Comment by msutherl

Max/MSP, Pure Data, vvvv, QuartzComposer, SuperCollider, ChucK, Processing, openFrameworks, Cinder, and Field are the big names.

But there are many more smaller projects such as Lubyk, Overtone, LuaAV, Faust, Plask, Impromptu and Fluxus.

I also want to plug NoFlo, which is a 'flow-based programming' library for node.js, which integrates with a visual editor.