What are some alternatives?
SuperCollider - A real time audio synthesis engine, and an object-oriented programming language specialised for...
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.
Pure Data - Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...
ChucK - A strongly-timed, concurrent, and on-the-fly audio programming language
TouchDesigner - TouchDesigner is a visual development platform that equips you with the tools you need to create stunning realtime projects and rich user experiences.
Klangmeister - Klangmeister is an open-source, live coding environment for composing music in your browser.