.M4U | Open Source | Videofiler | MPEG-4 Playlist | Microsoft Windows Media Player | Microsoft Corporation |
.M4V | Apple | Videofiler | iTunes Video File | Microsoft Windows Media Player | Microsoft Corporation |
.M75 | Moving Picture Experts Group | Videofiler | MPEG Video File | Microsoft Windows Media Player | Microsoft Corporation |
.MAD | Electronic Arts | Spillfiler | Electronic Arts Madcow Movie File | Microsoft Access | Microsoft Corporation |
.MAF | National Cancer Institute | Datafiler | Mutation Annotation Format File | Microsoft Notepad | Microsoft Corporation |
.MAG | Microsoft Corporation | Uvanlige filer | Access Diagram Shortcut File | Microsoft Access | Microsoft Corporation |
.MAI | Microsoft Corporation | Datafiler | Microsoft Mail File | Microsoft Mail | Microsoft Corporation |
.MAILABVIEW | Microsoft Corporation | Datafiler | MS AddressBook File | Microsoft Windows | Microsoft Corporation |
.MAILHOST | Microsoft Corporation | Innstillingsfiler | MSN Mailhost Settings File | MSN Explorer | Microsoft Corporation |
.MAK | Sublime HQ Pty Ltd | Utviklerfiler | Makefile | Microsoft Visual Studio | Microsoft Corporation |
.MAKEFILE | Sublime HQ Pty Ltd | Utviklerfiler | Makefile | Microsoft Visual Studio | Microsoft Corporation |
.MAM | Microsoft Corporation | Eksekverbare filer | Microsoft Access Macro | Microsoft Access | Microsoft Corporation |
.MAN | Unknown Developer | Tektfiles | Unix Manual | Microsoft Notepad | Microsoft Corporation |
.MANIFEST | Microsoft Corporation | Systemfiler | Windows Application Manifest File | Microsoft Notepad | Microsoft Corporation |
.MAP | id Software | Spillfiler | Quake Engine Map File | Microsoft Visual Studio | Microsoft Corporation |
.MAPIMAIL | Microsoft Corporation | Systemfiler | Send To Mail Recipient | Microsoft Windows | Microsoft Corporation |
.MAQ | Microsoft Corporation | Databasefiler | Microsoft Access Query | Microsoft Access | Microsoft Corporation |
.MAR | Microsoft Corporation | Databasefiler | Microsoft Access Report | Microsoft Access | Microsoft Corporation |
.MARKDOWN | Various Developers | Utviklerfiler | Markdown Documentation File | Microsoft Notepad | Microsoft Corporation |
.MAS | Image Space Incorporated | Spillfiler | rFactor Track File | Microsoft Access | Microsoft Corporation |
.MASTER | Microsoft Corporation | Web-Filer | ASP.NET Master Page | Microsoft Visual Studio | Microsoft Corporation |
.MAT | MathWorks | Datafiler | MATLAB MAT-File | Microsoft Access | Microsoft Corporation |
.MAV | Microsoft Corporation | Databasefiler | Access View File | Microsoft Access | Microsoft Corporation |
.MAW | Microsoft Corporation | Databasefiler | Access Data Access Page | Microsoft Access | Microsoft Corporation |
.MAZ | Microsoft Corporation | Spillfiler | MAZ | Hover! | Microsoft Corporation |
.MBB | Kodak | Uvanlige filer | Kodak EasyShare Data File | Microsoft Word | Microsoft Corporation |
.MBF | Microsoft Corporation | Backupfiler | Microsoft Money Backup File | Microsoft Money | Microsoft Corporation |
.MBR | GNU Operating System | Systemfiler | Master Boot Record File | Zune | Microsoft Corporation |
.MBSA | Microsoft Corporation | Datafiler | Microsoft Baseline Security Analyzer File | Microsoft Baseline Security Analyzer | Microsoft Corporation |
.MBX | Microsoft Corporation | Datafiler | Outlook Express Mailbox | Microsoft Outlook Express | Microsoft Corporation |
.MC6 | Smith Micro Software | Grafiske filer | Poser 6 Material File | Microsoft Visual C++ | Microsoft Corporation |
.MCL | Microsoft Corporation | Innstillingsfiler | Windows Media Center Link File | Microsoft Windows Media Player | Microsoft Corporation |
.MCT | Microsoft Corporation | Datafiler | Windows Live Messenger Data File | Microsoft Windows Live Messenger | Microsoft Corporation |
.MD | Various Developers | Utviklerfiler | Markdown Documentation File | Microsoft Notepad | Microsoft Corporation |
