Items starting with M
Mixxx
A Linux, Windows and OS X program that was among the first open-source products to be made available in Apple’s App Store, Mixxx provides a professional quality DJ mixing environment that can read MP3, Ogg Vorbis, WAV, AIFF and FLAC formats, among others.
Mochi
Take notes and make flashcards using markdown, then study them using spaced repetition.
MyPermissions Privacy Cleaner
MyPermissions will run in the background and alert you if a website tries to get your information or files. It can also scan social media accounts to look for third parties who have access to your data.