON Computer GmbH | Cinema 4D 3D Graphic |
| Estensione MC5 | Smith Micro | Poser 5 Material Format |
| Estensione MC6 | Smith Micro | Poser 6 Material Format |
| Estensione MC8 | CNC Software, Inc. | Mastercam V8 |
| Estensione MC9 | CNC | Mastercam V9 CAD Format |
| Estensione MCA | Mojang | Minecraft Anvil Format |
| Estensione MCACC | Pioneer Europe NV | MCACC Measurement Data |
| Estensione MCB | N/A | NEPLAN Project |
| Estensione MCBN | N/A | Microsoft Excel 4 For Mac Chart |
| Estensione MCC | Parametric Technology Corporation | Mathcad Configuration |
| Estensione MCD | PTC | MathCAD Document Format |
| Estensione MCDB | Adobe Systems Incorporated | Adobe Premiere Pro Media Cache Database |
| Estensione MCDX | PTC | Mathcad Prime Document Format |
| Estensione MCF | ValuSoft | MasterCook Cookbook Format |
| Estensione MCFI | Autodesk | Autodesk Maya Initial Fluid Cache Format |
| Estensione MCFP | Autodesk | Autodesk Maya Fluid Cache Playback Format |
| Estensione MCGAME | Minecraft Launcher | Minecraft Backup Format |
| Estensione MCI | N/A | Media Control Interface Command Script Format |
| Estensione MCK | NewSoftwares.net, Inc. | Macro Keys Encrypted Macro |
| Estensione MCL | Microsoft | Microsoft Media Center Application Shortcut Format |
| Estensione MCLEVEL | Mojang Specifications | Minecraft Map Format |
| Estensione MCMAC | Mariner Software, Inc. | MacGourmet MasterCook Document |
| Estensione MCMETA | Mojang | Minecraft Animation Settings Format |
| Estensione MCML | Microsoft Corporation | Microsoft Windows Media Center MCML |
| Estensione MCO | Microsoft | MSN Messenger Wink Format |
| Estensione MCP | Freescale Semiconductor | CodeWarrior Project Format |
| Estensione MCR | Autodesk | Autodesk 3D Studio Max Macroscript Format |
| Estensione MCRP | Bermin Software | MobyExplorer Encrypted Format |
| Estensione MCS | Mathsoft | MathCAD Raster Picture Image Format |
| Estensione MCSP | Crafting.co.uk | My Craft Studio Project Format |
| Estensione MCSX | Crafting.co.uk | My Craft Studio Professional Format |
| Estensione MCT | N/A | Musicator MIDI |
| Estensione MCUSW | Nokia Corporation | Nokia Mobile Phones With Symbian Firmware |
| Estensione MCV | N/A | ManyCam Effect |
| Estensione MCW | Hex2Bit | Monitor Calibration Wizard Format |
| Estensione MCWORLD | Minecraft Launcher | Minecraft World Backup Format |
| Estensione MCX | CNC Software | Mastercam X And X2 File Format |
| Estensione MCXE | Clinical & Biomedical Computing | MedicinesComplete Data Format |
| Estensione MCXML | Microsoft Corporation | Microsoft Office 2013 XML Settings |
| Estensione MCZ | Smith Micro | Poser Compressed Material Format |
| Estensione MD | Reilly Technologies | Moneydance Financial Data Format |
| Estensione MD0 | Alcohol Software | Alcohol 120% Disk Image Segment Format |
| Estensione MD03 | Adobe Systems Incorporated | Adobe Director |
| Estensione MD1 | N/A | GEAR CD Suite CD Image Format |
| Estensione MD2 | id Software | Quake 2 Model Format |
| Estensione MD2P | Matt Holwood | MessengerDiscovery |
| Estensione MD2S | Matt Holwood | MessengerDiscovery |
| Estensione MD3 | id Software | Quake 3 Model Format |
| Estensione MD4 | id Software LLC | Quake 3 MD4 Skeletal Model Format |
| Estensione MD5 | N/A | Checksum Format |
| Estensione MD5TXT | N/A | Message Digest 5 Hash Format |
| Estensione MD5ANIM | id Software | Doom 3 ID Tech 4 Game Engine Model Animation Format |
| Estensione MD5CAMERA | id Software | Doom 3 ID Tech 4 Game Engine Model Camera Format |
| Estensione MD5MESH | id Software | Doom 3 ID Tech 4 Game Engine 3D Mesh Format |
| Estensione MD8 | GarageCUBE | GarageCUBE Modul8 Project Format |
| Estensione MDA | N/A | Microsoft Access Add-in Format |
| Estensione MDAT | John Mulcahy | REW Measurement |
| Estensione MDB | Microsoft | Microsoft Access Database Format |
| Estensione MDBACKUP | Apple | Apple IPhone Backup Format |
| Estensione MDBHTML | Microsoft | Microsoft Office Access HTML Document Format |
| Estensione MDBX | N/A | Access Based Database |
| Estensione MDC | Cognos | Cognons Powerplay Power Cube Database Format |
| Estensione MDD | Point Oven | Point Oven Deformation Data Format |
| Estensione MDDATA | Apple | Apple IPhone Backup Data Format |
| Estensione MDE | N/A | Microsoft Access Compiled Database (application) Format |
| Estensione MDES | Trimaran Team | Trimaran Machine Description |
| Estensione MDF | Alcohol Software | Alcohol 120% Disc Image File Format |
| Estensione MDG | Sparx Systems Pty Ltd. | Enterprise Architect |
| Estensione MDHTML | Microsoft Corporation | Microsoft Access HTML |
| Estensione MDI | Microsoft | Microsoft Office Document Imaging File Format |
| Estensione MDIMPORTER | Apple, Inc. | Spotlight Importer Setting |
| Estensione MDINFO | Apple | Apple IPhone Info Format |
| Estensione MDK | Ad Astra Information Systems, LLC | Astra Schedule Schedule |
| Estensione MDL | Blizzard Entertainment | 3D GameStudio Model Entity Format |
| Estensione MDLE | N/A | Motion Description Language Extended |
| Estensione MDM | Scientific Software International | HLM Multivariate Data Matrix Format |
| Estensione MDMP | Microsoft | Microsoft Windows Minidump Format |
| Estensione MDN | N/A | Microsoft Access Blank Database Template Format |
| Estensione MDO | Alcohol Soft | Alcohol 120% Split Image |
| Estensione MDOWN | John Gruber | Markdown Markup Language Format |
| Estensione MDP | Microsoft | Microsoft Visual C++ Visual J++ MAK File (old Project Workspace) |
| Estensione MDPF | Apple, Inc. | Mac OS X Modem Preferences |
| Estensione MDPL | Apple, Inc. | MacDraw II |
| Estensione MDR | N/A | ZX Spectrum Microdrive Emulator |
| Estensione MDRC | inoage GmbH | MADRIX DMX Remote Configuration |
| Estensione MDRW | Apple, Inc. | MacDraw |
| Estensione MDS | N/A | Alcohol 120% Image File (media Descriptor File) Format |
| Estensione MDT | N/A | Microsoft Access Database Template Format |
| Estensione MDTEXT | John Gruber | Markdown Markup Language |
| Estensione MDTXT | John Gruber | Markdown Markup Language |
| Estensione MDUS | Matt Holwood | MessengerDiscovery |
| Estensione MDV | N/A | QLAY |
| Estensione MDW | N/A | Microsoft Access Workgroup Information Format |
| Estensione MDWN | John Gruber | Markdown Markup Language |
| Estensione MDX | Blizzard Entertainment | Blizzard Entertainment 3D Model Format |
| Estensione MDZ | N/A | Microsoft Access Wizard Template Format |
| Estensione MDZIP | No Magic | MagicDraw Compressed Project Format |
| Estensione ME | N/A | Readme Text Format |
| Estensione ME2HEADMORPH | BioWare | Mass Effect 2 Head Morph |
| Estensione ME2MOD | N/A | Mass Effect 2 Game Modification Format |
