amaojapan.net/learn-japanese/
Resource hub organizing JLPT study materials by level from N5 to N1, with separate lists for grammar, vocabulary, and kanji across all proficiency levels.
JLPT and other testsGrammarVocabularyIn JapaneseJLPTJLPT N5JLPT N4JLPT N3JLPT N2JLPT N1