zkanji - zkanji is a free and open-source study tool and dictionary of the Japanese language.

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

RomajiDesu - RomajiDesu is a free online bi-directional Japanese-English dictionary, Kanji dictionary, Sentence analyzer and Japanese to Romaji/English translator, and Romaji to Hiragana/Katakana Converters for Japanese learners.

Clozemaster - Learn a language through mass exposure to useful vocabulary in context.

Jisho - Powerful and easy-to-use online Japanese-English dictionary with words, kanji and example...

Bialect - Learn languages faster with stories.