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Mnemosyne resembles a traditional flash-card program but with an important twist: it uses a sophisticated algorithm to schedule the best time for a card to come up for review.
The Mnemosyne plugin for TeXmacs allows you to edit databases from the Mnemosyne flash-card program in TeXmacs, allowing you to include or edit mathematics in a fairly easy and efficient way.
PyKanjiCard is a flash card program to aid learning japanese written words, in
hiragana, katakana and kanji. You can select words composed only by characters
you already known. It is written in Python, using Pygtk.