lemonodor mentioned that MCL is going open source. MCL was a cutting-edge GUI Common Lisp environment for the Mac. It is second only to Lisp Machine environments at inspiring its aging users to sneer at the idiot Lispers who think command-line tools and terminal-based editors and Tk bindings are cool. "What? Emacs? Is that a joke? I was embedding QuickTime in my GUI Lisp apps in 1995!"