| Extension |
Information |
|
M2TS
|
Blu-ray BDAV MPEG-2 Transport Stream (Blu-ray Disc Association) |
|
M3U
|
MP3 Playlist File |
|
M4A
|
MPEG-4 Audio Layer |
|
M4B
|
MPEG-4 Audio Layer Bookmarkable File |
|
M4P
|
Protected AAC File (Apple Inc.) |
|
M4V
|
MPEG-4 Video File |
|
MAC
|
Geometry II Plus Macro File (Cabrilog) |
|
MAC
|
Macro |
|
MAC
|
Dynamics GP Macro (Microsoft Corporation) |
|
MAN
|
Windows 2000 Mandatory User Profile |
|
MAN
|
Manual |
|
MAN
|
Blaise File (Statistics Netherlands) |
|
MAP
|
3Com Network Supervisor Network Topolgy Map (3Com) |
|
MAP
|
Pro/ENGINEER (PTC) |
|
MAP
|
Ingres Termcap Mapping File (Computer Associates International, Inc.) |
|
MAR
|
MSN Archive (Microsoft Corporation) |
|
MAR
|
WebSphere Business Modeler Process Model Template (International Business Machines Corp.) |
|
MAR
|
Mozilla Archive (Mozilla) |
|
MAT
|
MATLAB Variables Binary File (The MathWorks, Inc.) |
|
MAT
|
3D Studio Material Library (Autodesk, Inc.) |
|
MAT
|
Freelancer Model Textures File (Microsoft Corporation) |
|
MATROSKA
|
|
|
MAX
|
OrCAD Layout File (Cadence Design Systems, Inc.) |
|
MAX
|
3ds Max Studio Max Scene (Autodesk, Inc.) |
|
MAX
|
PaperPort Scanned Image (ScanSoft Inc.) |
|
MB
|
Mathematica Binary File (Wolfram Research, Inc.) |
|
MB
|
Maya Binary Scene (Alias Systems, a division of Silicon Graphics Limited) |
|
MB
|
MapBasic Program (MapInfo Corporation) |
|
MBB
|
MannaBook (MannaBook Software, Inc.) |
|
MBK
|
Atari (Atari) |
|
MBOX
|
Unix Mbox Format Mail File |
|
MBX
|
MapBasic Compiled Program (MapInfo Corporation) |
|
MBX
|
Database Index; dBASE Index |
|
MBX
|
Mailbox Message File |
|
MCD
|
Bleem! Memory Card Save |
|
MCD
|
MinCAD 7 Drawing/Texture (Nemetschek North America Inc.) |
|
MCD
|
VectorWorks Drawing (Nemetschek) |
|
MCF
|
SignIQ Media Collection File (ImpulseLogic) |
|
MCF
|
MAX II Configuration File (Max B.V.) |
|
MCF
|
Media Container Format |
|
MCG
|
|
|
MCW
|
Word for Macintosh Document (Microsoft Corporation) |
|
MCW
|
MacWrite II Macintosh Text File |
|
MD
|
Chaos Desktop Metadata File (Chaos systems AB) |
|
MD
|
Mayura Draw Vector Drawing File (Mayura Software) |
|
MD
|
Mungyodance Data Pack (Empathetic Enteprises) |
|
MD5
|
fsum MD5 Checksum File (SlavaSoft Inc.) |
|
MD5
|
Checksum File for .SHN Audio |
|
MD5
|
IsoBuster MD5 Checksum (Smart Projects) |
|
MDB
|
ProWORX Nxt Memory Data (Schneider Electric) |
|
MDB
|
NEi Nastran Modal Database (Noran Engineering, Inc.) |
|
MDB
|
Access Database (Microsoft Corporation) |
|
MDC
|
MedDC Mail Pouch (Asier Technology Corporation) |
|
MDC
|
PowerPlay Power Cube (Cognos Incorporated) |
|
MDD
|
Database Designer for MySQL Database Diagram (MicroOLAP Technologies LTD) |
|
MDD
|
MacDraft Drawing (Microspot Ltd) |
|
MDE
|
Access MDE Database File (Microsoft Corporation) |
|
MDF
|
