The X
extension name file type Classification
LXK Lexicon Link-up File data file
LY LilyPond File data file
LYT Adminsoft Document Layout File data file
M Mathematica Input File data file
M12 Schiller medilog ECG Raw Data File data file
M77T MGD77T Data File data file
MACBIN Macbinary Encoded File data file
MAF Mutation Annotation Format File data file
MAG Magic Circuit Layout File data file
MAGIC SlideMagic Presentation File data file
MAI Microsoft Mail File data file
MAP Weather Defender Map data file
MAP Rigs of Rods Key Assignments File data file
MAPSDATA iOS Maps Data File data file
MAS MEGA Alignment Sequence File data file
MAT MATLAB MAT-File data file
MBA MailNavigator Mail Box Archive data file
MBA MyBoard Activity File data file
MBB ManaBook Book File data file
MBD Multimedia Builder Project File data file
MBG Microsoft Mailbag data file
MBG Mailbag Assistant Mailbox File data file
MBL Logger Pro Data File data file
MBP MediaShow Burning Project File data file
MBSA Microsoft Baseline Security Analyzer File data file
MBT Blue Card Manager Merit Badge Template File data file
MBX Outlook Express Mailbox data file
MC1 MedCalc Data File data file
MCAT Adobe Lightroom CC Catalog File data file
MCD Mathcad Document data file
MCDX Mathcad Prime Document data file
MCIF MacroMolecular Crystallographic Information File data file
MCMAC MasterCook Mac Document data file
MCP Megacubo Package data file
MCT Windows Live Messenger Data File data file
MCUSW Nokia Firmware File data file
MCXE MedicinesComplete Data File data file
MD Moneydance Financial Data File data file
MD8 Mediator Project File data file
MD8 GarageCUBE Modul8 Project data file
MDB Avid Media Database data file
MDC Multi Dimension Cube File data file
MDD MDict Resource File data file
MDEX MIRCaM Data EXchange File data file
MDF Measurement Data Format File data file
MDJ StarUML Model File data file
MDL MathWorks Simulink Model data file
MDL Rational Rose Model File data file
MDM HLM Multivariate Data Matrix File data file
MDQ Transformation Extender Database Definition File data file