| Estensione MEA | Malvern Instruments Ltd. | Mastersizer 2000 Sample Analysis |
| Estensione MEB | Ecru Software | PRO100 Library Format |
| Estensione MECH | Parametric Technology Corporation | Pro/MECHANICA Settings |
| Estensione MECONTACT | Microsoft Corporation | Microsoft Live Messenger |
| Estensione MED | N/A | Amiga MED Sound Format |
| Estensione MEDIAWIKI | N/A | Mediawiki Source |
| Estensione MEF | Mamiya | Mamiya ZD MEF Image Format |
| Estensione MEG | MEGA Team | MEGA Data Format |
| Estensione MEGA | Megacubo | Megacubo Metafile |
| Estensione MEL | Autodesk | Maya Embedded Language |
| Estensione MELL | RedleX | RedleX Mellel Document Format |
| Estensione MELLEL | RedleX | RedleX Mellel Document Format |
| Estensione MEM | N/A | Corel WordPerfect Macro Editor Format |
| Estensione MEMB | Parametric Technology Corporation | Pro/ENGINEER Temporary |
| Estensione MEN | SoftCafe | MenuPro Restaurant Menu Design |
| Estensione MENC | Microsoft | Microsoft Windows Mobile Encrypted Format |
| Estensione MENU | id Software | Apple Mac OS X SystemUIServer MenuExtra Plugin Format |
| Estensione MENUDATA | VMware, Inc. | VMWare Cache |
| Estensione MEO | NCH Software | MEO Encrypted Format |
| Estensione MEQ | Corel Corporation | Corel WordPerfect Macro Editor Print Queue |
| Estensione MER | Rockwell Automation | Corel WordPerfect Macro Editor Resident Area Format |
| Estensione MERLIN2 | ProjectWizards | Merlin Project Format |
| Estensione MERLINLICENSE | ProjectWizards | Merlin License Format |
| Estensione MES | Corel Corporation | Corel WordPerfect Macro Editor Work Space |
| Estensione MESA | SGI | OpenGL GLUT |
| Estensione MESH | Medit | 3D Graphic Format |
| Estensione MET | eMule | EMule Cached Information Format |
| Estensione META | RealNetworks | RealPlayer Metafile |
| Estensione META4 | N/A | Metalink 4.0 |
| Estensione METADATA_NEVER_INDEX | Apple | Spotlight Never Index Format |
| Estensione METALINK | N/A | Metalink 3.0 |
| Estensione METASTOCK | Thomson Reuters | Metastock Data |
| Estensione METRICLOG | Apple, Inc. | Apple IOS Diagnostic |
| Estensione MEU | Microsoft Corporation | DOS Shell Menu Group |
| Estensione MEW | Multi Edit Software Incorporated. | MultiEdit Configuration |
| Estensione MEX | Insight Software Solutions | Corel WordPerfect Macro Editor Expound Format |
| Estensione MEX4 | MathWorks, Inc. | Sun-4/SPARC Dynamically Linked Subroutines |
| Estensione MEXDS | MathWorks, Inc. | MATlab Dynamically Linked Subroutines |
| Estensione MEXHP3 | MathWorks, Inc. | Matlab HP9000/series 300 Dynamically Linked Subroutines |
| Estensione MEXHP7 | MathWorks, Inc. | Matlab HP9000/series 700 Dynamically Linked Subroutines |
| Estensione MEXN | MathWorks, Inc. | Matlab NeXT Dynamically Linked Subroutines |
| Estensione MEXRS6 | MathWorks, Inc. | Matlab IBM RS/6000 Dynamically Linked Subroutines |
| Estensione MEXSG | MathWorks, Inc. | Matlab Dynamically Linked Subroutine |
| Estensione MEXW32 | MathWorks, Inc. | MATlab Program Executable |
| Estensione MF | Sun Microsystems | Java Manifest Format |
| Estensione MF2 | Adobe Systems Incorporated | Authorware Mediator5 Multimedia |
| Estensione MF4 | Vector Informatik GmbH | Version 4.0 Measurement Data Format |
| Estensione MFA | Clickteam | Multimedia Fusion Development Format |
| Estensione MFALIST | Ashampoo GmbH & Co. KG | Ashampoo Photo Commander Slideshow List |
| Estensione MFASL | AOL Inc. | Netscape XUL Fastload Format |
| Estensione MFCRIBBON-MS | Microsoft | MFC Ribbon Definition XML Format |
| Estensione MFD | Adobe Systems Incorporated | Adobe Multiple Master Font Metrics Directory |
| Estensione MFE | MobileFrame | MobileFrame Enterprise Data Format |
| Estensione MFF | N/A | Cakewalk MIDI |
| Estensione MFG | Parametric Technology Corporation | ProEngineer Manufacturing |
| Estensione MFI | Microsoft Corporation | Windows 98 Resource Kit |
| Estensione MFIL | Blizzard Entertainment | Blizzard Software Update Format |
| Estensione MFJ | Jarrold Group - Physical and Analytical Chemistry | MOBCAL Data |
| Estensione MFK | N/A | Memsoft OS/2 Database |
| Estensione MFL | Mozilla | Mozilla Firefox XUL Fastload Format |
| Estensione MFM | MicroPress Inc. | VTeX Multiple Master Font Metrics |
| Estensione MFO | Perl | Perl ModInfo Descriptor Format |
| Estensione MFP | Adobe Systems | Macromedia FlashPaper Document Format |
| Estensione MFPS | CYZSoft | Scientific Calculator Plus Script |
| Estensione MFR | Autodesk, Inc. | Autodesk Moldflow Result |
| Estensione MFS | EnderUNIX | MetFS Encrypted FUSE Based Formatsystem Format |
| Estensione MFT | Neato | Mediaface Project Template Format |
| Estensione MFU | MobileFrame | MobileFrame Update Format |
| Estensione MFV | MobileFrame | MobileFrame Device Pack Format |
| Estensione MFW | MobileFrame | Motorola MSS Box Firmware Format |
| Estensione MFX | Clickteam | Multimedia Fusion Extension Format |
| Estensione MG | N/A | EarAche Audio |
| Estensione MG1 | Kenneth Adams | MusiGenesis Project |
| Estensione MG2 | PG Music Inc. | Band-in-a-Box Song |
| Estensione MG4 | PG Music Inc. | Band-in-a-Box Song |
| Estensione MG9 | PG Music Inc. | Band-in-a-Box Song |
| Estensione MGA | Manga Reader | Manga Comics Document Format |
| Estensione MGB | N/A | Paragon5 Gameboy Tracker Audio |
| Estensione MGC | N/A | MGCSoft Equation Illustrator Data Format |
| Estensione MGCB | MGCSoft | MGCSoft Equation Illustrator Project Format |
| Estensione MGD | Maxium Developments | Master Grade Gradebook |
| Estensione MGDATABASE | Mariner Software | MacGourmet Deluxe Database Format |
| Estensione MGE | N/A | MGE Data Server Project |
| Estensione MGF | Lawrence Berkeley National Laboratory | ASCII-based 3D Rendering Materials And Geometry Format |
| Estensione MGK | ImageMagick Studios | ImageMagick Settings Format |
| Estensione MGL | Microsoft | Age Of Empires II Age Of Kings Game Format |
| Estensione MGLR | GeoVisu Development Team | Magellan Routes |
| Estensione MGLT | GeoVisu Development Team | Magellan Tracklogs |
| Estensione MGLW | GeoVisu Development Team | Magellan Waypoint |
| Estensione MGM | N/A | MGCSoft Equation Editor Macro File Format |
| Estensione MGMF | MindGenius | MindGenius Mind Map |
| Estensione MGMT | MindGenius | MindGenius 2-3 Template |
| Estensione MGMX | MindGenius | MindGenius Map Format |
| Estensione MGN | N/A | Modern Genealogy Database |
| Estensione MGO | Mariner Software | MacGourmet Recipe Format |
| Estensione MGOURMET | Mariner Software | MacGourmet Deluxe Document |
| Estensione MGOURMET3 | Mariner Software | Mariner MacGourmet Document Format |
| Estensione MGR | N/A | MGR Bitmap Image |