SQL Server Master Database File (Microsoft Corporation) |
|
MDF
|
Alcohol 120% CD Image File (Alcohol Software) |
|
MDI
|
Office Document Imaging File (Microsoft Corporation) |
|
MDL
|
Rational Rose Object Design Model (IBM) |
|
MDL
|
Flight Simulator 3D Model File (Microsoft Corporation) |
|
MDL
|
3D Design Plus Model |
|
MDM
|
Mario Dash Map File |
|
MDMP
|
WinXP Trouble Report (Microsoft Corporation) |
|
MDS
|
SeeYou Raster Map (Naviter) |
|
MDS
|
Media Descriptor CD Image File |
|
MDW
|
Access Workgroup Information (Microsoft Corporation) |
|
MDX
|
MidiEx MIDI System Exclusive Dump |
|
MDX
|
Borland Database Engine Index (Borland Software Corporation) |
|
MDX
|
Rational XDE Model (IBM) |
|
MEM
|
BPM Studio Saved Files for Sampler Functions (ALCATech) |
|
MEM
|
Clarion DOS Database Memo File (SoftVelocity) |
|
MEM
|
Mio Technology Mio Object (Mioplanet Technologies, Inc.) |
|
MENC
|
|
|
META
|
Black & White Creature Mind Meta Data (Microsoft Corporation) |
|
MF
|
MoonFish Track File (Bram Bos) |
|
MF
|
METAFONT Font Description File |
|
MF
|
Manifest Graphic |
|
MF
|
FrameMaker MakerFile (Adobe Systems Incorporated) |
|
MFL
|
Mozilla (Netscape) XUL FastLoad File (Mozilla) |
|
MFT
|
MetaFont Source Formatter Style File |
|
MHT
|
MHTML Document (Microsoft Corporation) |
|
MHTML
|
MHTML Document (Microsoft Corporation) |
|
MIB
|
MyInfo Topic File Backup (Milenix Software Ltd.) |
|
MIB
|
Management Information Base File |
|
MICROSOFT
|
|
|
MICROSTATION
|
|
|
MID
|
Musical Instrument Digital Interface MIDI-sequention Sound |
|
MID
|
MapInfo Interchange Format (MapInfo Corporation) |
|
MIDI
|
Musical Instrument Digital Interface MIDI-sequention Sound |
|
MIF
|
ImageMagick Machine Independent File Format Bitmap (ImageMagick Studio LLC) |
|
MIF
|
EarthLink E-mail Message Index (EarthLink, Inc.) |
|
MIF
|
Systems Management Server (SMS) Management Information Format (Microsoft Corporation) |
|
MIM
|
Multi-Purpose Internet Mail Extensions (MIME) File |
|
MIME
|
Multi-Purpose Internet Mail Extensions (MIME) File |
|
MIX
|
Picture It! Multilayer Picture File (Microsoft Corporation) |
|
MIX
|
PhotoDraw 2000 Multilayer Picture File (Microsoft Corporation) |
|
MIX
|
Command & Conquer Picture/Sound File (Westwood Studios) |
|
MKV
|
Matroska Video Stream (Matroska Association) |
|
MLM
|
Novel Groupwise E-mail File |
|
MM
|
FreeMind Mind Map |
|
MM
|
Meme Virtual Reality World (Immersive Systems Inc.) |
|
MM
|
Xcode Core C Program (Apple Inc.) |
|
MMAP
|
MindManager Brainstorm and Process Control Map (Mindjet) |
|
MMC
|
MicroCase Boundary File (Cengage Learning) |
|
MMC
|
Clipart DLLbackup Autoshape File (Microsoft Corporation) |
|
MMC
|
Office Media Content |
|
MMF
|
AppMind Message Management File (Appmind Software AB) |
|
MMF
|
MathMagic Equation File (InfoLogic, Inc.) |
|
MMF
|
