A simple organizer for the Nintendo DS. Includes scheduled events, address book entries, todo lists, scribble pad, IRC, calculator, web browser, homebrew database, text/html editor/viewer, bmp/png/jpg/gif viewer, mp3/ogg/wav/ flac/aac/m4a/ mod/xm/it/s3m/ sid/nsf/spc and streaming aac/mp3/ogg player, wav recorder, support for plugins, etc.

http://gbax.gp2x.de/gbax2007.html