It is a project called Breakage that uses ChucK as a back-end and a Java application as the front-end. Are there other projects like this?
At this point I am considering doing the same with Python as a front-end and calling Chuck through OS system calls. This is less elegant than using SuperCollider since then the message passing could then be pure OSC. But I'm liking Chuck and have done a lot in a short time.
ChucK supports OSC as well, of course. I've personally been thinking of designing an app along this architecture too.. there's something about ChucK that seems to make a good "audio engine". Maybe because its programming paradigm is more similar to a familiar procedural way of thinking than dataflow visual languages are. In any case, I think this is a good time to start thinking about "libchuck"... :-) I'm sure there are uses for it.. Steve