| Estensione MGS | MGCSoft | MGCSoft Vector Shapes Format |
| Estensione MGSPOT | Mariner Software, Inc. | MacGourmet Metadata |
| Estensione MGT | Musicnotes | Guitar Guru Song Format |
| Estensione MGTHEME | Mariner Software | MacGourmet Theme Format |
| Estensione MGTX | MindGenius | MindGenius XML Template Format |
| Estensione MGU | PG Music Inc. | Band-in-a-Box MIDI |
| Estensione MGV | Sony | Sony PSP Video Format |
| Estensione MGX | Microsoft | Age Of Empires 2 Replay Format |
| Estensione MGZ | Konami Corporation | Metal Gear Solid Game Archive |
| Estensione MHD | Bethesda Softworks LLC | Fallout 3 |
| Estensione MHE | Procedimientos-Uno, S.L. | MHwinEHE Project |
| Estensione MHK | Brøderbund Software, Inc. | Riven Movie Data |
| Estensione MHP | N/A | Mailshift Internet Mail Document |
| Estensione MHS | N/A | Xilinx Platform Studio Hardware Specification Format |
| Estensione MHT | N/A | Mime HTML (MHTML) Format |
| Estensione MHTENX | Egis Technology Inc. | Egis Encrypted HTM |
| Estensione MHTM | N/A | Mime HTML (MHTML) |
| Estensione MHTML | N/A | Mime MHTML Format |
| Estensione MHTMLENX | Egis Technology Inc. | Egis Encrypted MHTML |
| Estensione MHV | Husqvarna Viking | Husqvarna Viking Data |
| Estensione MI | Oracle Corporation | AutoVue Graphic Plugin |
| Estensione MI2 | Autodesk, Inc. | Autodesk Softimage |
| Estensione MI4 | NVIDIA | NVidia PortalPlayer Firmware Update Format |
| Estensione MIB | Milenix Software Ltd. | MyInfo Topic Backup |
| Estensione MIC | Microsoft | Microsoft Image Composer Image Format |
| Estensione MID | N/A | MIDI Audio Format |
| Estensione MIDI | N/A | MIDI-sequention Sound Format |
| Estensione MIF | Adobe Systems | MapInfo Interchange Format |
| Estensione MIFF | ImageMagick Studio LLC | Magick Image |
| Estensione MIG | Microsoft | Windows Easy Transfer Migration Data Format |
| Estensione MIH | Brain Research Institute | MRtrix Image Header |
| Estensione MII | Nintendo | Nintendo Wii Virtual Avatar Format |
| Estensione MIK | Pitney Bowes Software Inc. (MapInfo) | MapInfo MapImagery Encryption Key |
| Estensione MIL | N/A | Micro Illustrator Uncompressed Image |
| Estensione MILK | Nullsoft | Winamp MilkDrop Plugin Configuration Format |
| Estensione MILLPST | BobCAD-CAM Inc. | BobCAD Post Processor Data |
| Estensione MIM | Internet Engineering Task Force | Multi-Purpose Internet Mail Extensions Format |
| Estensione MIME | The Internet Engineering Task Force | Multi-Purpose Internet Mail Extensions (MIME) File Format Format (RFC822) |
| Estensione MIN | Okuma | Okuma CNC Program Format |
| Estensione MINDNODE | Markus Müller | MindNode Document Format |
| Estensione MINE | Mojang Specifications | Minecraft Map Format |
| Estensione MINESWEEPERSAVE-MS | Microsoft | Microsoft MineSweeper Save Format |
| Estensione MINGW32 | MinGW.org | Mingw Compiler |
| Estensione MINI2SF | N/A | Nintendo DS Sound Information Format |
| Estensione MININCSF | Naram Qashat | NCSF Nintendo DS Audio Format |
| Estensione MINIPSF | N/A | Miniature PlayStation Sound Format |
| Estensione MINIPSF2 | N/A | Miniature PlayStation Sound Format |
| Estensione MINISO | Fengtao Software Inc. | DVDFab Miniso Disk Image |
| Estensione MINIUSF | N/A | Nintendo 64 Song Format |
| Estensione MINT | Linux Mint | Linux Mint Installer Format |
| Estensione MIO | Mioplanet Technologies | MIO Multimedia Format |
| Estensione MIP | Corel | Corel PaintShop Pro Multiple Image Print Format |
| Estensione MIPR | Logiciels & Services Duhem | MacImage Hybrid CD-ROM Project |
| Estensione MIR | Mini-Image Ripper | Mini Image Ripper Disk Image Format |
| Estensione MIRADI | Benetech Initiative | Miradi Project |
| Estensione MIS | N/A | Mission Format |
| Estensione MISO | Logiciels & Services Duhem | MacImage ISO+ Project |
| Estensione MISSION | Immersive Education | MissionMaker Project Format |
| Estensione MIT | MineEdit | MineEdit Inventory Template Format |
| Estensione MIV | MapImagery Pty Ltd. | MapImagery Vendor Profile |
| Estensione MIX | Microsoft | Microsoft PhotoDraw Image |
| Estensione MIZ | N/A | Winamp Compressed Midi |
| Estensione MJ2 | N/A | JPEG 2000 Motion Sequence Format (ISO 15444-3) Format |
| Estensione MJ3 | id Software LLC | Id Software Online Sale |
| Estensione MJBOOKTEMPLATE | Mariner Software, Inc. | MacJournal Book Template |
| Estensione MJD | Adobe Systems | Adobe Acrobat MIME Encoded Job Definition Format |
| Estensione MJDOC | Mariner Software | MacJournal Document Format |
| Estensione MJF | N/A | Mjuice MP3 Audio |
| Estensione MJG | N/A | Trojan |
| Estensione MJP | LG | VTech MJP Video Format |
| Estensione MJP2 | N/A | JPEG 2000 Motion Sequence Format (ISO 15444-3) |
| Estensione MJPG | N/A | Motion JPEG Video Format |
| Estensione MJR | J. River, Inc. | Media Jukebox Registration |
| Estensione MJZ | N/A | Trojan.Win32.Agent.mjz |
| Estensione MK | N/A | Makefile Format |
| Estensione MK3D | Matroska | Matroska MKV 3D Stereoscopic Video Format |
| Estensione MK4 | Schiller | Schiller Medilog ECG Raw Data Format |
| Estensione MKA | Matroska | Matroska Audio Format |
| Estensione MKB | Ideaworks3D Limited | Marmalade SDK Project |
| Estensione MKC | Advanced Computer Innovations, Inc. | MagicKey Currency Exchange Rate |
| Estensione MKD | John Gruber | Markdown Markup Language |
| Estensione MKDN | John Gruber | Markdown Markup Language |
| Estensione MKE | Microsoft Corporation | Microsoft Windows SDK Make |
| Estensione MKEXT | Apple, Inc. | Mac OS X Mach Kernel Extension Memory Cache |
| Estensione MKEY | CompeGPS TEAM S.L. | CompeGPS Land Registration Key |
| Estensione MKEYB | CompeGPS TEAM S.L. | CompeGPS Land Registration Key |
| Estensione MKH | N/A | WinMark Pro Mark |
| Estensione MKII | Cloanto Italia srl | Mark2 SoundSystem Audio |
| Estensione MKJ | N/A | MKJamz Audio |
| Estensione MKP | N/A | Cinestar Remote Control Configuration |
| Estensione MKR | Microsoft Corporation | Train Simulator Marker |
| Estensione MKS | Advanced Computer Innovations, Inc. | MagicKey SmartType Settings |
| Estensione MKT | Microsoft Corporation | Visual FoxPro Configuration |
| Estensione MKV | Matroska | Matroska Video-audio Multimedia Format |
| Estensione MKV3D | N/A | Matroska 3D Video Format |
| Estensione MKY | Advanced Computer Innovations, Inc. | MagicKey Configuration |
| Estensione MKZ | PokerOffice.com | PokerOffice Database Backup |
| Estensione ML | Robin Milner | ML Language Source Code Format |
| Estensione ML2 | Hypercube, Inc. | Tripos MOL2 Molecule |
| Estensione ML20 | N/A | Mercury Messenger For Mac Video |
| Estensione ML3 | KIDASA Software, Inc. | Milestones Project |
