MCLIDE - Lisp IDE for Macintosh
mclide.in-progress.com
mclide.in-progress.com
I'm downloading MCLIDE now, but it would be good to hear some reviews before I take the time to set it up. For me the issue is that Emacs + either SLIME or the Scheme minor mode is very good for development.
Also, as someone kindly pointed out in an email: http://www.clairvaux.org/ColorCoded.html
I've been noticing this lately to understand why it took me so long to notice mzscheme. I kinda was aware of it, but I didn't really focus on it until arc came out. It's a weird blindspot..