Kittens is an application container that can embed X applications and steal them from your window manager in order to provide advanced window management options to any window manager. It can tab windows together, split to show them vertically side by side, and allow applications and splits to be resized with the mouse or keyboard. It works in environments such as GNOME, KDE, and XFCE. Kittens is also ideal for managing applications without having to use a mouse.
mimetic is a MIME library written in C++ designed to be easy to use and integrate but yet fast and efficient. It's standard compliant using the Standard Template Library for base C++ structures and supporting all relevant messaging RFCs. A powerful template encoding/decoding engine is also included to allow seamless extendibility (i.e. encryption codecs) and intuitive codec chains creation (using well-known Unix-style pipes syntax: a|b|c). Real world examples, documentation, and regression tests are included.
miniDB is a small and fast isam/btree library/program for record based access, used as standalone or as client/server. It features a small footprint, multi-field indexes, autoincrement fields, and database logging. All data is kept in a pure ASCII file, so you can also use grep and awk on it.
modu is a high-level toolkit for building database-driven Web applications in Python. It provides all the common components needed to build custom Web applications in Python, including form generation, object-relational database mapping support, pluggable template systems, database-resident session and user support, and more.
mrtoms is an IRC bot written in Scala. It supports a very powerful and easy to use plugin system where plugins are compiled to and loaded from jar files. mrtoms comes with a Z-machine interpreter plugin so that games like Zork can be played collaboratively. It also includes an MPD control plugin and others.
musl is a new implementation of the standard library for Linux-based systems. It is lightweight, fast, simple, free, and strives to be correct in the sense of standards-conformance and safety. It includes a wrapper for building programs against musl in place of the system standard library (e.g. glibc), making it possible to immediately evaluate the library and build compact statically linked binaries with it.