.MDA | Microsoft Corporation | Plug-in-filer | Access Add-in File | Microsoft Access | Microsoft Corporation |
.MDB | Microsoft Corporation | Databasefiler | Microsoft Access Database | Microsoft Access | Microsoft Corporation |
.MDBACKUP | Apple | Backupfiler | iPhone Data Backup File | Microsoft Notepad | Microsoft Corporation |
.MDBHTML | Microsoft Corporation | Databasefiler | Microsoft Access Database HTML File | Microsoft Access | Microsoft Corporation |
.MDE | Microsoft Corporation | Plug-in-filer | Compiled Access Add-in File | Microsoft Access | Microsoft Corporation |
.MDF | Alcohol Soft | Diskbildefiler | Alcohol 120% Disk Image File Format | Microsoft Visual Studio | Microsoft Corporation |
.MDI | Microsoft Corporation | Sideutformingsfiler | Microsoft Document Imaging File | Microsoft Office | Microsoft Corporation |
.MDK | Microsoft Corporation | Tektfiles | Madoko Document File | Madoko | Microsoft Corporation |
.MDL | MathWorks | Datafiler | MathWorks Simulink Model | Microsoft Notepad | Microsoft Corporation |
.MDMP | Microsoft Corporation | Systemfiler | Windows Minidump | Microsoft Visual Studio | Microsoft Corporation |
.MDN | Microsoft Corporation | Databasefiler | Blank Access Database Template | Microsoft Access | Microsoft Corporation |
.MDO | Alcohol Soft | Diskbildefiler | Alcohol 120% Split Image File | Microsoft Windows Server 2016 | Microsoft Corporation |
.MDOWN | John Gruber | Tektfiles | Markdown Markup Language Source Code | Microsoft Notepad | Microsoft Corporation |
.MDP | Microsoft Corporation | Innstillingsfiler | Visual C++ 5 Workspace File | Microsoft Visual C++ | Microsoft Corporation |
.MDT | Microsoft Corporation | Datafiler | Microsoft Access Data File | Microsoft Access | Microsoft Corporation |
.MDW | Microsoft Corporation | Uvanlige filer | Access Workgroup File | Microsoft Access | Microsoft Corporation |
.MDX | Disc Soft Ltd. | Diskbildefiler | Extended Media Descriptor File | Microsoft SQL Server | Microsoft Corporation |
.MDZ | Microsoft Corporation | Datafiler | Access Wizard Template | Microsoft Access | Microsoft Corporation |
.ME | Unknown Developer | Uvanlige filer | Temporary Delete Me File | Microsoft Notepad | Microsoft Corporation |
.MED | Rockwell Automation Inc. | Utviklerfiler | RSView Development Project Archive | Microsoft Notepad | Microsoft Corporation |
.MEDLINE | National Library of Medicine | Datafiler | MEDLINE Document | Microsoft Notepad | Microsoft Corporation |
.MEF | Microsoft Corporation | Kamera Raw-Filer | Mamiya RAW Image | Microsoft Windows Photos | Microsoft Corporation |
.MEM | Microsoft Corporation | Backupfiler | FoxPro Variable File | Microsoft Visual FoxPro | Microsoft Corporation |
.MENU | id Software | Spillfiler | Quake 3 Engine Menu File | Microsoft Notepad | Microsoft Corporation |
.MET | Emulex Corporation | Datafiler | eMule Resource File | ACD Systems Canvas | Microsoft Corporation |
.MEU | Microsoft Corporation | Datafiler | DOS Shell Menu Group File | MS-DOS | Microsoft Corporation |
.MF | Walt Disney Imagineering | Spillfiler | Gameplay Multifile | Microsoft Notepad | Microsoft Corporation |
.MFCRIBBON-MS | Microsoft Corporation | Utviklerfiler | MFC Ribbon Definition XML File | Microsoft Visual Studio | Microsoft Corporation |
.MFI | Microsoft Corporation | Datafiler | Windows 98 Resource Kit Data Format | Microsoft Windows | Microsoft Corporation |
.MFT | Kaspersky Lab | Datafiler | Kaspersky File Table | Microsoft Windows | Microsoft Corporation |
.MG1 | Microsoft Corporation | Lydfiler | MusiGenesis Project | Music Genesis | Microsoft Corporation |
.MGC | Microsoft Corporation | Vektorbildefiler | Microsoft Clip Organizer Media Catalog | Microsoft Office | Microsoft Corporation |
.MHP | Open Source | Datafiler | Maths Helper Plus File | Microsoft Picture It! | Microsoft Corporation |
.MHT | Various Developers | Web-Filer | MHTML Web Archive | Internet Explorer | Microsoft Corporation |
