[rktjmp]

There's also http://overtone.github.io/, which sits over super collider. Overtone provides an emacs mode, but you can also use it in http://www.lighttable.com/ which is a bit more accessible.

[ics]

It's funny, here I was futzing around to make emacs part of my PD workflow... Thanks for the link, I hadn't heard of it before.