tofugu.com/japanese/best-kanji-learning-programs/
Comparison and review of kanji learning programs and tools including WaniKani, Remembering the Kanji, and Kanji Learner's Course, with guidance on choosing a program based on what aspects of kanji you want to learn.
Kanji and kanaApps and toolsResource lists and enginesKanji mnemonicsSpaced repetitionHandwritingTextbooksJoyo kanjiGraded readers