M File Extensions
Browse file types with extensions beginning with M.
| Extension | File Type | Popularity |
|---|---|---|
| .M | Wolfram Mathematica Language Package | 3.1 |
| .M | Objective-C Implementation File | 3.6 |
| .M | MATLAB Source Code File | 3.4 |
| .M | Mercury Source Code File | 3.3 |
| .M | PC-98 Game Music File | 3.2 |
| .M12 | Schiller medilog ECG Raw Data File | 1.5 |
| .M15 | MPEG Video | 3.4 |
| .M1A | MPEG-1 Audio File | 2.2 |
| .M1PG | iFinish Video Clip | 2.7 |
| .M1V | MPEG-1 Video File | 3.6 |
| .M2 | World of Warcraft Model Object | 3.9 |
| .M2 | PC-98 Game Music File | 3.0 |
| .M21 | MPEG-21 File | 3.0 |
| .M21 | AXMEDIS MPEG-21 File | 3.0 |
| .M2A | MPEG-1 Layer 2 Audio File | 3.0 |
| .M2P | Maxthon 2 Browser Plugin File | 2.5 |
| .M2P | MPEG-2 Program Stream File | 3.3 |
| .M2S | Maxthon 2 Browser Skin File | 4.0 |
| .M2T | HDV Video File | 3.6 |
| .M2TS | Blu-ray BDAV Video File | 3.5 |
| .M2V | MPEG-2 Video | 3.0 |
| .M3 | Blizzard MDX3 Model File | 2.9 |
| .M3D | 3D Model File | 4.3 |
| .M3D | DIALux 3D Object File | 4.1 |
| .M3G | Mobile 3D Graphics 3D Model | 3.7 |
| .M3P | Mach3 Plugin File | 3.5 |
| .M3U | M3U Media Playlist | 3.6 |
| .M3U8 | UTF-8 M3U Playlist | 3.7 |
| .M3UP | M3U Playlist (UTF-8) | 3.0 |
| .M4 | Macro Processor Library | 3.3 |
| .M4A | MPEG-4 Audio | 3.7 |
| .M4B | MPEG-4 Audiobook | 3.6 |
| .M4E | MPEG-4 Video File | 3.0 |
| .M4F | Sony Network Camera Video | 3.3 |
| .M4P | iTunes Music Store Audio File | 3.3 |
| .M4R | iPhone Ringtone | 4.0 |
| .M4S | MPEG-DASH Video Segment | 3.8 |
| .M4U | MPEG-4 Playlist | 3.9 |
| .M4V | iTunes Video File | 3.6 |
| .M5P | MachFive Preset File | 3.0 |
| .M64 | Mupen64 Movie File | 3.0 |
| .M75 | MPEG Video | 3.5 |
| .M77T | MGD77T Data File | 2.0 |
| .M7C | M7CL Console Data | 4.0 |
| .MA | Maya ASCII Scene | 4.0 |
| .MA1 | Monarch Audio | 2.7 |
| .MAAS | MAAS Ransomware Encrypted File | 3.0 |
| .MAB | Mozilla Address Book | 3.3 |
| .MABK | Moto Android Backup File | 3.0 |
| .MAC | MacPaint Image | 2.8 |
| .MAC | Application Macro File | 2.4 |
| .MACBIN | Macbinary Encoded File | 3.0 |
| .MACVM | Parallels Virtual Machine (Virtualization Framework Based) | 4.0 |
| .MAD | Access Module Shortcut | 3.7 |
| .MAD | Electronic Arts Madcow Movie File | 4.0 |
| .MAE | My Avatar Editor Character File | 4.4 |
| .MAF | Microsoft Access Form | 3.2 |
| .MAF | Mutation Annotation Format File | 2.8 |
| .MAFF | Mozilla Archive Format File | 3.3 |
| .MAG | Access Diagram Shortcut File | 3.1 |
| .MAG | Magic Circuit Layout File | 1.5 |
| .MAGIC | SlideMagic Presentation File | 3.0 |
| .MAGIK | Magik Source Code File | 2.0 |
| .MAGIWOL | MagiWOL File | 3.5 |
| .MAHJONGTITANSSAVE-MS | Mahjong Titans Saved Game | 3.9 |
| .MAI | Microsoft Mail File | 3.8 |
| .MAID | CUSTOM CAST Character or Preset | 1.0 |
| .MAILHOST | MSN Mailhost Settings File | 3.0 |
| .MAILPLANELICENSE | Mailplane License File | 2.0 |
| .MAILSIGNATURE | Apple Mail Email Signature | 2.0 |
| .MAILSTATIONERY | Apple Mail Stationery File | 3.0 |
| .MAILTOLOC | Mail Internet Location File | 2.0 |
| .MAK | Makefile | 3.6 |
| .MAKE | Drush Makefile | 3.0 |
| .MAKE | Xcode Makefile Script | 3.1 |
| .MAKEFILE | Makefile | 3.7 |
| .MAKER | Adobe Character Animator Puppet Maker Template | 3.0 |
| .MAKERBOT | MakerBot Print File | 4.3 |
| .MAKO | Mako Template | 3.4 |
| .MAL | MadAppLauncher Configuration File | 3.7 |
| .MAL | Malbolge Source Code File | 1.0 |
| .MAM | Microsoft Access Macro Shortcut | 2.7 |
| .MAMC | Murgee Auto Mouse Click Script | 1.5 |
| .MAMX | Music Animation Machine Score | 2.0 |
| .MAN | Unix Manual | 3.9 |
| .MANI | Mine-imator Project File | 3.7 |
| .MANIFEST | Windows Application Manifest File | 4.1 |
| .MANIFEST | Steam Manifest File | 3.5 |
| .MANM | Vietcong Game Data File | 3.0 |
| .MAP | Image Map | 2.8 |
| .MAP | Quake Engine Game Map | 3.9 |
| .MAP | Weather Defender Map | 2.3 |
| .MAP | NAVIGON Map File | 2.4 |
| .MAP | Mapjects Server Webparts File | 2.1 |
| .MAP | TECkit Mapping File | 2.4 |
| .MAP | Halo Map File | 3.6 |
| .MAP | Furcadia Dream File | 2.9 |
| .MAP | Leges Motus Map File | 2.5 |
| .MAP | Fallout Map File | 3.1 |
| .MAP | Rigs of Rods Key Assignments File | 2.4 |
| .MAP | Super Mario War Map File | 2.1 |
| .MAP | Terraria Map File | 3.8 |
| .MAP16 | Map16 Tile File | 2.0 |
| .MAPIMAIL | Send To Mail Recipient | 4.0 |
| .MAPLET | Maplet World File | 3.0 |
| .MAPSDATA | iOS Maps Data File | 3.7 |
| .MAPX | Mapjects Client Webparts File | 2.7 |
| .MAQ | Microsoft Access Query | 3.3 |
| .MAR | Microsoft Access Report | 3.6 |
| .MAR | Mariner Calc Spreadsheet | 2.7 |
| .MAR | Mozilla Archive | 3.6 |
| .MAR | MSN Explorer Archive | 2.8 |
| .MARKDN | Markdown File | 2.3 |
| .MARKDOWN | Markdown Documentation File | 3.6 |
| .MARKO | Marko Source Code File | 3.0 |
| .MARS | Adobe MARS File | 3.0 |
| .MARSHAL | Marshal Data Migration Model File | 4.0 |
| .MART | MartView eBook File | 4.5 |
| .MAS | Access Stored Procedure | 2.0 |
| .MAS | MEGA Alignment Sequence File | 3.2 |
| .MAS | rFactor Track File | 3.9 |
| .MASK | SpeedGrade Color Mask File | 2.0 |
| .MASSEFFECTPROFILE | Mass Effect Player Profile | 3.0 |
| .MASSEFFECTSAVE | Mass Effect Saved Game | 4.0 |
| .MASTER | ASP.NET Master Page | 3.7 |
| .MAT | Microsoft Access Table Shortcut File | 3.5 |
| .MAT | MATLAB MAT-file | 2.9 |
| .MAT | V-Ray Materials File | 1.5 |
| .MAT | Vue Material File | 2.4 |
| .MAT | 3ds Max Materials File | 2.8 |
| .MATERIAL | Rigs of Rods Texture Reference File | 3.0 |
| .MATERIAL | Godot Engine Material | 4.0 |
| .MATERIAL | OGRE Material Script | 3.0 |
| .MATO | Atomic Combat Saved Game | 3.0 |
| .MAU | Media Attachment Unit | 1.0 |
| .MAV | Access View File | 3.6 |
