Cross-Platform Development Tools? (Score 1)

Well...it's a little crazy, but you could use Squeak (www.squeak.org). It's the cross-platformiest thing I've ever seen. Okay, it's Smalltalk. But it's a very complete, very good Smalltalk, and it runs essentially ideintically on practically anything you can imagine. I've personally run the same identical image on various flavors of Windows, various flavors of Linux, and various flavors of MacOS. It runs on a bunch of less mass-market machines too, including some PDAs.