Last year most of the time I used #orca from @neauoire with #sunvox and later with #puredata.
It's all very very interesting. And it looks so cool, like if you make music with these things, you have to show what it looks like on video, so it's like another level of openness, the process of creation itself is open. Although my way of doing things in puredata was horrible (read: shitcode) and I tried to make sunvox out of it, so my old lovely laptop couldn't handle it.