Best for: Sentence mining from shows and videos
Free, open-source browser player and extension for watching Japanese video with subtitles, including on streaming sites, and mining sentences from them into Anki.
YouTube channel with hundreds of free Japanese lessons, best known for a series that walks through every chapter of the Genki textbooks, explaining the grammar and building practice sentences. Relaxed and funny enough to listen to on the go. His website, tokiniandy.com, adds paid companion courses with exercises and tests for Genki and Quartet.
Podcast in natural, slow Japanese, with a beginner series and longer episodes for more advanced listeners.
Online Japanese Accent Dictionary (OJAD) from the University of Tokyo: shows the pitch accent of words and how it changes when verbs and adjectives conjugate.