| .MAW | Access Data Access Page | 3.4 |
| .MAX | PaperPort Scanned Document | 3.1 |
| .MAX | OmniPage Scanned Document | 3.4 |
| .MAX | 3ds Max Scene File | 3.4 |
| .MAX | Action Replay Max Save File | 3.1 |
| .MAXC | 3ds Max Container File | 3.3 |
| .MAZ | Hover! Maze File | 2.3 |
| .MB | Maya Binary Scene | 3.8 |
| .MB | Kodak EasyShare Data File | 2.7 |
| .MB64 | Mario Builder 64 Level | 4.0 |
| .MBA | Martus Bulletin Archive | 2.0 |
| .MBA | MyBoard Activity File | 1.5 |
| .MBA | MailNavigator Mail Box Archive | 3.0 |
| .MBB | ManaBook Book File | 2.5 |
| .MBB | Kodak EasyShare Data File | 2.8 |
| .MBBK | ManaBook Book Kit File | 1.0 |
| .MBD | Multimedia Builder Project File | 4.0 |
| .MBF | Microsoft Money Backup File | 3.8 |
| .MBG | Mailbag Assistant Mailbox File | 2.0 |
| .MBG | Microsoft Mailbag | 3.6 |
| .MBI | Multi-Bootable Information File | 4.0 |
| .MBIN | No Man's Sky Compiled Settings File | 1.7 |
| .MBK | dBASE Multiple Index Backup File | 4.2 |
| .MBK | MediaTek Backup File | 2.0 |
| .MBL | Logger Pro Data File | 4.2 |
| .MBLOCK | mBlock Project File | 4.2 |
| .MBM | Multi Bitmap File | 3.0 |
| .MBM | Kerbal Space Program Texture File | 3.2 |
| .MBN | Multi Boot Image | 3.6 |
| .MBOX | Email Mailbox | 3.4 |
| .MBP | Mobipocket Notes File | 3.5 |
| .MBP | MediaShow Burning Project File | 3.0 |
| .MBR | Master Boot Record File | 3.8 |
| .MBR | Zune Smooth Streaming File | 3.5 |
| .MBS | Opera Mailbox File | 2.8 |
| .MBSA | Microsoft Baseline Security Analyzer File | 3.5 |
| .MBT | Blue Card Manager Merit Badge Template File | 2.7 |
| .MBTILES | Mapbox Tileset | 3.5 |
| .MBW | MBRWizard Archive | 2.0 |
| .MBW | Mine Blocks World | 4.3 |
| .MBWB | Mine Blocks Worlds and Settings Backup | 3.0 |
| .MBX | Outlook Express Mailbox | 2.7 |
| .MBX | Mecabricks 3D Scene | 2.0 |
| .MBZ | Moodle Backup FIle | 3.0 |
| .MC | Molecular Constructor Molecule File | 3.5 |
| .MC1 | MedCalc Data File | 3.0 |
| .MC2 | MasterCook 5 Cookbook File | 3.0 |
| .MC5 | Poser 5 Material File | 4.3 |
| .MC6 | Poser Material Collection File | 3.0 |
| .MC9 | Mastercam 9 Geometry File | 4.2 |
| .MCA | Minecraft Anvil Region | 4.5 |
| .MCADDON | Minecraft Pack Addon File | 4.3 |
| .MCAL | Monika After Story Calendar File | 3.0 |
| .MCAPM | Minecraft Anvil PocketMine Data File | 3.6 |
| .MCASSETSROOT | Minecraft Default Asset Identification File | 3.0 |
| .MCAT | Adobe Lightroom Catalog | 2.8 |
| .MCATTRIBUTES | Minecraft Attributes File | 2.0 |
| .MCD | Mathcad Document | 2.9 |
| .MCD | MiniCAD Design File | 3.5 |
| .MCDX | Mathcad Prime Document | 2.9 |
| .MCF | Watchtower Library Font File | 1.8 |
| .MCF | MasterCook 2 Cookbook File | 1.1 |
| .MCF | MARS Component File | 3.0 |
| .MCF | TMPGEnc Video Encoding Template | 2.0 |
| .MCF | Monocurl Project | 4.0 |
| .MCFI | Maya Initial Fluid Cache File | 4.3 |
| .MCFP | Maya Fluid Cache Playback File | 2.8 |
| .MCFUNCTION | Minecraft Function | 4.4 |
| .MCGAME | Minecraft Game Backup File | 4.3 |
| .MCHELP | MadCap DotNet Help File | 2.3 |
| .MCI | Media Control Interface File | 1.8 |
| .MCIF | MacroMolecular Crystallographic Information File | 2.7 |
| .MCL | Windows Media Center Link File | 3.9 |
| .MCLEVEL | Minecraft Map File | 4.0 |
| .MCMAC | MasterCook Mac Document | 2.5 |
| .MCMETA | Minecraft Java Edition Resource Pack Configuration File | 4.4 |
| .MCO | Live Messenger Winks File | 2.8 |
| .MCOLOR | Mine-imator Interface Color File | 1.5 |
| .MCP | CodeWarrior Project | 3.5 |
| .MCP | Megacubo Package | 2.8 |
| .MCPACK | Minecraft Bedrock Edition Add-On | 4.1 |
| .MCPR | Minecraft Replay Mod Replay | 3.7 |
| .MCPROJECT | Minecraft Bedrock Editor Project | 4.0 |
| .MCQ | VirusScan Quarantined Data | 2.0 |
| .MCR | 3ds Max Macroscript File | 3.4 |
| .MCR | ePSXe Memory Card File | 3.3 |
| .MCR | Minecraft Region File | 4.3 |
| .MCR | Tecplot Macro | 3.2 |
| .MCR | JitBit Macro Recorder Macro | 3.0 |
| .MCREATOR | MCreator Workspace | 4.5 |
| .MCRP | MobyExplorer Encrypted File | 2.2 |
| .MCS | Mathcad Image | 3.2 |
| .MCS | McAfee VirusScan Enterprise Update Script | 2.5 |
| .MCS | Minecraft: Legacy Console Edition World | 2.0 |
| .MCSERVER | Minecraft Server File | 4.1 |
| .MCSG | MagicaCSG 3D Model | 4.3 |
| .MCSP | My Craft Studio Project File | 4.0 |
| .MCSTRUCTURE | Minecraft Structure | 4.3 |
| .MCSX | My Craft Studio Professional File | 1.5 |
| .MCT | Windows Live Messenger Data File | 3.7 |
| .MCTEMPLATE | Minecraft World Template | 4.0 |
| .MCUSW | Nokia Firmware File | 3.8 |
| .MCW | Monitor Calibration Wizard File | 3.2 |
| .MCW | MacWrite II Document | 1.0 |
| .MCWORLD | Minecraft World Backup | 4.3 |
| .MCX | MICRO CADAM-X/6000 Model Data File | 4.3 |
| .MCX-8 | Mastercam X8 Model | 3.5 |
| .MCXE | MedicinesComplete Data File | 1.0 |
| .MCZ | Compressed Poser Material File | 3.6 |
| .MCZ | Malody Chart Zipped | 2.7 |
| .MD | Machine Description File | 3.4 |
| .MD | MDCD Compressed Archive | 2.8 |
| .MD | Moneydance Financial Data File | 2.2 |
| .MD | Sharkport Saved Game File | 2.3 |
| .MD | Markdown Documentation File | 4.0 |
| .MD | SEGA Mega Drive ROM | 3.2 |
| .MD | MuseData Musical Score | 3.3 |
| .MD0 | Alcohol Disk Image Segment 1 | 3.9 |
| .MD0 | Adobe Photoshop Metadata Cache File | 2.5 |
| .MD1 | GEAR CD Disc Image | 3.5 |
| .MD1 | Alcohol Disk Image Segment 2 | 3.0 |
| .MD2 | Quake 2 3D Model | 4.0 |
| .MD2 | Alcohol Disk Image Segment 2 | 2.8 |
| .MD3 | Quake 3 3D Model | 3.5 |
| .MD5 | MD5 Checksum File | 3.8 |
| .MD5.TXT | Message Digest 5 Hash File | 3.5 |
| .MD5ANIM | id Tech 4 Model Animation File | 4.3 |
| .MD5CAMERA | id Tech 4 Model Camera File | 4.0 |
| .MD5MESH | id Tech 4 3D Mesh File | 4.0 |
| .MD8 | GarageCUBE Modul8 Project | 1.5 |