| Estensione ML4 | KIDASA Software, Inc. | Milestones 4 Schedule |
| Estensione ML5 | N/A | Milestones Project |
| Estensione ML9 | N/A | Milestones Professional 2004U Schedule |
| Estensione MLA | WorshipCenter Software | WorshipCenter Pro Document |
| Estensione MLB | Microsoft | FoxPro For Macintosh Library |
| Estensione MLC | Microsoft | Microsoft Windows Language Interface Pack Format |
| Estensione MLD | N/A | I-Melody Format For I-Mode |
| Estensione MLE | Dr. Torben Weibert | MAirList Event List |
| Estensione MLF | N/A | Autodesk Mapguide Layer |
| Estensione MLG | IBM | IBM Communications Server Message |
| Estensione MLI | Autodesk, Inc. | Autodesk 3D Studio MAX Material |
| Estensione MLIB | Richard Hughey - Kevin Karplus - Anders Krogh | Model Library |
| Estensione MLK | ValuSoft | Sierra MasterCook Look Format |
| Estensione MLL | Autodesk, Inc. | AutoDesk Maya Plug-in Format |
| Estensione MLM | Novell, Inc. | Novell GroupWise Saved Email Message |
| Estensione MLN | The Alchemy Team | Alchemy Source |
| Estensione MLOCATE | The GNOME Project | Gnome Desktop |
| Estensione MLP | Meridian Audio | Meridian Lossless Packing Audio Format |
| Estensione MLR | IV Produkt AB | Mollier Sketcher |
| Estensione MLS | KIDASA | Milestones Simplicity Format |
| Estensione MLSXML | Skype Limited | Skype XML |
| Estensione MLT | Business Forecast Systems, Inc. | Forecast Pro Multivariate Forecast |
| Estensione MLV | National Instruments Corporation | LabVIEW Mathscript |
| Estensione MLW | N/A | MainLog Data |
| Estensione MLX | Blizzard Entertainment, Inc. | Starcraft Saved Game |
| Estensione MLY | N/A | OCaml Ocamlyacc Input |
| Estensione MM | FreeMind | FreeMind Mind Map Format |
| Estensione MM1 | ActiveXperts Software B.V. | ActiveXperts MMS Toolkit Settings |
| Estensione MM3 | CW Technical Services | Mortgage Minder Saved Mortgage Configuration |
| Estensione MM4 | Microsoft Corporation | Microsoft Windows Word Processing Format |
| Estensione MM6 | N/A | Might And Magic 6 Saved Game Format |
| Estensione MM7 | N/A | Might And Magic 7 Saved Game Format |
| Estensione MM8 | N/A | Might And Magic 8 Saved Game Format |
| Estensione MMA | Intrepid Mouse | Master Album Maker Album Format |
| Estensione MMAP | Mindjet | MindManager Map Format |
| Estensione MMAS | Mindjet | MindManager Theme |
| Estensione MMAT | Mindjet | MindManager Template Format |
| Estensione MMB | www.MediaChance.com | MultiMedia Builder |
| Estensione MMC | Microsoft | Microsoft Office XP Media Content Format |
| Estensione MMCH | Freescale Semiconductor, Inc. | CodeWarrior Compiled Hdr |
| Estensione MMCOLLECTION | Oasys | Microsoft Outlook Mail Manager Plug-in Collection Format |
| Estensione MMD | MightyMango | Mangodata Multi-user Database |
| Estensione MMDC | Ventis Media | MediaMonkey Mobile Device Settings Format |
| Estensione MMDF | N/A | Multi-channel Memorandum Distribution Facility Mailbox Format |
| Estensione MMDL | MITEK HOLDINGS, INC. | SAPPHIRE Structure Model |
| Estensione MMDR | Adobe Systems Incorporated | Adobe Director |
| Estensione MME | N/A | Multipurpose Internet Mail Extensions Format |
| Estensione MMF | Yamaha | Synthetic Music Mobile Application Format |
| Estensione MMG | Moritz Bunkus | MKVToolNix Muxing Settings |
| Estensione MMH | BioWare | Dragon Age Model Mesh Heirarchy |
| Estensione MMIP | Ventis Media | MediaMonkey Installation Format |
| Estensione MMJS | Adobe Systems Incorporated | Adobe JavaScript Document |
| Estensione MMK | Prof. RNDr. Jiri Kolafa, CSc. | MACSIMUS Define |
| Estensione MML | Adobe Systems | Adobe FrameMaker Format |
| Estensione MMM | MAGIX AG | MAGIX Music Maker Audio Format |
| Estensione MMN | Memory-Map, Inc. | Memory-Map Navigator Overlay Object |
| Estensione MMO | Memory-Map | Memory-Map Navigator Overlay Format |
| Estensione MMP | Nokia | Symbian SDK Project Specification Format |
| Estensione MMPA | MOR YAZILIM | MoreMotion Application Studio Page |
| Estensione MMPF | Freescale Semiconductor, Inc. | CodeWarrior Preference |
| Estensione MMPR | Freescale Semiconductor, Inc. | CodeWarrior Project |
| Estensione MMPZ | SourceForge.net | Linux MultiMedia Studio Project |
| Estensione MMRC | inoage GmbH | MADRIX MIDI Remote Configuration |
| Estensione MMS | RAD Game Tools, Inc. | Miles Sound Tools |
| Estensione MMSW | Write Brothers, Inc. | Movie Magic Screenwriter Document |
| Estensione MMT | CoCo Systems Ltd. | CoCo Systems VisiMap |
| Estensione MMU | Midori Media | MyPM Merge Data Format |
| Estensione MMV | Sony | MicroMV Movie Format |
| Estensione MMW | MechCAD Software | AceMoney Financial Data Format |
| Estensione MMX | Westwood Studios (EA) | Command And Conquer Game |
| Estensione MMZ | N/A | MusicMatch Theme |
| Estensione MN1 | Microsoft Corporation | Microsoft Money Version 1 Data |
| Estensione MN2 | Interplay Entertainment Corporation | Descent 2 Mission |
| Estensione MN3 | Interplay Entertainment Corporation | Descent 3 Mission |
| Estensione MN4 | Microsoft Corporation | Microsoft Money 95 Data |
| Estensione MN5 | Microsoft Corporation | Microsoft Money 97 Data |
| Estensione MN6 | Microsoft Corporation | Microsoft Money 98 Data |
| Estensione MN7 | Microsoft Corporation | Microsoft Money 99 Data |
| Estensione MN8 | Microsoft Corporation | Microsoft Money 2000 Data |
| Estensione MN9 | Microsoft Corporation | Microsoft Money 2001 Data |
| Estensione MNB | SciFace Software GmbH & Co. | MuPAD |
| Estensione MNC | BC | My Notes Center Notebook Format |
| Estensione MND | Autodesk, Inc. | AutoCAD Menu Compiler |
| Estensione MNE | Microsoft Corporation | Microsoft Money |
| Estensione MNF | MSC Software Corporation | ADAMS/Flex |
| Estensione MNG | N/A | Multiple Network Graphics |
| Estensione MNH | Sapper Oy | Master Navigator Header Format |
| Estensione MNI | Activision | Star Trek Elite Force 2 Game |
| Estensione MNIT | FlashPeak Inc. | FlashPeak SlimBrowser |
| Estensione MNK | Wpg Computing | My Notes Keeper Notebook Format |
| Estensione MNL | Autodesk | Autodesk AutoCAD Menu LISP Format |
| Estensione MNM | Autodesk | Autodesk 3D Studio Max Character Studio Marker Name Format |
| Estensione MNO | Adobe Systems | Macromedia Design Note |
| Estensione MNP | Ultrasoft Digital Media | Ultrasoft Money |
| Estensione MNR | Autodesk | Autodesk AutoCAD Compiled Menu Format |
| Estensione MNS | Autodesk | AutoCAD Interface Settings Format |
| Estensione MNT | N/A | Visual FoxPro Additional Menu Description Format |
| Estensione MNU | Autodesk | Autodesk AutoCAD Menu Format |
| Estensione MNV | Sony | Sony PlayStation Movie Format |
| Estensione MNX | N/A | Visual FoxPro Main (DBF) Menu Description Format |
