A toolset for learning Japanese with focus on listening comprehension. Most resources suggest a "writing systems first" approach, which seemed counterintuitive to me. So I started coding my own tools 10 years ago. First, a small spaced repetition system for vocabulary connected to forvo (pronunciation database) and lateron an addon for Anki (popular spaced repetition system). The addon is made for studying with movies and includes a dictionary and a parser for converting the original script to something simpler.

In retrospect, it was totally worth it: I reached a decent amount of fluency in listening comprehension and used the tools to create a Japanese course for others, which became popular on ankiweb: https://ankiweb.net/shared/info/911122782