| .MD8 | Mediator Project File | 2.5 |
| .MDA | Access Add-in | 4.1 |
| .MDB | Microsoft Access Database | 3.7 |
| .MDB | Avid Media Database | 2.6 |
| .MDBACKUP | iPhone Data Backup File | 2.8 |
| .MDBHTML | Microsoft Access Database HTML File | 2.3 |
| .MDC | Multi Dimension Cube File | 2.8 |
| .MDC | Merkaartor Document | 3.0 |
| .MDC | MidiCo Karaoke Audio File | 3.3 |
| .MDC | Minolta Camera Raw Image | 1.5 |
| .MDC | Wolfenstein Compressed 3D Model | 2.0 |
| .MDD | Point Oven Deformation Data File | 3.7 |
| .MDD | MDict Resource File | 3.0 |
| .MDDATA | iPhone Backup File | 4.0 |
| .MDDBS | Manic Digger Database | 4.0 |
| .MDE | Compiled Access Add-in File | 4.1 |
| .MDE | Archicad Education Module | 3.7 |
| .MDECK | MindManager Slide Deck | 2.0 |
| .MDEX | MIRCaM Data EXchange File | 4.3 |
| .MDF | Media Disc Image File | 4.0 |
| .MDF | Measurement Data Format File | 3.9 |
| .MDF | SQL Server Database | 4.1 |
| .MDF | Translation Memory Data Find File | 3.5 |
| .MDG | Digital Geometric Model File | 3.0 |
| .MDI | Microsoft Document Imaging File | 3.4 |
| .MDIMPORTER | Metadata Importer | 3.5 |
| .MDINFO | iPhone Backup Information File | 3.7 |
| .MDJ | StarUML Model File | 3.1 |
| .MDL | DigiTrakker Module | 3.0 |
| .MDL | MathWorks Simulink Model | 4.2 |
| .MDL | Flight Simulator Airplane Model | 3.8 |
| .MDL | Rational Rose Model File | 3.7 |
| .MDL | Half-Life Model File | 4.1 |
| .MDL | Warcraft 3 3D Model Text File | 4.2 |
| .MDL | Lectra Modaris Clothing Design File | 2.7 |
| .MDL | Luigi's Mansion 3D Model File | 2.6 |
| .MDL0 | Wii Model File | 3.2 |
| .MDM | Mario Dash Map File | 2.8 |
| .MDM | HLM Multivariate Data Matrix File | 3.2 |
| .MDM | Wolfenstein: Enemy Territory 3D Model | 3.5 |
| .MDMP | Windows Minidump | 4.2 |
| .MDMP | Mindclouds.com Save File | 3.0 |
| .MDN | Blank Access Database Template | 3.3 |
| .MDOWN | Markdown File | 4.3 |
| .MDP | Visual C++ 5 Workspace File | 3.3 |
| .MDP | FireAlpaca Image | 3.8 |
| .MDP | MediBang Paint Pro Image | 3.5 |
| .MDQ | Transformation Extender Database Definition File | 4.0 |
| .MDR | ModPlug Compressed Module | 3.5 |
| .MDS | Media Descriptor Sidecar File | 4.1 |
| .MDS | TestComplete Project File | 4.0 |
| .MDS | Wolfenstein Skeletal Animation 3D Model | 2.0 |
| .MDSX | MEGA Saved Session | 3.2 |
| .MDT | GeoMedia Access Database Template | 2.7 |
| .MDT | Microsoft Access Data File | 3.6 |
| .MDW | Access Workgroup | 3.7 |
| .MDX | dBASE Multiple Index File | 2.9 |
| .MDX | Rational XDE Model File | 2.8 |
| .MDX | Warcraft 3 Model File | 4.1 |
| .MDX | Extended Media Descriptor File | 3.9 |
| .MDX | MDict Dictionary File | 3.4 |
| .MDX | MDX Source Code File | 3.6 |
| .MDX | Wolfenstein: Enemy Territory Skeletal Animation | 4.3 |
| .MDZ | Access Database Template | 2.5 |
| .MDZIP | MagicDraw Project Archive | 3.0 |
| .ME | Readme Text File | 3.8 |
| .ME | Puppy Linux Partition Flag File | 2.8 |
| .ME | Temporary Delete Me File | 3.3 |
| .ME2MOD | Mass Effect 2 Modification File | 3.3 |
| .MEB | PRO100 3D Interior Catalog Element | 3.8 |
| .MED | Amiga MED Sound File | 3.6 |
| .MED | RSView Development Project | 3.5 |
| .MEDIA | Security Camera Video | 3.1 |
| .MEDUSA | Medusa Ransomware Encrypted File | 2.7 |
| .MEF | Mamiya RAW Image | 3.7 |
| .MEG | MEGA Data File | 4.3 |
| .MEGA | Megacubo XML Metafile | 3.9 |
| .MEGA | MEGAsync Temporary Data File | 4.3 |
| .MEL | Maya Embedded Language Script | 3.7 |
| .MELL | Mellel Word Processing File | 2.8 |
| .MELLEL | Mellel Document | 3.0 |
| .MELMOD | Melon Playground Mod | 4.1 |
| .MELON | BONEWORKS Custom Item | 3.8 |
| .MELSAVE | Melon Playground Saved Game | 3.8 |
| .MELTEM | Mellel Template | 2.0 |
| .MEM | Macro Editor Macro | 2.8 |
| .MEM | FoxPro Variable File | 3.5 |
| .MEM | Virtual Game Station Memory File | 2.8 |
| .MEM | Mnemosyne Card Collection | 2.0 |
| .MEM | Parallels Desktop Memory Dump File | 3.0 |
| .MEM | GreekToMe Memories File | 3.4 |
| .MEML | Minimalist & Extensive Markup Language File | 2.3 |
| .MEMO | Samsung Memo | 3.4 |
| .MENC | Windows Mobile Encrypted File | 3.9 |
| .MENU | Quake 3 Engine Menu File | 4.3 |
| .MENU | macOS Menu Extra | 4.0 |
| .MEO | MEO Encrypted Archive | 3.8 |
| .MEOTEMPO | MeoTempo Agenda | 2.0 |
| .MEP | Movavi Video Project | 3.5 |
| .MEPJ | Movavi Video Editor Project | 2.2 |
| .MEPS | Movavi Slideshow Maker Project | 3.3 |
| .MEPX | Movavi Video Project | 3.7 |
| .MER | RSView Development Runtime File | 3.4 |
| .MERLIN2 | Merlin Project File | 4.0 |
| .MERLINLICENSE | Merlin License File | 2.0 |
| .MERRY | Merry X-Mas Ransomware Encrypted File | 3.3 |
| .MESH | 3D Mesh Model | 4.0 |
| .MESH | DirectX Mesh File | 3.2 |
| .MESH | Godot Engine 3D Mesh File | 4.4 |
| .MESH | Ogre3D Mesh File | 3.7 |
| .MESHLIB | Godot Engine Mesh Library File | 3.6 |
| .MET | eMule Resource File | 4.1 |
| .MET | Presentation Manager Metafile | 2.6 |
| .META | RealPlayer Metafile | 3.8 |
| .META | Exient Metadata File | 3.0 |
| .METADATA_NEVER_INDEX | Spotlight Never Index File | 3.3 |
| .METAL | Metal Shading Language File | 4.0 |
| .METRICLOG | iOS Metric Log | 2.0 |
| .METRICLOG.ANON | Anonymized iOS Metric Log | 2.0 |
| .MEX | Macro Express File | 3.0 |
| .MF | Java Manifest File | 3.9 |
| .MF | METAFONT File | 3.5 |
| .MF | Panda Multifile | 4.1 |
| .MF4 | ASAM Measurement Data Format File | 2.8 |
| .MFA | Clickteam Fusion Application | 4.0 |
| .MFA | MobileFrame App File | 2.8 |
| .MFCRIBBON-MS | MFC Ribbon Definition XML File | 3.5 |
| .MFD | Music Finder Database | 2.8 |
| .MFE | MobileFrame Enterprise Data File | 1.5 |
| .MFI | HDClone MFI Disk Image | 3.5 |
| .MFIL | Blizzard Software Update File | 3.0 |
| .MFL | Mozilla FastLoad File | 4.5 |
| .MFL | ModFit LT Analysis Report File | 2.0 |
