iijo.org is a little site I built to easily create and review Chinese flashcards. The 2 stand out features of this site are the fact it uses spaced repetition and the ability to create flashcards from a dictionary of words. I'm not sure if these are still rare features but when I started on this project in 2008 they were.
People sometimes tell me its not using spaced repititon because the UI is not what they are used to from Anki, but it if you check the source code you will see that it is. I feel this UI is simpler and easier to use.
I would love to receive code contributions.
iijo.org/dictionary is almost a separate website. Its a searchable Chinese/English dictionary. The goal is to provide a dictionary that allows you to quickly add a new flashcard to your list of cards to learn.
I'm releasing this code under the same license as Perl.