Kanji Koohii - Remember the kanji; mnemonics, smart dictionary, flashcards, spaced repetition.

Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Japanese Thai Dictionary - Japanese Thai Dictionary provides a comprehensive collection of over 40,000 carefully selected words, plus a highly efficient Translator to assist learners in their journey.

Kanji Book - Learn Japanese online with kanji mnemonics. Study all of the jōyō kanji with the best spaced repetition system. It's easier and better than any flashcard app.

Tegaki - Open-source Chinese and Japanese handwriting recognition.

Repetitions - Repetitions is a cross-platform spaced repetition system (SRS), an intelligent flashcard application that makes learning and memorization easy.