| .MFLINK | M-Files Desktop Shortcut | 1.5 |
| .MFO | Perl ModInfo Descriptor File | 3.8 |
| .MFO | MediaFace Online Saved File | 3.7 |
| .MFO | MobileFrame Object File | 3.5 |
| .MFP | Macromedia FlashPaper Document | 3.3 |
| .MFP | MediaFACE Project File | 4.1 |
| .MFP | MobileFrame Package | 3.0 |
| .MFP | Markforged Print | 3.0 |
| .MFS | MetFS Encrypted File System | 2.7 |
| .MFT | MediaFACE Project Template | 2.7 |
| .MFT | Kaspersky File Table | 3.8 |
| .MFU | MobileFrame Update File | 3.0 |
| .MFV | MobileFrame Device Pack File | 3.5 |
| .MFW | MobileFrame Workflow Pack File | 1.5 |
| .MFW | Mamiya Camera Raw File | 3.1 |
| .MFW | Clickteam Fusion Project | 2.0 |
| .MFW | MediaTek Smart-Clip Update File | 1.5 |
| .MFX | Clickteam Fusion Extension | 3.5 |
| .MGA | Manga Document | 3.0 |
| .MGC | MGCSoft Equation Illustrator File | 1.3 |
| .MGC | Microsoft Clip Organizer Media Catalog | 3.2 |
| .MGCB | Equation Illustrator Project File | 3.0 |
| .MGCB | MonoGame Content Reference | 2.0 |
| .MGD77 | MGD77 Data File | 2.0 |
| .MGDATABASE | MacGourmet Deluxe Database File | 3.3 |
| .MGF | Materials and Geometry Format | 3.8 |
| .MGJSON | After Effects Motion Graphics JSON file | 2.0 |
| .MGK | ImageMagick Configuration File | 3.4 |
| .MGL | Age of Empires 2 Replay File | 4.0 |
| .MGM | MGCSoft Equation Illustrator Macro | 2.2 |
| .MGM | MGMaps File | 2.0 |
| .MGMF | MindGenius Map File | 2.0 |
| .MGMT | MindGenius 2-3 Template | 2.0 |
| .MGMX | MindGenius XML Map File | 2.9 |
| .MGO | MacGourmet Recipe File | 3.5 |
| .MGOURMET | MacGourmet Deluxe Recipes | 4.0 |
| .MGOURMET3 | MacGourmet Deluxe 3 Recipes | 3.5 |
| .MGOURMET4 | MacGourmet Deluxe 4 Recipes | 2.8 |
| .MGS | MGCSoft Vector Shapes File | 1.5 |
| .MGSPOT | MacGourmet Spotlight MetaData File | 2.0 |
| .MGT | Musicnotes Guitar Guru Song File | 4.0 |
| .MGTHEME | MacGourmet Theme File | 2.0 |
| .MGTX | MindGenius XML Template File | 3.3 |
| .MGV | PSP Video File | 3.7 |
| .MGV | Yamaha MegaVoice File | 2.5 |
| .MGW | Mr. Game And Watch ROM File | 3.3 |
| .MGX | Age of Empires 2 Expansion Replay File | 3.3 |
| .MGX | Rise of Nations Saved Game | 4.1 |
| .MHM | Microsoft Hardware Macro | 3.0 |
| .MHM | MakeHuman Model | 4.0 |
| .MHP | Maths Helper Plus File | 2.6 |
| .MHR | Mega Hack v7 Pro Macro | 3.9 |
| .MHS | Xilinx XPS Hardware Specification File | 3.8 |
| .MHT | MHTML Web Archive | 3.4 |
| .MHTML | MIME HTML File | 3.6 |
| .MI4 | Audio Player Firmware File | 3.3 |
| .MIC | Image Composer File | 2.4 |
| .MICRO | TeslaCrypt 3.0 Ransomware Encrypted File | 3.5 |
| .MID | MIDI File | 4.0 |
| .MID | MapInfo Data File | 3.0 |
| .MID | Guitar Rhythm Data File | 3.0 |
| .MIDI | MIDI Music Data | 4.0 |
| .MIF | Management Information Format | 3.3 |
| .MIF | FrameMaker Interchange Format File | 4.0 |
| .MIF | MapInfo Interchange Format File | 3.7 |
| .MIFF | Magick Image | 2.5 |
| .MIG | Windows Migration Backup File | 3.7 |
| .MIGRATEDAPLIBRARY | Migrated Aperture Library | 1.7 |
| .MIGRATEDPHOTOLIBRARY | Migrated Photo Library | 2.3 |
| .MII | Wii Virtual Avatar File | 4.5 |
| .MIIGX | Savegame-manager-gx Nintendo Mii | 2.7 |
| .MILK | MilkDrop Winamp Plug-in Preset | 4.1 |
| .MIM | Multi-Purpose Internet Mail Message File | 3.3 |
| .MIM | Keyboard Layout Definition File | 2.8 |
| .MIME | Multi-Purpose Internet Mail Extension | 3.3 |
| .MIN | Okuma CNC Program File | 3.7 |
| .MIN | Mint Source File | 1.8 |
| .MIN | MAX Interchange Notation File | 3.2 |
| .MIN | Pokemon Mini File | 3.0 |
| .MINC | Pokemon Mini Color File | 1.0 |
| .MIND | MindMeister Map File | 1.9 |
| .MINDER | Minder Mind Map | 2.0 |
| .MINDNODE | MindNode Document | 2.0 |
| .MINE | Minecraft Classic World | 4.3 |
| .MINESWEEPERSAVE-MS | Minesweeper Saved Game | 2.8 |
| .MINI2SF | Nintendo DS Sound Information File | 3.8 |
| .MINIGSF | Game Boy Advance Song File | 4.0 |
| .MININCSF | NCSF Nintendo DS Audio File | 3.3 |
| .MINIPSF | Miniature PlayStation Sound Format File | 2.0 |
| .MINIPSF2 | Miniature PlayStation Sound Format File | 2.0 |
| .MINISO | Mini Image Destination File | 2.2 |
| .MINISSF | Miniature Saturn Sound Format | 1.0 |
| .MINIUSF | Nintendo 64 Song File | 2.8 |
| .MINT | Linux Mint Installer File | 4.5 |
| .MIO | MioEngine Application File | 2.5 |
| .MIO | WarioWare D.I.Y. Microgame File | 3.7 |
| .MIP | Multiple Image Print File | 2.5 |
| .MIPMAPS | Mipmap Texture File | 2.3 |
| .MIPROJECT | Mine-imator Project | 3.4 |
| .MIR | Mini-Image Ripper Disc Image | 2.2 |
| .MIS | Saved Game Mission File | 2.5 |
| .MIS | Marble Blast Mission File | 4.3 |
| .MISSION | Vega Strike Mission File | 3.8 |
| .MISSION | MissionMaker Project File | 1.5 |
| .MIT | MineEdit Inventory Template File | 2.7 |
| .MIUIGALLERY | MIUI Gallery Junk Data | 2.0 |
| .MIX | Microsoft Image Exchange File | 2.8 |
| .MIX | Command & Conquer Data File | 4.3 |
| .MIX | 3ds Max Motion Mixer File | 4.2 |
| .MIX | MotoGP Game File | 2.8 |
| .MJ2 | Motion JPEG 2000 Video | 3.7 |
| .MJBOOKTEMPLATE | MacJournal Book Template | 3.0 |
| .MJD | Adobe Acrobat MIME Encoded Job Definition File | 3.7 |
| .MJDOC | MacJournal Document | 3.0 |
| .MJK | Question File | 3.4 |
| .MJML | Mailjet Markup Language File | 3.3 |
| .MJP | MJPEG Video File | 3.0 |
| .MJPEG | Motion JPEG Video | 2.0 |
| .MJPG | Motion JPEG Video | 3.8 |
| .MJS | Node.js ES Module File | 4.0 |
| .MK | Makefile | 3.8 |
| .MK3D | Matroska 3D Video File | 3.3 |
| .MK4 | Schiller medilog ECG Raw Data File | 2.7 |
| .MKA | Matroska Audio | 4.0 |
| .MKCD | MakeCode Program | 3.8 |
| .MKD | Markdown Documentation File | 3.0 |
| .MKF | BlackBerry Encrypted Media Key File | 2.6 |
| .MKS | Matroska Elementary Stream File | 3.1 |
| .MKV | Matroska Video | 4.1 |