| Estensione MNY | Microsoft | Microsoft Money Data Format |
| Estensione MO | N/A | GNU Gettext Machine Object Format |
| Estensione MO3 | Un4seen Developments | MO3 MOD Audio Format |
| Estensione MO? | N/A | Standard Mail Archive |
| Estensione MOB | MediaCorp | MOBTV Video Format |
| Estensione MOBI | Mobipocket | Mobipocket EBook Format |
| Estensione MOBILECONFIG | Apple | Apple IPhone Mobile Configuration Profile |
| Estensione MOBILEPROVISION | Apple | Xcode Mobile Provisioning Profile |
| Estensione MOC | N/A | MOCHA Java Script |
| Estensione MOCHA | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects |
| Estensione MOD | N/A | Audio Module |
| Estensione MODD | Sony | Sony Video Analysis Format |
| Estensione MODE | Panic | Coda For Mac Plugin Format |
| Estensione MODE1V3 | Apple, Inc. | Xcode Project Settings |
| Estensione MODE2V3 | Apple, Inc. | Xcode Project Related |
| Estensione MODEL | Dassault Systemes | CATIA V4 Model Format |
| Estensione MODELPROJ | Microsoft Corporation | Microsoft Visual Studio Modelling Project |
| Estensione MODULE | Drupal | Drupal Module Format |
| Estensione MODUS | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects Modus |
| Estensione MOF | Desktop Management Task Force | Systems Management Server Managed Object Format |
| Estensione MOFF | Sony | Sony AVCHD Index Format |
| Estensione MOG | Sports Mogul Inc. | Football Mogul |
| Estensione MOGG | N/A | Multitrack Digital Audio Format |
| Estensione MOHO | Smith Micro | Anime Studio Animation Project Format |
| Estensione MOI | N/A | MOI Video Format |
| Estensione MOJITO | Lime Wire LLC. | Limewire Kademlia |
| Estensione MOKEY | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects Mokey |
| Estensione MOL | Symyx Technologies | MDL Molfile Molecule Format |
| Estensione MOL2 | Tripos, L.P. | Portable Representation Of A SYBYL Molecule |
| Estensione MOLOGIQ | N/A | HTC EVO 3D |
| Estensione MOM | Apple | Managed Object Model |
| Estensione MOMMA | KPULV | Offspring Fling Replay Format |
| Estensione MON | Mozilla Corporation | Firefox Monday Bookmark Backup |
| Estensione MONET | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects Monet |
| Estensione MONEY | Jumsoft | Money Data Format |
| Estensione MONEYWELL | No Thirst Software | MoneyWell Financial Data Format |
| Estensione MONITORPANEL | Apple, Inc. | Apple Mac OS X Display Panel Extension |
| Estensione MONO | N/A | Bi-level Bitmap |
| Estensione MONTAGE | Mariner Software | Montage Screenplay Format |
| Estensione MONTE | School of Aquatic & Fishery Sciences, University of Washington | CRiSP Harvest |
| Estensione MOO | Apple, Inc. | Apple QuickTime Movie Clip |
| Estensione MOOD | N/A | Amarok Moodbar Data |
| Estensione MOOV | Apple | Apple QuickTime Movie Format |
| Estensione MOP | N/A | MOPAC Input Format |
| Estensione MOPINT | N/A | Mopac Internal Chemical Modeller Input |
| Estensione MOPOUT | N/A | MOPAC Chemical Output |
| Estensione MOPP | Havok.com Inc. | Havok Engine |
| Estensione MOR | Corel Corporation | Corel Shared Writing Tools |
| Estensione MORG | umonkey-tools | Morg |
| Estensione MORSE | N/A | Ringtone Morse Code |
| Estensione MOS | Leaf Imaging | Mamiya Digital Camera RAW Image Format |
| Estensione MOSAIC | Frank M. Midgley | MacOSaiX Mosaic Format |
| Estensione MOSS | AOL Inc. | Netscape Navigator For Mac HTML |
| Estensione MOT | NewTek | LightWave Motion Format |
| Estensione MOTN | Apple, Inc. | Apple Motion Motion |
| Estensione MOTOR | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects Motor |
| Estensione MOU | WinMount International | MOU Compressed Format |
| Estensione MOV | Apple | Apple QuickTime Digital Movie Format |
| Estensione MOVIE | Apple | Apple QuickTime Movie Format |
| Estensione MOX | Imagine That | ExtendSim Model Format |
| Estensione MOXEL | Adobe Systems Incorporated | Adobe Mocha For Adobe After Effects Moxel |
| Estensione MOZ | N/A | Netscape Temporary Cache Format |
| Estensione MOZ-BACKUP | Mozilla Corporation | Mozilla Backup |
| Estensione MOZ-DELETE | Mozilla Corporation | Mozilla Firefox Update |
| Estensione MOZ-UPGRADE | Mozilla Corporation | Mozilla Firefox Upgrade |
| Estensione MOZEML | Mozilla Corporation | Mozilla Thunderbird Mail Message |
| Estensione MP | Autodesk | Autodesk Maya Personal Learning Edition Format |
| Estensione MP+ | N/A | MPEG Plus Audio |
| Estensione MP1 | N/A | MPEG Audio Stream, Layer I Format |
| Estensione MP10 | National Instruments | NI Multisim V10 Project Format |
| Estensione MP11 | National Instruments | NI Multisim V11 Project Format |
| Estensione MP2 | N/A | Sound File (MPEG-1 Layer II Audio Stream) |
| Estensione MP21 | N/A | MPEG-21 Multimedia Format |
| Estensione MP2A | N/A | Sound File (MPEG-1 Layer II Audio Stream) |
| Estensione MP2M | Rockstar Games | Max Payne 2 Mod Format |
| Estensione MP2S | Rockstar Games | Max Payne 2 Saved Game Format |
| Estensione MP2V | N/A | MPEG Video Format |
| Estensione MP3 | Moving Picture Experts Group | Compressed Audio And Music File, Mp3 Songs Or Ringtones |
| Estensione MP3A | N/A | Renamed MP3 |
| Estensione MP3G | TriceraSoft | WinCDG Pro MP3+G Karaoke |
| Estensione MP4 | Moving Picture Experts Group | MPEG-4 Video File Format |
| Estensione MP4INFOVID | N/A | Parrot AR Drone And Gyro Flyer Video |
| Estensione MP4A | Apple, Inc. | MPEG-4 MP4A Codec Audio |
| Estensione MP4B | Apple, Inc. | MPEG-4 Audio Layer Bookmarkable |
| Estensione MP4V | Moving Picture Experts Group | MPEG-4 Video Format |
| Estensione MP5 | Waterloo Maple Inc. | Maple Windows DOS |
| Estensione MP7 | National Instruments | NI Multisim V7 Project Format |
| Estensione MP8 | National Instruments Corporation | NI Multisim V8 Project |
| Estensione MP9 | National Instruments | NI Multisim V9 Project Format |
| Estensione MP? | Terry A. Davis | LoseThos Compiler Map |
| Estensione MPA | N/A | MPEG Audio Format |
| Estensione MPB | Franz Josef Wechselberger | MyPhoneExplorer Backup Format |
| Estensione MPC | Musepack | MusePack Audio Format |
| Estensione MPCPL | Media Player Classic | Media Player Classics Playlist Format |
| Estensione MPD | Microsoft | Microsoft Project Database Format |
| Estensione MPDB | Microsoft Corporation | Windows Media Player Database |
| Estensione MPDCONF | The MPD Team | Music Player Daemon Settings Format |
| Estensione MPDP | NCH Software | MixPad Project Format |
| Estensione MPDS | inoage GmbH | MADRIX Plexus Settings |
| Estensione MPE | N/A | MPEG Movie (Motion Pictures Experts Group) |
| Estensione MPEG | N/A | MPEG Movie |
| Estensione MPEG1 | N/A | Multiplexed MPEG-1/2 Format |
| Estensione MPEG2 | N/A | Multiplexed MPEG-1/2 |
