MySQL - The world's most popular open source database
keezy - A colorful soundboard. Play with music.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Aftertouch - Aftertouch – 3D MIDI Controller created and published by Kevin Nelson.
SQLite - SQLite Home Page
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.