keezy - A colorful soundboard. Play with music.

Sonic Pi - Sonic Pi is a new kind of instrument for a new generation of musicians. It is simple to learn, powerful enough for live performances and free to download.

Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.

SuperCollider - A real time audio synthesis engine, and an object-oriented programming language specialised for...

Splice - Music creation, collaboration, and sharing made simple.

ChucK - A strongly-timed music programming language