| Estensione MPEG4 | N/A | MPEG-4 Video Format |
| Estensione MPEGA | N/A | MPEG Sound |
| Estensione MPF | Microsoft | Microsoft Design Gallery Format |
| Estensione MPG | N/A | MPEG 1 Video File Format |
| Estensione MPG2 | N/A | MPEG-2 Video Format |
| Estensione MPG3 | N/A | MP3 Audio File For Mac |
| Estensione MPG4 | N/A | MPEG-4 Video |
| Estensione MPGA | N/A | Mpeg-1 Layer3 Audio Stream |
| Estensione MPGINDEX | Adobe Systems | Adobe MPEG Index Format |
| Estensione MPGV | N/A | MPEG-2 Video |
| Estensione MPH | Impressum | Photoline4 Morphing |
| Estensione MPI | The InstallJammer Team | InstallJammer Project Format |
| Estensione MPJ | Minitab | MINITAB Spreadsheet Project Format |
| Estensione MPK | ESRI | ArcGIS Map Package Format |
| Estensione MPKG | N/A | Meta Package Format |
| Estensione MPKT | MOPEKS Organisation | MOPEKS Trial |
| Estensione MPL | Sony | AVCHD Playlist Format |
| Estensione MPLF | Freescale Semiconductor, Inc. | CodeWarrior Library |
| Estensione MPLS | Blu-ray Disc Association | Blu-ray Movie Playlist Information Format |
| Estensione MPM | Rockstar Games | Max Payne Modification Format |
| Estensione MPNT | Apple, Inc. | MacPaint Image Format |
| Estensione MPO | CIPA | CIPA Multi-Picture Format |
| Estensione MPP | Microsoft | Microsoft Project Plan Format |
| Estensione MPPX | Microsoft Corporation | Microsoft Project Project |
| Estensione MPPZ | Magicplot Systems | MagicPlot Project Format |
| Estensione MPP_ | N/A | Microsoft Project For Mac Plan |
| Estensione MPQ | Blizzard Entertainment | Blizzard Entertainment Archive Format |
| Estensione MPQE | Blizzard Entertainment, Inc. | Blizzard Encrypted Game Data |
| Estensione MPR | N/A | Visual FoxPro Generated Menu Program |
| Estensione MPRJ | Native Instruments, Inc. | Maschine Project |
| Estensione MPS | N/A | Microsoft Pocket Streets Map Format |
| Estensione MPSUB | MPlayer | Subtitle Format |
| Estensione MPSY | Freescale Semiconductor, Inc. | CodeWarrior Debug Symb |
| Estensione MPS_ | Joshua Juran | MPW Shell |
| Estensione MPT | Microsoft | Microsoft Project Template Tile |
| Estensione MPU | N/A | MPEG Layer 3 Audio Format |
| Estensione MPV | Moving Picture Experts Group | MPEG 1 Video Format |
| Estensione MPV2 | N/A | MPEG II Video Format |
| Estensione MPVF | CompeGPS TEAM S.L. | CompeGPS Land Fast Vector Map |
| Estensione MPW | Microsoft | Microsoft Project Workspace Format |
| Estensione MPWD | Apple, Inc. | MacWrite Pro |
| Estensione MPWR | Apple, Inc. | MacWrite Pro |
| Estensione MPX | N/A | FoxPro Compiler Menu |
| Estensione MPZ | Benetech | Miradi Project Format |
| Estensione MPZIP | National Instruments | Multisim Pack Format |
| Estensione MP_ | N/A | Mobile Phone Sound Format |
| Estensione MQ4 | MetaQuotes Software | MetaTrader Custom Indicator Format |
| Estensione MQH | MetaQuotes Software Corp. | MetaTrader Trading Terminal |
| Estensione MQL | MetaQuotes Software Corp. | MetaTrader Indicator |
| Estensione MQO | Metasequoia | Metasequoia 3D Image Format |
| Estensione MQT | MetaQuotes Software Corp. | MetaQuotes Language 4 MQL4 Template |
| Estensione MQV | Sony | Sony Movie Player File Format |
| Estensione MRAW | Photron USA, Inc. | Photron Camera RAW Image |
| Estensione MRB | Microsoft | C++ Multiple Resolution Bitmap Graphic Format |
| Estensione MRC | mIRC | MIRC Script Format |
| Estensione MRD | MathRevolt | MathRevolt Infinity Document |
| Estensione MREC | inoage GmbH | MADRIX Record |
| Estensione MRF | Apple, Inc. | Macintosh Font |
| Estensione MRG | MySQL | MySQL Reference Format |
| Estensione MRIMG | Paramount Software UK | Macrium Reflect Disk Image Backup |
| Estensione MRK | N/A | DPOF Digital Print Order Format Auto Print Order Format |
| Estensione MRL | N/A | MRLR Multimedia Retrival Markup Language |
| Estensione MRM | JoWooD Entertainment AG | Gothic 2 |
| Estensione MRML | BWH | 3D Slicer Scene Description Format |
| Estensione MRO | Graham Jones | SharpEye Music Reader |
| Estensione MRP | MathRevolt | Infinity Solution Plot |
| Estensione MRS | MAIET Entertainment | Gunz Game Data Format |
| Estensione MRT | Stimulsoft | Stimulsoft Report Format |
| Estensione MRV | ChemAxon Ltd. | MarvinSketch |
| Estensione MRW | Minolta | Minolta Dimage RAW Image Format |
| Estensione MRXS | Carl Zeiss MicroImaging | MIRAX Virtual Slide Format |
| Estensione MS | Autodesk | 3D Studio Max Script Source Code |
| Estensione MS-TNEF | N/A | Microsoft Transport Neutral Encapsulation Format |
| Estensione MS1 | VIrtualBus | VirtualBus Map Format |
| Estensione MS10 | National Instruments | NI Multisim V10 Circuit Design Format |
| Estensione MS11 | National Instruments | NI Multisim V11 Circuit Design Format |
| Estensione MS2 | N/A | SEQUEST Ms2 |
| Estensione MS3D | Chumbalum Soft | MilkShape 3D Model Format |
| Estensione MS7 | National Instruments | NI Multisim V7 Circuit Design Format |
| Estensione MS8 | National Instruments | NI Multisim V8 Circuit Design Format |
| Estensione MS9 | National Instruments | NI Multisim V9 Circuit Design Format |
| Estensione MSA | N/A | Magic Shadow Archiver Atari Disk Image |
| Estensione MSB | Oracle | Oracle Binary Message Format |
| Estensione MSC | Microsoft | Microsoft Management Console Control Format |
| Estensione MSCG | N/A | Microsoft Clip Art Gallery For Mac |
| Estensione MSCR | JackAss JoeJoe | Rename Master Scrip |
| Estensione MSCT | MOPEKS Organisation | MOPEKS Script |
| Estensione MSCX | The MuseScore Team | MuseScore Music Score Format |
| Estensione MSCX, | Werner Schweer | MuseScore Music Score Backup |
| Estensione MSCZ | The MuseScore Team | MuseScore Compressed Music Score Format |
| Estensione MSCZ, | Werner Schweer | MuseScore Music Score Backup |
| Estensione MSD | ESRI | Map Service Definition Format |
| Estensione MSDEV | Microsoft Corporation | Microsoft Visual C+ Make |
| Estensione MSDL | N/A | Manchester Scene Description Language |
| Estensione MSDM | Microsoft Corporation | Microsoft Windows |
| Estensione MSDVD | Microsoft | Microsoft Windows DVD Maker Format |
| Estensione MSE | Autodesk | 3D Studio Max Encrypted MAXScript Format |
| Estensione MSE-INSTALLER | SourceForge.net | Magic Set Editor Installer |
| Estensione MSF | N/A | Mozilla Thunderbird Mail Summary Format |
| Estensione MSG | Microsoft | Saved Email Message |
| Estensione MSGR | N/A | Microsoft Graph 5 |
| Estensione MSH | N/A | Adobe Visual Communicator Project Format |
| Estensione MSHA | Microsoft | Microsoft Help Library Help Manifest Format |
| Estensione MSHC | Microsoft | Microsoft Help Container Format |
| Estensione MSHDB | Rotunda Software | Ministry Scheduler Pro Database |