| .ML | ML Source Code File | 3.9 |
| .ML20 | MSN Webcam Recorder Video | 1.0 |
| .MLAPP | MATLAB Application Project | 3.0 |
| .MLAPPINSTALL | MATLAB App Installation Package | 2.0 |
| .MLB | Visual FoxPro Library | 3.7 |
| .MLB | MyLabel Designer Deluxe Project File | 3.3 |
| .MLC | Microsoft Language Interface Pack | 3.9 |
| .MLC | MobaLiveCD File | 3.3 |
| .MLK | MasterCook Look File | 3.5 |
| .MLL | Maya Plug-in | 3.2 |
| .MLM | MolMeccano File | 3.5 |
| .MLMODEL | Create ML Model | 3.0 |
| .MLMODELC | Compiled Create ML Model | 1.5 |
| .MLO | Monect PC Remote Layout | 2.8 |
| .MLP | Meridian Lossless Packing Audio File | 2.6 |
| .MLPKGINSTALL | Support Package Installer File | 3.1 |
| .MLPROJ | Create ML Project | 3.0 |
| .MLPROJ | MATLAB Archived Project | 3.3 |
| .MLS | Milestones Simplicity File | 3.9 |
| .MLS | CrystalPlayer Playlist | 4.0 |
| .MLT | Shotcut Project | 3.2 |
| .MLTBX | MATLAB Toolbox Package | 3.0 |
| .MLX | MATLAB Live Code File | 3.7 |
| .MM | Mind Map File | 3.5 |
| .MM | Objective-C++ Source File | 4.1 |
| .MM | NeXtMidas Macro File | 3.6 |
| .MM6 | Might and Magic VI Saved Game | 3.0 |
| .MM6 | Money Manager 6 File | 3.3 |
| .MM7 | Might and Magic VII Saved Game | 3.7 |
| .MM8 | Might and Magic VIII Saved Game | 1.3 |
| .MMA | Master Album Maker Photo Album File | 2.4 |
| .MMAP | MindManager Map | 3.4 |
| .MMAS | MindManager Map Theme File | 2.5 |
| .MMAT | MindManager Map Template | 3.0 |
| .MMB | My Model Binary | 1.0 |
| .MMBAK | Money Manager Expense & Budget Backup | 3.5 |
| .MMC | Microsoft Media Catalog | 4.0 |
| .MMCOLLECTION | Mail Manager Collection File | 2.0 |
| .MMDC | MediaMonkey Device Configuration File | 2.0 |
| .MME | Multi-Purpose Internet Mail | 3.6 |
| .MMF | Synthetic Music Mobile Application File | 2.7 |
| .MMF | Microsoft Message File | 2.5 |
| .MMF | Meal-Master Recipe File | 2.9 |
| .MMG | Model Master 3 Axis Flat File | 3.5 |
| .MMIP | MediaMonkey Installation Package | 3.3 |
| .MMJPROJECT | Music Maker JAM Project | 1.8 |
| .MML | FrameMaker Maker Markup Language File | 3.4 |
| .MML | Microsoft Clip Organizer File | 1.8 |
| .MML | MyMailList & AddressBook File | 2.0 |
| .MML | Mathematical Markup Language File | 4.3 |
| .MML | Map Markup Language File | 1.7 |
| .MMLP | Music Macro Language Project | 4.0 |
| .MMM | Music Maker Arrangement File | 3.2 |
| .MMM | Money Manager File | 3.1 |
| .MMM | MiraMon Maps File | 3.2 |
| .MMM | Multiple Master Metric Data File | 3.0 |
| .MMMACRO | Mini Mouse Macro File | 3.7 |
| .MMMP | MindManager Map Part File | 2.3 |
| .MMMS | MindManager Map Markers File | 2.5 |
| .MMO | Memory Map Overlay File | 3.3 |
| .MMP | MindManager Mind Map | 3.0 |
| .MMP | MixMeister Playlist | 3.3 |
| .MMP | Master Album Maker Project | 3.5 |
| .MMP | Symbian Project Specification File | 2.9 |
| .MMP | LMMS Project File | 3.3 |
| .MMP | MovieMator Video Editor Pro Project | 3.5 |
| .MMPP | Material Maker Paint Project | 2.3 |
| .MMPZ | LMMS Project File | 3.8 |
| .MMRC | MADRIX MIDI Remote Configuration | 3.9 |
| .MMS | Transformation Extender Map Source File | 2.8 |
| .MMU | myPM Merge Data File | 4.0 |
| .MMV | MicroMV Video File | 3.2 |
| .MMV | Magnex Firmware File | 3.0 |
| .MMV | MMSSTV Audio File | 3.5 |
| .MMW | AceMoney Money File | 2.7 |
| .MMW | Microsoft Clip Organizer Media Catalog File | 3.2 |
| .MMX | MindMapX Mindmap | 2.0 |
| .MMZ | MiraMon Compressed Map File | 3.0 |
| .MNC | My Notes Center Notebook | 3.5 |
| .MNC | AutoCAD Compiled Menu File | 3.3 |
| .MNG | Multiple-Image Network Graphic | 3.9 |
| .MNG | Yamaha PSR Disk Manager File | 2.1 |
| .MNH | Master Navigator Header File | 2.5 |
| .MNK | My Notes Keeper Notebook | 3.7 |
| .MNL | AutoCAD Menu LISP File | 3.5 |
| .MNM | Character Studio Marker Name File | 3.8 |
| .MNO | Macromedia Design Note | 3.5 |
| .MNO | Monopoly Saved Game | 2.0 |
| .MNR | AutoCAD Menu Resource File | 4.2 |
| .MNS | AutoCAD Interface Settings File | 3.3 |
| .MNT | Visual FoxPro Menu Memo | 3.8 |
| .MNU | TomTom Menu File | 1.5 |
| .MNU | AutoCAD Interface Layout File | 4.0 |
| .MNU | Adobe Photoshop Menu Customization File | 2.3 |
| .MNV | PlayStation Movie File | 3.6 |
| .MNX | Visual FoxPro Menu | 2.5 |
| .MNY | Microsoft Money File | 3.0 |
| .MO | Machine Object File | 3.7 |
| .MO1 | Odyemu Video Game | 1.0 |
| .MO3 | MO3 Audio | 3.5 |
| .MOB | MOBTV Video File | 3.6 |
| .MOBI | Mobipocket eBook | 3.9 |
| .MOBILECONFIG | Apple Mobile Configuration File | 3.9 |
| .MOBILEPROVISION | Xcode Mobile Provisioning Profile | 4.1 |
| .MOBIRISE | Mobirise Project File | 2.0 |
| .MOC | Qt Meta-Object Compiler File | 2.0 |
| .MOD | Music Module File | 3.6 |
| .MOD | Archicad Module | 1.2 |
| .MOD | Fortran Module | 2.9 |
| .MOD | Camcorder Recorded Video File | 2.6 |
| .MOD | Neverwinter Nights Module | 1.8 |
| .MOD | GRUB Module | 4.2 |
| .MOD | AMPL Model File | 1.7 |
| .MOD | Femap Model | 1.7 |
| .MOD | Go Module Definition | 4.0 |
| .MOD | V Package Definition | 2.5 |
| .MODD | Sony Video Analysis File | 2.8 |
| .MODE | Coda Syntax Mode File | 3.5 |
| .MODE | Ninja Kiwi Game Data File | 4.0 |
| .MODE1V3 | Xcode Project Data File | 2.2 |
| .MODE2V3 | Xcode Project Data File | 4.0 |
| .MODEL | CATIA 3D Model | 3.9 |
| .MODFEM | Femap Model | 4.0 |
| .MODPKG | Minecraft Pocket Manager File | 4.1 |
| .MODULE | Drupal Module File | 3.8 |
| .MOEF | Apple Motion Effect Project Template | 3.8 |
| .MOF | Managed Object Format File | 3.5 |
| .MOFF | Sony Video Data File | 2.3 |
| .MOFLEX | 3DS Mobiclip Video | 3.1 |
| .MOGG | Multitrack Ogg File | 3.6 |
| .MOGRT | Adobe Motion Graphics Template | 3.1 |
| .MOHO | Moho Animation Project | 3.4 |
| .MOHOACTION | Moho Action Document | 2.0 |