.MHTM | Microsoft Corporation | Web-Filer | Mime HTML (MHTML) File | Internet Explorer | Microsoft Corporation |
.MHTML | Microsoft Corporation | Web-Filer | Mime HTML (MHTML) File | Internet Explorer | Microsoft Corporation |
.MIB | Milenix Software Ltd. | Backupfiler | MyInfo Topic Backup | Microsoft Notepad | Microsoft Corporation |
.MIC | Microsoft Corporation | Rasterbildefiler | Image Composer File | Microsoft Image Composer | Microsoft Corporation |
.MID | Open Source | Lydfiler | MIDI Audio File | Microsoft Windows Media Player | Microsoft Corporation |
.MIDI | Synthesia LLC | Lydfiler | MIDI File | Microsoft Windows Media Player | Microsoft Corporation |
.MIF | Adobe Systems Incorporated | Sideutformingsfiler | FrameMaker Interchange Format File | Microsoft Systems Management Server | Microsoft Corporation |
.MIG | Microsoft Corporation | Backupfiler | Windows Migration Backup File | Windows Easy Transfer | Microsoft Corporation |
.MIM | Internet Engineering Task Force | Krypterte filer | Multi-Purpose Internet Mail Message File | Microsoft Outlook Express | Microsoft Corporation |
.MIME | Various Developers | Krypterte filer | Multi-Purpose Internet Mail Extension | Microsoft Outlook Express | Microsoft Corporation |
.MIN | Okuma | CAD-filer | Okuma CNC Program File | Microsoft Notepad | Microsoft Corporation |
.MIX | Microsoft Corporation | Rasterbildefiler | Microsoft Image Exchange File | Microsoft Picture It! | Microsoft Corporation |
.MKE | Microsoft Corporation | Uvanlige filer | Microsoft Windows SDK Make Data | Microsoft .NET Framework | Microsoft Corporation |
.ML | Robin Milner | Utviklerfiler | ML Source Code File | Microsoft Visual Studio | Microsoft Corporation |
.MLB | Avanquest Software | Datafiler | MyLabel Designer Deluxe Project File | Microsoft Visual FoxPro | Microsoft Corporation |
.MLC | Microsoft Corporation | Systemfiler | Microsoft Language Interface Pack | Microsoft Windows | Microsoft Corporation |
.MLI | Unknown Developer | Datafiler | Encyclopedia Media List | Microsoft Visual Studio | Microsoft Corporation |
.MM4 | Microsoft Corporation | Tektfiles | Microsoft Windows Word Processing Format | Microsoft Windows | Microsoft Corporation |
.MMC | Microsoft Corporation | Datafiler | Microsoft Media Catalog | Microsoft Office | Microsoft Corporation |
.MME | Smith Micro Software | Krypterte filer | Multipurpose Internet Mail Extensions | Microsoft Outlook | Microsoft Corporation |
.MMF | Microsoft Corporation | Datafiler | Microsoft Message File | Microsoft Exchange Server | Microsoft Corporation |
.MMM | Magix Software GmbH | Lydfiler | Music Maker Arrangement File | Microsoft Windows Font Viewer | Microsoft Corporation |
.MMT | Open Source | Komprimerte filer | Nimbus 7 SAMS Data File | Microsoft Notepad | Microsoft Corporation |
.MMV | Sony | Videofiler | MicroMV Video File | Microsoft Windows Photos | Microsoft Corporation |
.MMW | Microsoft Corporation | Vektorbildefiler | Microsoft Clip Organizer Media Catalog | Microsoft Office | Microsoft Corporation |
.MN2 | Interplay Entertainment | Spillfiler | Descent 2 Mission File | Microsoft Money | Microsoft Corporation |
.MN4 | Microsoft Corporation | Uvanlige filer | Microsoft Money 95 Data File | Microsoft Money | Microsoft Corporation |
.MN7 | Microsoft Corporation | Datafiler | Microsoft Money (Ver 7) Data File | Microsoft Money | Microsoft Corporation |
.MN8 | Microsoft Corporation | Uvanlige filer | Microsoft Money 2000 Data File | Microsoft Money | Microsoft Corporation |
.MN9 | Microsoft Corporation | Datafiler | Microsoft Money File | Microsoft Money | Microsoft Corporation |
.MNT | Microsoft Corporation | Tektfiles | FoxPro Menu Memo | Microsoft Visual FoxPro | Microsoft Corporation |
.MNU | Autodesk, Inc. | Innstillingsfiler | AutoCAD Interface Layout File | Microsoft Notepad | Microsoft Corporation |