1. 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.

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

  3. A strongly-timed, concurrent, and on-the-fly audio programming language

  4. Overtone is an open source audio environment designed to explore new musical ideas from synthesis...

  5. Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...

  6. SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).