MiniPauker is a flash card based learning application for mobile devices and handhelds. It is based on the leitner cardfile system and is compatible with Pauker (http://pauker.sf.net, the desktop version of this software). MiniPauker uses a combination of ultra-shortterm, shortterm, and longterm memory. You can use it to learn all the things you never want to forget any more, like vocabulary, capitals, and important dates.
Samurai Kanji a flash-card application for memorizing kanji. It is inspired by "Remembering the Kanji I" by James Heisig. It can run on any PDA or mobile device running PalmOS, SymbianOS, or Windows CE. What primarily makes this different from other, similar applications is that the kanji are divided into the same lessons that Heisig uses in his book. The user can then choose which lessons to drill on as the user progresses through the book.