I'm currently trying to port TXModular to linux.

It's a modular software synth written in SuperCollider by Paul Miller.

Alas, it was not written with cross-platformness in mind.

Good news is that I already got most of the GUI working on linux.
Bad news is that I probably won't have the time to finish the port before traveling to South America so, to all charitable souls around, feel free to fork my github project and give a help.

I was kindly invited by Rubén Patiño to do a Supercollider livecoding performance @NK Berlin on the 20100618.
Here is the recorded performance:

I just wrote this cool-on-the-eyes color theme for scel (SuperCollider + emacs).

Download and howto on github.

Edit:

This color-theme is now included in amazing PureDyne linux distribution!