Yamaha SMAF Synthetic Music Mobile Application Format (Yamaha Corporation of America) |
|
MMP
|
MicroMedia Playlist (Demonic Software) |
|
MMP
|
Grand Theft Auto Multiplayer Map File (Rockstar Games) |
|
MMP
|
Bravado Board Output Video Format |
|
MMS
|
JPEG-6b File |
|
MMS
|
Miles Sound Tools |
|
MNO
|
Macromedia Design Notes |
|
MO
|
GNU Gettext Machine Object File (Free Software Foundation) |
|
MO
|
Dymola Simulation |
|
MOD
|
PHP Source Code |
|
MOD
|
Amiga and PC Tracker Module |
|
MOD
|
CATIA Model File (Dassault Systèmes) |
|
MOF
|
MSinfo (Microsoft Corporation) |
|
MOF
|
Systems Management Server (SMS) Managed Object Format (Microsoft Corporation) |
|
MOI
|
JVC Everio Digital Audio File (JVC Americas Corp) |
|
MOI
|
French Text File |
|
MOV
|
QuickTime Video Clip (Apple Inc.) |
|
MOVIE
|
QuickTime Movie (Apple Inc.) |
|
MP
|
EARS Component File |
|
MP
|
Maya Personal Learning Edition (Alias Systems, a division of Silicon Graphics Limited) |
|
MP
|
cGPSmapper Polski Format Mapy -- Polish Map Format (Stanislaw Kozicki) |
|
MP2
|
MPEG Audio Stream, Layer II |
|
MP2
|
Masterpoint Red Points File (ABF Masterpoint Centre) |
|
MP3
|
Masterpoint Green Points File (ABF Masterpoint Centre) |
|
MP3
|
MPEG Audio Stream, Layer III |
|
MP3
|
AlbumWrap Wrapped Music File Archive (Infamus Software LLC) |
|
MP4
|
MPEG-4 Video File |
|
MPA
|
E-Designer (Beijer Electronics) |
|
MPB
|
Maintenance Parts Bin Database (Nhuntsoftware) |
|
MPB
|
MyPhoneExplorer Backup File (Franz Josef Wechselberger) |
|
MPC
|
Musepack Audio File |
|
MPC
|
Collectorz.com MP3 Collector MP3 Collection Data (Collectorz.com) |
|
MPD
|
My Digital Photos Filmstrip (Super Win Software) |
|
MPD
|
File List Creator MP3 Playlist (WenSoftware) |
|
MPD
|
ABC Programming Language Monadic Predicate |
|
MPEG
|
MPEG 1 System Stream |
|
MPF
|
Design Gallery (Microsoft Corporation) |
|
MPF
|
MosASCII Discontinued Project Workspace File (Robert DeFusco) |
|
MPF
|
MainActor Project (MainConcept AG) |
|
MPG
|
MPEG 1 System Stream |
|
MPG
|
ProgDVBR MPEG2 Video File |
|
MPLS
|
Blu-ray Movie Playlist Information (Blu-ray Disc Association) |
|
MPP
|
Project Project (Microsoft Corporation) |
|
MPP
|
Musepack Audio File |
|
MPQ
|
Blizzard Game Data File (Blizzard Entertainment) |
|
MPS
|
MapSource GPS Mapping Interface Waypoints (Garmin Ltd.) |
|
MPS
|
Pocket Streets Map File (Microsoft Corporation) |
|
MPS
|
Casio PDL Pocket Streets Map (Casio Computer Co., Ltd.) |
|
MPT
|
Multipage TIFF Bitmap |
|
MPX
|
Alpha Five Temporary Index Information (Alpha Software, Inc.) |
|
MPX
|
RCA/Lyra Handheld MP3 Player File (RCA) |
|
MRC
|
Bibliographic Data Format |
|
MRK
|
TAPCIS Marked Messsage Commands |
|
MRK
|
CSI Markup File |
|
MRK
|
SleepScan and Ceegraph Stores Technician (User) Comments (Bio-logic Systems Corp.) |
|
MS
|
3ds Max Script Source Code (Autodesk, Inc.) |