| Estensione MSHI | Microsoft | Microsoft Help Index Format |
| Estensione MSHXML | Microsoft Corporation | Microsoft XML Typedata |
| Estensione MSI | Microsoft | Microsoft Windows Installer Installation Package |
| Estensione MSIE | N/A | Microsoft Internet Explorer For Mac HTML |
| Estensione MSIF | Avanquest | MyLabel Designer Deluxe Label Format |
| Estensione MSIL | N/A | Microsoft Intermediate Language |
| Estensione MSJ | MicroSurvey Software Inc. | MicroSurvey CAD Temporary |
| Estensione MSK | Corel | Corel PaintShop Photo Pro Mask Image Format |
| Estensione MSKIN | Maxthon International Limited | Maxthon Skin |
| Estensione MSKN | Ventis Media | MediaMonkey Skin Format |
| Estensione MSL | Microsoft | DocumentDirect And DocumentDirect Applications Suite File Format |
| Estensione MSLZ | N/A | Archive |
| Estensione MSM | Microsoft | Windows Installer Merge Module |
| Estensione MSMESSAGESTORE | Microsoft Corporation | Windows Mail Message Information Database |
| Estensione MSN | Microsoft | Microsoft Windows Network Related Format |
| Estensione MSO | Microsoft | Inline E-mail Attachment |
| Estensione MSOF | Microsoft Corporation | Microsoft Office For Mac |
| Estensione MSP | Microsoft | Windows Installer Patch Format |
| Estensione MSPX | Microsoft | Microsoft XML-based Web Page |
| Estensione MSRCINCIDENT | Microsoft | Microsoft Windows Remote Assistance Request Format |
| Estensione MSS | Xilinx | Xilinx Software Specification Format |
| Estensione MSSTYLE | N/A | Windows XP Unsigned Style |
| Estensione MSSTYLES | Microsoft | Microsoft Windows Resources Themes Luna Format |
| Estensione MST | N/A | Windows Installer Transform Script Format |
| Estensione MSTAT | Richard Hughey - Kevin Karplus - Anders Krogh | SAM Domain Output |
| Estensione MSTT | Insoft Oy. | Prosa Minispecification |
| Estensione MSU | Microsoft | Microsoft Update Standalone Package Format |
| Estensione MSV | Sony | Sony Memory Stick Compressed Voice Files |
| Estensione MSVC | Microsoft Corporation | Microsoft Visual C++ Compiler Makefile |
| Estensione MSW | Corel | Painter Color Mixer Swatches Format |
| Estensione MSWD | Microsoft Corporation | Microsoft Word For Mac Document |
| Estensione MSWK | N/A | Microsoft Works For Mac |
| Estensione MSWMM | Microsoft | Microsoft Windows Movie Maker Project Format |
| Estensione MSX | Microsoft Studios | Age Of Empires II Saved Game |
| Estensione MSYM | Graphisoft | ArchiCAD For MAC Geometric Description Language |
| Estensione MSZ | Ventis Media, Inc. | MediaMonkey Skin |
| Estensione MS_ | Microsoft Corporation | Microsoft Windows Winhelp Compressed |
| Estensione MT2 | MadTracker | MadTracker 2 Module Format |
| Estensione MT9 | ETRI | MT9 Audio Format |
| Estensione MTA | Samsung | Samsung AllShare Metadata Format |
| Estensione MTB | Digistore Solutions (S) Pte. Ltd. | MediaTracker Database Backup |
| Estensione MTC | Digistore Solutions (S) Pte. Ltd. | MediaTracker Database |
| Estensione MTD | Musicnotes | Musicnotes Digital Music Sheet Format |
| Estensione MTDD | N/A | MEDITECH Document Definition |
| Estensione MTE | N/A | MadTracker Envelope Gile |
| Estensione MTF | N/A | Motorola Theme Format |
| Estensione MTG | Jay Klein Productions | Making The Grade |
| Estensione MTH | N/A | Derive Math Format |
| Estensione MTHD | MOPEKS Organisation | MOPEKS Method |
| Estensione MTI | N/A | MadTracker 2 Instrument Format |
| Estensione MTIFF | N/A | Multi-page Tiff |
| Estensione MTK | N/A | MPU-401 Trakker |
| Estensione MTKEY | proDAD Inc. | ProDAD Heroglyph License |
| Estensione MTKT | GeoVisu Development Team | MTK GPS Receiver Data |
| Estensione MTL | N/A | OBJ Material Format |
| Estensione MTM | N/A | MultiTracker Music Module (MOD) Format |
| Estensione MTML | N/A | Meaningful Text Markup Language |
| Estensione MTN | Crystal Impact GbR | Match! Database |
| Estensione MTO | FastCAM Inc. | FastCAM MTO Data |
| Estensione MTP | N/A | Minitab Portable Worksheet Format |
| Estensione MTR | Knife Edge Software | RealFight Radio Control |
| Estensione MTRA | HI CORPORATION | MascotCapsule Resource |
| Estensione MTS | N/A | AVCHD MPEG-2 Transport Stream Format |
| Estensione MTS1 | N/A | MPEG-2 Transport Stream |
| Estensione MTT | Digital Confidence | MetadataTouch Template |
| Estensione MTV | N/A | MTV Video Format |
| Estensione MTW | Minitab | Minitab Data Format |
| Estensione MTX | N/A | MadTracker Extension Format |
| Estensione MTXT | MOPEKS Organisation | MOPEKS Problem |
| Estensione MTZ | N/A | Compressed MetaStream Scene Format |
| Estensione MT_ | GVOX | Encore Compressed |
| Estensione MU | Squad | Kerbal Space Program Mesh Format |
| Estensione MU3 | Myriad Software | Myriad Packed Musical Score |
| Estensione MUC | Bitz & Pixelz BV | Music Collector Collection Data |
| Estensione MUD | Lightbox Education | Textease Multi User Database |
| Estensione MUF | Alpha Software | Alpha Five Access Control Format |
| Estensione MUG | Hanesbrands Inc. | Hanes T-ShirtMaker Document |
| Estensione MUI | Microsoft | MultiLanguage Windows Resource Format |
| Estensione MUIMANIFEST | Microsoft Corporation | Microsoft Windows Multilingual User Interface |
| Estensione MUI_CCCD5AE0 | Microsoft | Hid User Library |
| Estensione MUL | Origin Systems | Ultima Online Game |
| Estensione MULIB | Adobe Systems Incorporated | Adobe Muse Exported Library |
| Estensione MULT | Richard Hughey - Kevin Karplus - Anders Krogh | SAM Alignment Output |
| Estensione MUM | Microsoft | Windows Vista Update Package Format |
| Estensione MUP | Braeburn Software | Music Publisher Data Format |
| Estensione MUS | MakeMusic | Finale Music File Format |
| Estensione MUS10 | N/A | Audio |
| Estensione MUSA | Bungie Studios | Aleph One Music Format |
| Estensione MUSE | Adobe Systems | Adobe Muse Project Format |
| Estensione MUSX | Moretti & Murphy Reporting | Min‐U‐Script Xpress Transcript Data |
| Estensione MUT | Broad Institute | Integrative Genomics Viewer Mutations List |
| Estensione MUX | Ubisoft Entertainment | TrackMania Music Format |
| Estensione MUZ | Hover | MUZ Audio Format |
| Estensione MV | Miva Merchant | MivaScript Format |
| Estensione MV1 | N/A | Video |
| Estensione MV4 | N/A | Apple QuickTime Video |
| Estensione MV85 | Adobe Systems Incorporated | Adobe Director For Mac Movie |
| Estensione MV93 | Adobe Systems Incorporated | Adobe Director For Mac Movie |
| Estensione MV95 | Adobe Systems Incorporated | Adobe Director For Mac Movie |
| Estensione MVA | Microsoft Corporation | Microsoft Setup Archive |
| Estensione MVB | N/A | Multimedia Viewer Book Format |
| Estensione MVC | Miva Merchant | Sony Digital Mavica Photo Image Format |
