[mushly]

Where can I find a list of these amazing multi-media programming environments that I've never heard of before, but which look so awesome?

[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.

[mgunes]

I was unable to find anything close to a definitive list, but http://en.wikipedia.org/wiki/Visual_programming_language is a start.