These are some useful links related to Japanese software, lessons and culture.
mioSuite on SourceForge.net - Everything related to this project!
EDICT Project - by J.W.Breen. This is the home page of the most famous japanese/english dictionary project, and much more!
Tim Matheson's home page - Some interesting things about Japan. But if you want to check the best Japanese on-line lessons ever made, go straight to the language section!
KanjiNirvana - by Norbert Siepenk�ter. A very useful kanji learning program for the Zaurus.
Unicode font - Unicode font for the Zaurus (bigger than unismall). Also from the KanjiNirvana page.