The debugger has a client/server architecture that would make it relatively easy to connect to most languages (server does the rendering and layout stuff, client provides 'monitored' data structures, and sends data structure operations to the server). The clients are pretty easy to write.

Your experimental lisp editor sounds neat. I'm unfamiliar with slurping/barfing, haha.

I might've been interested in some shared exploring in the past, but I really am giving this stuff up for the time being. If you want to share a demo or discuss some particular idea sometime, or something, I can be reached here, though: westoncb[at google's mail service]