| .MOHOBRUSH | Moho Brush Document | 2.0 |
| .MOHOEXPORT | Moho Export Profile Document | 1.3 |
| .MOHOPROJ | Moho Document Data File | 1.5 |
| .MOHOSTYLE | Moho Style Document | 2.0 |
| .MOI | MOI Video File | 3.4 |
| .MOL | MDL Molfile | 3.3 |
| .MOL2 | SYBYL MOL2 File | 3.8 |
| .MOM | Managed Object Model | 3.1 |
| .MOMMA | Offspring Fling Replay File | 4.0 |
| .MON | MONOTONE Tracker Module | 1.5 |
| .MONEY | Money Data File | 2.5 |
| .MONEYWELL | MoneyWell Account File | 1.8 |
| .MONOPIC | Monodraw Picture | 3.0 |
| .MONOSNIPPET | Monodraw Snippet | 3.0 |
| .MONSTER | D&D 5e Statblock Generator Monster File | 3.3 |
| .MONTAGE | Montage Screenplay File | 3.2 |
| .MOO | COW Source Code | 3.0 |
| .MOOV | Apple QuickTime Movie | 3.2 |
| .MOS | Leaf Camera RAW Image | 3.6 |
| .MOSAIC | MacOSaiX Mosaic File | 4.0 |
| .MOT | LightWave Motion File | 1.8 |
| .MOTI | Apple Motion Title Project Template | 3.5 |
| .MOTN | Apple Motion Generator Project Template | 3.2 |
| .MOTR | Apple Motion Transition Project Template | 4.3 |
| .MOU | WinMount Compressed File | 2.6 |
| .MOUNTAIN | A Short Hike Saved Game | 3.5 |
| .MOV | Apple QuickTime Movie | 3.5 |
| .MOVIE | QuickTime Movie File | 3.6 |
| .MOVIE | Payday Movie File | 3.0 |
| .MOVIE | SGI Movie File | 1.5 |
| .MOVPKG | High-Resolution Lossless Media File | 3.3 |
| .MOX | ExtendSim Simulation Software Model | 3.4 |
| .MOX | Montax Imposer Template Document | 2.5 |
| .MOZ | Mozilla Cache File | 1.8 |
| .MOZLZ4 | Compressed Firefox User Profile Data File | 3.1 |
| .MP | Maya PLE Project File | 2.7 |
| .MP | LaTeX MetaPost File | 3.2 |
| .MP1 | MPEG-1 Layer 1 Audio File | 2.7 |
| .MP10 | Multisim 10 Project File | 3.7 |
| .MP11 | Multisim 11 Project File | 3.7 |
| .MP12 | Multisim 12 Project | 4.3 |
| .MP13 | Multisim 13 Project | 3.0 |
| .MP14 | Multisim 14 Project | 2.8 |
| .MP2 | MPEG Layer II Compressed Audio File | 2.8 |
| .MP2 | Heroes of Might and Magic II Map File | 2.6 |
| .MP21 | MPEG-21 Multimedia File | 1.8 |
| .MP21 | AXMEDIS MPEG-21 Object | 3.3 |
| .MP2M | Max Payne 2 Mod | 4.2 |
| .MP2S | Max Payne 2 Saved Game | 4.4 |
| .MP2V | MPEG-2 Video File | 3.5 |
| .MP3 | MP3 Audio | 4.1 |
| .MP4 | MPEG-4 Video | 3.9 |
| .MP4.INFOVID | Parrot AR Drone and Gyro Flyer Video | 3.7 |
| .MP4V | MPEG-4 Video | 3.7 |
| .MP5 | Chinese Portable Media Player Video | 3.4 |
| .MP7 | Multisim 7 Project File | 3.4 |
| .MP8 | Multisim 8 Project | 2.3 |
| .MP9 | Multisim 9 Project File | 1.9 |
| .MPA | MPEG-2 Audio File | 3.3 |
| .MPA2 | MPEG-2 Audio Stream | 2.0 |
| .MPB | MyPhoneExplorer Backup File | 3.2 |
| .MPC | Musepack Compressed Audio File | 2.8 |
| .MPC | Electronic Arts MPCh Video File | 2.7 |
| .MPC | WWE 2K Moveset Pack | 1.0 |
| .MPCPL | Media Player Classic Playlist | 4.1 |
| .MPD | File List Creator Playlist | 2.5 |
| .MPD | Microsoft Project Database | 3.5 |
| .MPD | MPEG-DASH Media Presentation Description | 4.0 |
| .MPD | Melodyne Project | 2.5 |
| .MPDCONF | Music Player Daemon File | 2.0 |
| .MPDP | MixPad Project File | 3.5 |
| .MPE | MPEG Movie File | 3.4 |
| .MPE1 | MediaPortal 1 Extension | 1.5 |
| .MPEG | MPEG Video | 3.8 |
| .MPEG1 | MPEG-1 Video File | 2.9 |
| .MPEG2 | MPEG-2 Video File | 3.4 |
| .MPEG4 | MPEG-4 File | 3.6 |
| .MPF | Microsoft Media Package FIle | 3.7 |
| .MPF | MainActor Project File | 1.7 |
| .MPF | MARS Project File | 4.3 |
| .MPG | MPEG Video | 3.5 |
| .MPG2 | MPEG-2 Video | 2.7 |
| .MPG4 | MPEG-4 Video File | 3.4 |
| .MPGA | MPEG-1 Layer 3 Audio File | 3.2 |
| .MPGINDEX | Adobe MPEG Index File | 3.0 |
| .MPH | Photostory Deluxe Project | 2.9 |
| .MPI | InstallJammer Project File | 2.6 |
| .MPJ | Minitab Project File | 3.8 |
| .MPJ | RoboHelp HTML Project | 2.0 |
| .MPJ | messiahStudio Project File | 2.6 |
| .MPJ | UNO R4 WiFi LED Animation Project | 3.0 |
| .MPK | Project64 Memory Pack File | 4.0 |
| .MPK | ArcGIS Map Package | 3.9 |
| .MPK | Makino Package | 4.0 |
| .MPKG | macOS Meta-Package | 3.9 |
| .MPKT | MOPEKS Trial File | 3.5 |
| .MPL | AVCHD Playlist File | 3.4 |
| .MPL | MPL2 Subtitles File | 3.0 |
| .MPLS | Blu-ray Movie Playlist File | 2.6 |
| .MPM | Max Payne Mod | 4.3 |
| .MPN | Mophun Video Game | 2.0 |
| .MPO | Multi Picture Object File | 3.5 |
| .MPP | Microsoft Project File | 3.5 |
| .MPP | MobileFrame Project Publisher File | 3.4 |
| .MPPZ | MagicPlot Project File | 4.3 |
| .MPQ | Blizzard Mo'PaQ File | 4.1 |
| .MPQE | Blizzard Encrypted Mo'PaQ File | 3.3 |
| .MPR | Visual FoxPro Generated Menu Program | 2.6 |
| .MPR | FileMaker Dictionary File | 3.4 |
| .MPR | Direct Mail Project File | 1.5 |
| .MPROJ | Mine-imator Project | 3.6 |
| .MPROJECT | Merlin Project | 4.6 |
| .MPS | Pocket Streets Map File | 3.0 |
| .MPS | Max Payne Saved Game | 3.6 |
| .MPS | Mathematical Programming System File | 3.5 |
| .MPSUB | MPlayer Subtitles File | 3.7 |
| .MPT | Microsoft Project Template | 3.3 |
| .MPTM | OpenMPT Module | 3.5 |
| .MPU | MPEG Layer 3 Audio File | 3.7 |
| .MPV | MPEG-2 Elementary Stream Video | 3.6 |
| .MPV2 | MPEG-2 Video Stream | 3.4 |
| .MPW | Microsoft Project Workspace File | 3.3 |
| .MPWS | MathPiper Worksheet | 3.0 |
| .MPX | FoxPro Compiled Program Menu | 3.8 |
| .MPX | Microsoft Project Exchange File | 3.5 |
| .MPY | MicroPython Module | 1.3 |
| .MPZ | Miradi Project File | 3.3 |
| .MPZ | Red Eclipse Map File | 3.5 |
| .MPZIP | Multisim Pack File | 2.0 |
| .MP_ | Mobile Phone Sound File | 4.0 |
| .MQ | Message Queuing Message Log File | 1.0 |
| .MQ4 | MQL4 Source Code File | 3.4 |
| .MQ5 | MQL5 Source Code File | 4.4 |
| .MQH | MetaTrader Include File | 2.9 |
| .MQO | Metasequoia Document | 3.8 |
| .MQV | Sony Movie Format | 2.2 |
| .MRB | Multiple Resolution Bitmap File | 2.4 |
| .MRC | mIRC Script File | 3.4 |
