This is a list of tools and resources you may find useful for learning Japanese.
Imabi (Grammar)
Tae Kim (Grammar)
Sakubi (Grammar)
Boirodasuki (Grammar)
Yokubi (Grammar)
TheMoeWay (Roadmap)
AJATT (Roadmap)
Donkuri (Roadmap)
AnimeCards (Roadmap)
Ponder (Kana Trainer)
Gohoneko (Kana Trainer)
Tofugu Kana Quiz (Kana Trainer)
Vedxyz Kana (Kana Trainer)
WaniKani (Kanji Trainer) (Free for first few levels)
StudyKanji (Kanji Trainer)
KanjiDamage (Kanji Trainer)
KanjiGarden (Kanji Trainer)
MochiKanji (Kanji Trainer)
JPDB (Dictionary)
Jisho (Dictionary)
JapanDict (Dictionary)
Gohoneko (Other Resources)
DJT (Other Resources)
DJT Better Site (Other Resources)
Tofugu (Other Resources)
Animelon (Streaming)
Crunchyroll (Streaming)
Netflix (Streaming)
Anki (Flashcard Software)
Yomitan (Popup Dictionary)
Migaku (Many utilities) {Paid}
rtk-search (Kanji Search)
Kotu (Minimal Pairs Test)
LangPractice (Learning Japanese Numbers)
LangPractice (Learning Japanese Colors)