Multithreaded SQL database (client)

https://mariadb.org/

Multithreaded SQL database (server)

https://mariadb.org/

MARISA: Matching Algorithm with Recursively Implemented StorAge

https://github.com/s-yata/marisa-trie

SEGA Master System and Game Gear emulator for X

https://fms.komkon.org/MG/

Flat design theme for GTK 3, GTK 2, and Gnome-Shell

https://github.com/vinceliuice/Matcha-gtk-theme

Collection of backgrounds for MATE

https://mate-desktop.org/

"meta-port" for the MATE base integrated X11 desktop

https://mate-desktop.org/

Control center for MATE project

https://mate-desktop.org/

Additional UI API for MATE

https://mate-desktop.org/

Collection of icons for the MATE desktop

https://mate-desktop.org/

Implementation of the FreeDesktop Desktop Menu Spec

https://mate-desktop.org/

Send small notifications to your desktop

https://mate-desktop.org/

Panel component for the MATE Desktop

https://mate-desktop.org/

MATE frontend to the PolicyKit framework

https://mate-desktop.org/

Session component for the MATE desktop

https://mate-desktop.org/

MATE settings daemon

https://mate-desktop.org/

Collection of themes and icons for MATE

https://mate-desktop.org/

MATE users guide

Material Design icon set from Google

https://jossef.github.io/material-design-icons-iconfont

Material Design Webfont

https://materialdesignicons.com/

Cross-browser JavaScript display engine for mathematics

https://www.mathjax.org/

Cross-browser JavaScript display engine for mathematics

https://www.mathjax.org/

Library for reading and writing Matlab MAT files

https://sourceforge.net/projects/matio/

Open source Slack-alternative in Golang and React

https://mattermost.org/

Webapp of Mattermost server

https://mattermost.org/

Java project management tool

https://maven.apache.org/

Allows Maven's artifact handling to be used from within an Ant build

http://maven.apache.org/ant-tasks/index.html

Wrapper script for the various installations of Maven

Java project management tool, 3.x branch

http://maven.apache.org/

Java project management tool, 3.3.x branch

http://maven.apache.org/

Java project management tool

https://maven.apache.org/

Implementation of new/posix awk

http://invisible-island.net/mawk

Converts mbox mailboxes to Maildir

http://batleth.sapienti-sat.org/projects/mb2md/

SSL/TLS and cryptography library

https://www.trustedfirmware.org/projects/mbed-tls/

SSL/TLS and cryptography library

https://www.trustedfirmware.org/projects/mbed-tls/

Tool for buffering data streams

https://www.maier-komor.de/mbuffer.html

Midnight Commander, a free Norton Commander Clone

http://www.midnight-commander.org/

Collects and decodes Machine Check Exception data

http://mcelog.org/

MCP server allowing LLMs control browser with Browserbase, Stagehand

https://github.com/browserbase/mcp-server-browserbase

Replacement for crypt(1)

http://mcrypt.sourceforge.net/

Utilities and libraries to export data from MS Access databases (.mdb)

http://mdbtools.sourceforge.net/

Multi-dimensional data index algorithm

https://gitlab.com/mdds/mdds

Alcohol 120% to ISO converter

http://mdf2iso.berlios.de/

Advertise a service via Rendezvous

https://github.com/Pro/mdnsd/

mdoc macro compiler

https://mdocml.bsd.lv/

Open Source implementation of the Lotus Sametime protocol

http://meanwhile.sourceforge.net/

Yet Another Part-of-Speech and Morphological Analyzer

https://code.google.com/p/mecab/

MeCab IPA dictionary meta-port

https://taku910.github.io/mecab/

Japanese Morphological Dictionary for MeCab (EUC-JP)

https://taku910.github.io/mecab/

Japanese Morphological Dictionary for MeCab (Shift JIS)

https://taku910.github.io/mecab/