|
MS
|
Maple Worksheet (Maplesoft, a Division of Waterloo Maple Inc.) |
|
MSC
|
Microsoft Management Console Snap-in Control File (Microsoft Corporation) |
|
MSF
|
Netscape Mail Mail Summary File (Netscape) |
|
MSF
|
EarthLink E-mail Message File (EarthLink, Inc.) |
|
MSF
|
Thunderbird Mail Summary File (Mozilla Corporation) |
|
MSG
|
PMMail 2000 E-mail Message File (Blueprint Software Works) |
|
MSG
|
OS/2 Help Message File (IBM) |
|
MSG
|
Exchange Mail Message (Microsoft Corporation) |
|
MSI
|
Cerius2 (Accelrys Software Inc.) |
|
MSI
|
Windows Installer File (Microsoft Corporation) |
|
MSI
|
TruNEST Nesting Data (Magestic Systems, Inc.) |
|
MSM
|
Windows Installer Merge Module (Microsoft Corporation) |
|
MSM
|
Multisim Circuit Diagram (National Instruments Corporation) |
|
MSO
|
Math Script Object File |
|
MSO
|
MedlySound Sound/Module |
|
MSO
|
Word OLE Web Page Storage Stream (Microsoft Corporation) |
|
MSP
|
Windows Installer Patch (Microsoft Corporation) |
|
MSP
|
Paint Bitmap (Microsoft Corporation) |
|
MST
|
Visual Test Source File |
|
MST
|
Windows SDK Setup Transform Script (Microsoft Corporation) |
|
MSU
|
Vista Hotfix Installer Package (Microsoft Corporation) |
|
MSU
|
Blaise File (Statistics Netherlands) |
|
MSV
|
MyStars! Saved View (Relative Data, Inc.) |
|
MSV
|
Memory Stick Compressed Voice File (Sony Corporation of America) |
|
MTA
|
Flight Simulator Maintenance File (Microsoft) |
|
MTD
|
Digital Sheet Music (Big Endian) (Musicnotes, Inc.) |
|
MTF
|
Darkstone Archive |
|
MTF
|
MicroSurfer File |
|
MTF
|
Mediatek Font |
|
MTS
|
AVCHD Video Clip - MPEG Transport Stream |
|
MTS
|
MadTracker Sample File |
|
MTV
|
MTV Video |
|
MTX
|
MadTracker Extension File |
|
MTX
|
Adobe Atmosphere File (Adobe Systems Incorporated) |
|
MTX
|
Marked Text Source File |
|
MUI
|
Amiga MUI Default Class/Library (SASG) |
|
MUS
|
SCORE Music Publishing System Music Notation File (San Andreas Press) |
|
MUS
|
Harmony Assistant, Melody Assistant, Myriad Music plug-in, Melody Player Music File (MYRIAD) |
|
MUS
|
Infinity Game Engine Music Control File (BioWare Corp.) |
|
MUSIC
|
Unknown Apple II File (found on Golden Orchard Apple II CD Rom) |
|
MV
|
IRIX makemovie Command Compressed Movie (Silicon Graphics, Inc.) |
|
MVL
|
Interplay Multimedia File |
|
MVL
|
WinMaven Saved Log File (David R. Snow) |
|
MXD
|
ArcMap GIS Project File (Map) (ESRI) |
|
MXD
|
MX Editor Remote Control Device Configuration File |
|
MXF
|
Material Exchange Format File |
|
MXF
|
SimCity Maxis Font File (Electronic Arts, Inc.) |
|
MXF
|
MX Editor Remote Control File |
|
MXM
|
MixMeister BPM Calculation File (MixMeister Technology) |
|
MXM
|
Mindex Master Index File for a Category |
|
MXP
|
3-matic Project File (Materialise NV) |
|
MYD
|
MySQL Database (MySQL AB) |
|
MZP
|
MOZART Percussion File (David Webber) |