| .MRC | MIUI Theme Content Package | 3.0 |
| .MRF | Mouse Recorder File | 3.1 |
| .MRG | MySQL Merge File | 3.0 |
| .MRG | Now Contact Merge Template | 3.5 |
| .MRIMG | Macrium Reflect Disk Image | 3.6 |
| .MRK | DPOF Auto Print Order File | 3.6 |
| .MRM | MIUI Theme Metadata | 2.0 |
| .MRML | 3D Slicer Scene Description File | 3.8 |
| .MRP | Mythroad Platform File | 3.6 |
| .MRP | Morphine Preset File | 2.0 |
| .MRPACK | Modrinth Minecraft Modpack | 3.3 |
| .MRS | GunZ Game Data File | 4.1 |
| .MRSN | Mersenne Source Code File | 3.6 |
| .MRT | Stimulsoft Report File | 3.7 |
| .MRW | Minolta Raw Image | 3.2 |
| .MRXS | MIRAX Virtual Slide File | 2.1 |
| .MRY | Tomboy Industrees Memory File | 3.5 |
| .MS | 3ds Max Script | 3.0 |
| .MS | Maxwell Script | 3.5 |
| .MS-ONE-STUB | Microsoft OneNote Stub | 2.0 |
| .MS-TNEF | MS Transport Neutral Encapsulation Format | 2.7 |
| .MS1 | VirtualBus Map File | 2.0 |
| .MS10 | Multisim 10 Circuit Design File | 4.5 |
| .MS11 | Multisim 11 Circuit Design File | 3.1 |
| .MS12 | Multisim 12 Circuit Design File | 3.0 |
| .MS13 | Multisim 13 Circuit Design File | 3.9 |
| .MS14 | Multisim 14 Circuit Design File | 4.2 |
| .MS3D | MilkShape 3D Model | 3.7 |
| .MS7 | Multisim 7 Circuit Design File | 2.0 |
| .MS8 | Multisim 8 Circuit Design File | 2.0 |
| .MS9 | Multisim 9 Circuit Design File | 2.0 |
| .MSAPP | Power Apps Studio Canvas Application | 2.0 |
| .MSAV | Mindustry Save File | 4.5 |
| .MSB | Oracle Binary Message File | 4.2 |
| .MSBT | Message Studio Binary Text File | 3.0 |
| .MSC | Microsoft Management Console Snap-in Control File | 4.0 |
| .MSC | MuseScore Composition File | 3.6 |
| .MSCH | Mindustry Schematic | 4.0 |
| .MSCT | MOPEKS Script File | 3.0 |
| .MSCX | MuseScore Music Score File | 4.1 |
| .MSCZ | MuseScore Compressed Score File | 4.0 |
| .MSCZ_SAVING | MuseScore Compressed Score Saving File | 1.0 |
| .MSD | Map Service Definition File | 3.7 |
| .MSDVD | Windows DVD Maker Project File | 4.0 |
| .MSE | 3ds Max Encrypted MAXScript File | 3.5 |
| .MSE | MediaShow Slideshow Project File | 3.9 |
| .MSF | Mail Summary File | 4.1 |
| .MSF | Miranda IM Skin File | 1.3 |
| .MSF | Blue Card Manager Merit Badge Mastersheet File | 2.3 |
| .MSG | Outlook Message Item File | 3.4 |
| .MSG | Fallout In-Game Message File | 3.4 |
| .MSH | Visual Communicator Project File | 2.3 |
| .MSH | Orbiter 3D Mesh File | 3.4 |
| .MSH | Godot Engine 3D Mesh File | 3.6 |
| .MSH1XML | Monad Display Configuration File | 2.3 |
| .MSHA | Microsoft Help Asset File | 3.3 |
| .MSHC | Microsoft Help Container File | 3.3 |
| .MSHI | Microsoft Help Index File | 3.3 |
| .MSI | Windows Installer Package | 3.7 |
| .MSIF | MyLabel Designer Deluxe Data File | 2.9 |
| .MSIM | mSecure Password Manager Backup File | 1.8 |
| .MSIX | MSIX Installer Package | 3.7 |
| .MSIXBUNDLE | Windows 10 App Bundle | 3.8 |
| .MSIXUPLOAD | Windows 10 App Upload Bundle | 3.3 |
| .MSK | Paint Shop Pro Mask File | 3.1 |
| .MSKN | MediaMonkey Skin File | 3.0 |
| .MSL | Mapping Specification Language File | 2.0 |
| .MSL | Magick Scripting Language File | 3.5 |
| .MSM | Windows Installer Merge Module | 3.8 |
| .MSM | Multisim Circuit Design File | 4.2 |
| .MSM | My Singing Monsters Composer Song | 3.6 |
| .MSMPL_ALL | Korg microSAMPLER Backup File | 2.0 |
| .MSMPL_BANK | Korg microSAMPLER Bank Data File | 3.0 |
| .MSN | Host Blocking File | 4.0 |
| .MSO | Outlook In-Line Office Attachment | 2.7 |
| .MSO | Microsoft Office Macro Reference File | 3.3 |
| .MSP | Windows Installer Patch | 3.6 |
| .MSP | Microsoft Paint Bitmap Image | 3.7 |
| .MSP | MaxScript Page File | 2.4 |
| .MSP | ClarisWorks Dictionary File | 2.0 |
| .MSPROJ | Message Studio Project | 3.0 |
| .MSPX | Microsoft ASP.NET Web Page | 2.9 |
| .MSRCINCIDENT | Windows Remote Assistance Invitation | 3.2 |
| .MSS | Microprocessor Software Specification File | 3.3 |
| .MSS | MyScreenSaver Builder File | 3.3 |
| .MSS | CartoCSS Map Stylesheet | 2.5 |
| .MSS | MuseScore Style Definition | 2.0 |
| .MSSCMP | Miles Sound System Compressed Archive | 1.3 |
| .MSSTYLE | Windows XP Unsigned Style | 2.8 |
| .MSSTYLES | Windows XP Style | 3.9 |
| .MST | Windows Installer Setup Transform File | 4.1 |
| .MST | Corel Presentations Master Template File | 4.0 |
| .MSTBIN | Donkey Kong Country Tropical Freeze Message Table | 3.0 |
| .MSTXT | Message Studio Text File | 3.7 |
| .MSU | Windows Vista Update Package | 4.2 |
| .MSV | Memory Stick Voice File | 1.6 |
| .MSV | Motorsport Manager Save File | 2.0 |
| .MSW | Painter Color Mixer Swatches | 2.3 |
| .MSWMM | Windows Movie Maker Project | 3.9 |
| .MT | Minetest World Metadata | 2.8 |
| .MT2 | MadTracker 2 Module | 3.3 |
| .MT2S | MPEG-2 Transport Stream File | 3.1 |
| .MT9 | MT9 Audio File | 2.7 |
| .MTA | Samsung AllShare Metadata File | 3.1 |
| .MTC | Make the Cut! Project | 3.0 |
| .MTD | Musicnotes Digital Sheet Music File | 4.2 |
| .MTE | MadTracker 2 Envelope | 2.6 |
| .MTE | Mp3tag Export Configuration File | 3.5 |
| .MTF | Motorola Theme File | 3.3 |
| .MTF | MasterCook Tips File | 3.3 |
| .MTF | Translation Memory Translations File | 2.8 |
| .MTF | Mortality Table File | 2.4 |
| .MTF | Multi Tracker File | 3.6 |
| .MTFF | MadgeTech Data Logger Report | 3.4 |
| .MTGL | Maltego Graph | 3.3 |
| .MTH | Derive Math File | 3.1 |
| .MTHD | MOPEKS Method File | 4.0 |
| .MTI | MadTracker Instrument | 4.2 |
| .MTL | OBJ Material Template Library File | 3.5 |
| .MTM | MultiTracker Module | 4.3 |
| .MTM | Macrofocus TreeMap File | 2.0 |
| .MTO | FastCAM MTO Text File | 4.0 |
| .MTP | MadTracker 2 Pattern | 3.6 |
| .MTQ | Mustaq Data File | 3.0 |
| .MTS | AVCHD Video | 3.5 |
| .MTS | MadTracker 2 Sample File | 2.7 |
| .MTS | MEGA Tree Session File | 3.3 |