| Estensione MVD | MAGIX | Movie Edit Pro Video Format |
| Estensione MVDX | MatchWare A/S | MindView MindMap Archive |
| Estensione MVE | BioWare | Interplay Video Format |
| Estensione MVEX | muvee | Muvee AutoProducer Unicode Document Format |
| Estensione MVF | Autodesk, Inc. | AutoFlix Stop Frame |
| Estensione MVG | ImageMagick Studio LLC | ImageMagick Proprietary Vector Graphics Format |
| Estensione MVI | Autodesk | Autodesk AutoCAD Movie Command Format |
| Estensione MVL | N/A | Medison 3D Volume Data |
| Estensione MVM | MAGIX AG | MAGIX PhotoStory On DVD Slideshow |
| Estensione MVP | MAGIX | Movie Edit Pro Video Project Format |
| Estensione MVR | IBM | IBM HotMedia Multimedia Format |
| Estensione MVS | N/A | Xilinx Project Language And Simulation Format |
| Estensione MVT | Sebenza | Ultimate Wish Lists Template |
| Estensione MVV | N/A | AVS Media Player MPEG Video |
| Estensione MVW | McAfee, Inc. | Saber LAN Log |
| Estensione MVX | Clickteam | Multimedia Fusion Movement Extension Format |
| Estensione MVY | MAGIX | MAGIX Video Easy Project Format |
| Estensione MV_ | MAGIX | Magix Movie Edit Pro Movie Backup Format |
| Estensione MW | Maplesoft | Maple Worksheet Format |
| Estensione MW2 | Logo Computer Systems Inc. | MicroWorlds Logo Activity |
| Estensione MW2D | Apple, Inc. | Apple MacWrite |
| Estensione MW2S | Apple, Inc. | MacWrite II Model |
| Estensione MW4 | Activision | MechWarrior Game Structure File Archive |
| Estensione MWAV | N/A | Extended WAV |
| Estensione MWB | MySQL | MySQL Workbench Database Models |
| Estensione MWC | Object Computing, Inc | Make Project Creator Input |
| Estensione MWD | Mariner Software | Mariner Write Document Format |
| Estensione MWDP | Freescale Semiconductor, Inc. | CodeWarrior Debugger |
| Estensione MWE | Oracle Corporation | OpenArchitectureWare Workflow |
| Estensione MWF | Autodesk | MapGuide Format |
| Estensione MWI | Medlin Accounting | Medlin Payroll Software Invoice Layout Information |
| Estensione MWII | Apple, Inc. | MacWrite II Text Document |
| Estensione MWK | N/A | MusicWrite Music Score |
| Estensione MWLIC | No Thirst Software | MoneyWell License Information Format |
| Estensione MWP | IBM | Lotus Word Pro 97 Smartmaster Format |
| Estensione MWPD | Apple, Inc. | MacWrite Pro Document |
| Estensione MWPP | Apple, Inc. | MacWrite Pro Document |
| Estensione MWPR | Apple, Inc. | MacWrite Pro |
| Estensione MWS | Maplesoft | Maple Spreadsheet Document Format |
| Estensione MWT | Thomson Reuters | MetaStock Stock Analysis Template |
| Estensione MWX | Autodesk | Autodesk MapGuide Author Map Window XML Format |
| Estensione MX | Wolfram Research | Matlab Common Matrix Routines Format |
| Estensione MX1 | N/A | Coucoucircus.org Audio Temporary |
| Estensione MX2 | ValuSoft | MasterCook Recipe |
| Estensione MX3 | Acoustica | Mixcraft Project Format |
| Estensione MX4 | Acoustica | Mixcraft 4 Audio Format |
| Estensione MX5 | Acoustica | Mixcraft 5 Audio Format |
| Estensione MX5TEMPLATE | Acoustica | Mixcraft Audio Project Template Format |
| Estensione MX6 | Acoustica | Mixcraft 6 Audio |
| Estensione MXAD | J R Oakley | Mandelbrot Explorer All Data Format |
| Estensione MXADDON | Maxthon International | Maxthon Addon Format |
| Estensione MXC | Esri | ArcView Geocoding Index For Read-write Coverages |
| Estensione MXC2 | MAGIX | MAGIX Music Maker Cache |
| Estensione MXC3 | MAGIX AG | Magix Photo Manager Thumbnail Cache |
| Estensione MXCS | J R Oakley | Mandelbrot Explorer Colour Scheme Format |
| Estensione MXD | ESRI | ArcGIS Map Document Format |
| Estensione MXDIC | Maxthon International | Maxthon Dictionary Format |
| Estensione MXDL | Maxthon International Limited | Maxthon Incomplete Download |
| Estensione MXE | Insight Software Solutions | Macro Express Format |
| Estensione MXF | SMPTE | Material Exchange Format |
| Estensione MXFD | ABBYY | ABBYY Form |
| Estensione MXFR | J R Oakley | Mandelbrot Explorer Fractal Region Format |
| Estensione MXG | Mobiiko | Miinoto Exchangeable Group Format |
| Estensione MXI | Adobe Systems | Adobe Dreamweaver Extension Manager Format |
| Estensione MXIT | N/A | MXit Data |
| Estensione MXL | The MuseScore Team | Compressed MusicXML Music Notation Format |
| Estensione MXM | Next Limit | Maxwell Render Material Definition Format |
| Estensione MXMF | MIDI Manufacturers Association | Mobile XMF Format |
| Estensione MXML | Adobe Systems | Adobe Flex Interface Component Format |
| Estensione MXN | Mobiiko | Miinoto Exchangeable Note Format |
| Estensione MXP | Adobe Systems | Adobe (Macromedia) Extension Package Format |
| Estensione MXPRJ | Native Instruments, Inc. | Maschine 2.0 Project |
| Estensione MXS | Next Limit | Maxwell Render Scene Definition Format |
| Estensione MXSD | IBM | IBM WebSphere Message Definition |
| Estensione MXSKIN | Maxthon International | Maxthon Skin Format |
| Estensione MXT | ESRI | ArcGIS ArcMap Map Template Format |
| Estensione MXV | MAGIX | MAGIX Movie Edit Pro Video Format |
| Estensione MXZ | Maximizer Software Inc. | Maximizer Data |
| Estensione MY3D | N/A | My3D Tools Exported |
| Estensione MYAPP | Microsoft | Microsoft Visual Studio Application XML Format |
| Estensione MYB | MYOB Limited | MYOB Data |
| Estensione MYCOLORS | Stardock | Stardock MyColors Theme Format |
| Estensione MYD | MySQL | MySQL Database Data Format |
| Estensione MYDOCS | N/A | Send To Format |
| Estensione MYE | MYOB Limited | MYOB |
| Estensione MYI | N/A | MySQL Database Index Format |
| Estensione MYL | Avanquest Software | MyLogo Maker Image |
| Estensione MYO | MYOB Limited | MYOB Data |
| Estensione MYOB | MYOB Limited | MYOB Data |
| Estensione MYOX | MYOB Limited | MYOB Data |
| Estensione MYP | Electronic Arts, Inc. | Warhammer Online: Age Of Reckoning |
| Estensione MYR | Myriad Software | Myriad Music Format |
| Estensione MYS | Vineyard Technologies | Vineyard Captured Video Format |
| Estensione MYV | goVivaldi Inc. | Vivaldi Studio Score |
| Estensione MZ | David Webber | Mozart Compressed |
| Estensione MZ2 | N/A | Maze-solver MZ2 |
| Estensione MZB | N/A | MegaZeux Board |
| Estensione MZE | Gregory Peatfield | Maze Creator |
| Estensione MZF | N/A | MediaZip Archive |
| Estensione MZP | Autodesk | Autodesk 3D Studio Max MAXScript Zip Package |
| Estensione MZT | David Webber | MOZART Template |
| Estensione MZV | Enliven Marketing Technologies Corporation | Viewpoint Media Player ZoomView Titles |
| Estensione MZZ | Microsoft | Microsoft .NET Framework Installation Package Format |
| Estensione M_P | Parametric Technology Corporation | Pro/ENGINEER Temporary |
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