Hi Rhizome,
We have been working on a pretty cool site named sketchPatch, that allows people to collaboratively create generative art using the Processing language - but in a very immediate way and without requiring any downloads: users can browse/copy/edit/share sketches with unprecedented immediacy - all within their browser without downloading a thing. Some of the works in the gallery are very nice!
sketchPatch is featured in the Open Source Embridery exhibition in umea and will soon be moving to San Fransisco to show in the museum of craft and folk art, san francisco.
The site it's here:
http://www.sketchpatch.net
we'd be honored if you paid us a visit!
The sketchPatch hardcore team