I've uploaded a first working version of my Scheme IDE based on Eclipse. Its called

Schemeide http://schemeide.sourceforge.net/

Right now it mostly does auto-formatting and debugging. It works with Gambit 4.2.9 on MacOS, Win32, and Linux. It is still alpha quality, with many features still to do. But it seems to be usable, at least for easy stack inspection of problems. Function breakpoints still need to be entered manually. And the interaction between the output window and debug mode is not good. I'll be working on it since I'm using it daily in my Scheme work. If anyone wants to help, please let me know. Feedback is welcome.

William Cook http://www.cs.utexas.edu/users/wcook