github.com/ripose-jp/Memento/blob/master/README.md
Memento is a free, open-source video player designed for studying Japanese that includes grammar-aware subtitle search, Yomichan-style kanji cards, and integration with Anki for spaced repetition learning.
Apps and toolsDictionaries and lookupHistoryDictionariesExample sentencesKanaBrowser extensionsFreeSpaced repetitionManga