An emulator for all kinds of cool oldschool games.
See also Zaurus SL-C1000 hardware
I'm just dumping it all here in case it ever becomes useful to someone out there. Most of the links are dead, but many can be found on the Internet Archive.
Vincent Fiack made a script to build the CVS version of Ruby for the Zaurus. You will need to have the cross compiler installed and a x86 version of ruby to run it.
See Programming for the Zaurus for cross-compiling help.
A media player using a MPlayer backend.