| .MTT | MetadataTouch Template | 2.5 |
| .MTV | MTV Video Format File | 3.2 |
| .MTW | Minitab Worksheet File | 2.6 |
| .MTX | MadTracker 2 Extension | 3.2 |
| .MTX | MetaStream Scene File | 3.5 |
| .MTXT | MOPEKS Text File | 3.0 |
| .MTZ | Compressed MetaStream Scene File | 4.1 |
| .MTZ | MIUI Theme | 3.9 |
| .MTZU | MTZU Ransomware Encrypted File | 2.8 |
| .MU | Kerbal Space Program Mesh File | 4.2 |
| .MU3 | Myriad Packed Musical Score | 3.3 |
| .MUD | Textease Multi User Database | 2.7 |
| .MUD | Mudbox 3D Scene File | 3.5 |
| .MUF | Alpha Five License File | 3.0 |
| .MUI | Multilingual User Interface File | 4.0 |
| .MUI | Myriad User Instrument File | 4.1 |
| .MUI_CCCD5AE0 | Hid User Library | 3.7 |
| .MUL | Deus Ex: HR Multiplexed Audio File | 2.0 |
| .MUL | Ultima Online Multi File | 3.0 |
| .MULIB | Muse Library File | 3.5 |
| .MUM | Windows Vista Update Package | 3.4 |
| .MUM | MATLAB Unit Operation Model File | 2.4 |
| .MUN | Windows System Resource Archive | 2.0 |
| .MUP | Music Publisher Score | 2.5 |
| .MUS | Finale Notation File (Legacy) | 3.6 |
| .MUS | Electronic Arts Game Music File | 3.4 |
| .MUS | Minecraft Music File | 3.6 |
| .MUS | Doom Music File | 2.9 |
| .MUSA | Aleph One Music File | 3.7 |
| .MUSE | Adobe Muse Website Project | 3.0 |
| .MUSICDB | Apple Music Library | 3.7 |
| .MUSICLIBRARY | Apple Music Library | 4.0 |
| .MUSICXML | MusicXML File | 3.3 |
| .MUSX | Finale Notation File | 3.1 |
| .MUX | Trackmania Music File | 3.6 |
| .MUX | Myriad Stand-Alone Music Score | 3.4 |
| .MUZ | MUZ Audio File | 2.8 |
| .MV | MivaScript File | 3.2 |
| .MV | SGI Video File | 3.5 |
| .MV8 | Interplay MVE Video File | 3.0 |
| .MVB | Multimedia Viewer Book Source File | 2.4 |
| .MVC | Movie Collector Catalog | 3.1 |
| .MVC | MivaScript Compiled File | 2.9 |
| .MVD | Movie Studio Movie | 3.8 |
| .MVD | MindView OS X Document | 2.5 |
| .MVDX | MindView Windows Document | 3.7 |
| .MVE | Interplay MVE Video File | 3.0 |
| .MVEX | Muvee autoProducer 6 Project File | 3.3 |
| .MVG | Magick Vector Graphics File | 3.5 |
| .MVI | AutoCAD Movie Command File | 3.8 |
| .MVI | Motion Pixels MVI1 Video File | 1.0 |
| .MVM | Photostory Deluxe Slideshow | 2.0 |
| .MVP | MAGIX Video Project | 3.6 |
| .MVP | MoviePlus Project File | 3.4 |
| .MVR | IBM HotMedia Multimedia File | 2.4 |
| .MVS | Microchip Verification Specification File | 2.7 |
| .MVTX | MindView Template | 2.7 |
| .MVX | Multimedia Fusion Movement Extension | 3.5 |
| .MVY | Video easy Project File | 2.0 |
| .MV_ | Movie Studio Project Backup | 2.0 |
| .MW | MacWrite Text Document | 2.9 |
| .MW | Maple Worksheet | 2.7 |
| .MWAND | GarageBand MagicMentor Template | 3.0 |
| .MWB | MySQL Workbench Document | 3.5 |
| .MWD | Mariner Write Document | 3.0 |
| .MWD | MyWorkDrive Client Shortcut File | 2.8 |
| .MWF | Translation Memory Word Find File | 2.5 |
| .MWF | MapGuide Author Map Window File | 3.7 |
| .MWL | Super Mario World Level | 3.8 |
| .MWL | XMS Print Layout File | 4.0 |
| .MWLIC | MoneyWell License File | 2.0 |
| .MWM | Space Engineers 3D Model File | 3.9 |
| .MWM | Maps.me Map | 3.0 |
| .MWP | Lotus Word Pro SmartMaster File | 3.0 |
| .MWPS | Need for Speed: Most Wanted Car Attributes File | 4.2 |
| .MWS | MWave DSP Synth Instrument Extract | 1.0 |
| .MWS | Maple Classic Worksheet | 2.6 |
| .MWX | MicroWorlds EX File | 2.3 |
| .MWX | MapGuide Author Map Window XML File | 3.3 |
| .MX | Mathematica Serialized Package File | 3.3 |
| .MX2 | Heroes of Might and Magic II Expansion Map File | 4.0 |
| .MX3 | Mixcraft 3 Audio Project | 3.5 |
| .MX4 | Mixcraft 4 Audio Project | 3.5 |
| .MX5 | Mixcraft 5 Audio Project | 3.2 |
| .MX5TEMPLATE | Mixcraft 5 Audio Project Template | 3.5 |
| .MX8 | Mixcraft 8 Project | 3.0 |
| .MX9 | Mixcraft 9 Project | 2.5 |
| .MXAD | Mandelbrot Explorer All Data File | 4.0 |
| .MXADDON | Maxthon Add-On File | 3.6 |
| .MXC | MaxiCompress Compressed Archive | 3.0 |
| .MXC2 | MAGIX Cache File | 4.3 |
| .MXCS | Mandelbrot Explorer Color Scheme File | 3.5 |
| .MXD | ArcGIS Map Document | 3.5 |
| .MXDIC | Maxthon Dictionary File | 2.0 |
| .MXE | Macro Express Playable Macro | 3.3 |
| .MXF | Material Exchange Format | 3.7 |
| .MXF | Maxis Font File | 3.1 |
| .MXFR | Mandelbrot Explorer Fractal Region File | 3.5 |
| .MXG | Miinoto Exchangeable Group File | 4.0 |
| .MXI | Adobe Extension Information File | 3.5 |
| .MXI | Maxwell Image | 2.5 |
| .MXL | Compressed MusicXML File | 3.8 |
| .MXLIFF | Memsource XLIFF Localization File | 3.5 |
| .MXM | Maxwell Material File | 3.8 |
| .MXMF | Mobile XMF Ringtone File | 3.4 |
| .MXML | Flex MXML Component | 3.8 |
| .MXN | Miinoto Exchangeable Note File | 1.5 |
| .MXP | Adobe Extension Package | 3.4 |
| .MXPRJ | Maschine 2 Project | 3.0 |
| .MXS | Maxwell Studio Scene File | 3.8 |
| .MXS | Painter Color Mixer Pad | 3.5 |
| .MXSKIN | Maxthon Skin File | 2.7 |
| .MXT | ArcGIS Map Template | 4.0 |
| .MXV | MAGIX Video | 2.5 |
| .MYAPP | Visual Studio Application XML File | 3.4 |
| .MYCOLORS | Stardock MyColors Theme File | 4.4 |
| .MYD | MySQL Database Data File | 3.3 |
| .MYD | Everfine Photomoetric Results File | 1.0 |
| .MYDOCS | Send To My Documents | 3.2 |
| .MYI | MySQL MyISAM Index File | 3.3 |
| .MYL | MyLogo Maker Image | 3.0 |
| .MYM | MyMenuify Wii Theme File | 2.5 |
| .MYNOTESBACKUP | Keep My Notes Backup | 2.5 |
| .MYO | AccountEdge Company File | 3.1 |
| .MYR | Myriad Music File | 3.2 |
| .MYS | Vineyard Captured Video File | 3.7 |
| .MZ2 | MasterCook Recipe | 2.0 |
| .MZML | Mass Spectrometer Output File | 3.0 |
| .MZP | MAXScript Zip Package | 3.4 |
| .MZP | Mozart Percussion File | 2.8 |
| .MZP | WinArchiver Mountable Archive | 3.0 |
| .MZZ | Microsoft .NET Download Package | 3.0 |
All results listed.