Anki

Flashcard learning program with special support for Japanese

Anki is a program designed to help you remember facts (such as words and phrases in a foreign language) as easily, quickly and efficiently as possible. To do this, it tracks how well you remember each fact, and uses that information to optimally schedule review times.

While Anki can be used for studying anything, it also ships with special features designed to make studying Japanese and English easier: integrated dictionary lookups, missing kanji reports, and more.

Besides text, it supports sounds, images and rendering TeX snippets in the cards. Sample card decks are included for a subset of the Japanese Language Proficiency Test vocabulary and for some Russian vocabulary.