kana-dojo

Aesthetic, minimalist platform for learning Japanese inspired by Duolingo and Monkeytype, built with Next.js and sponsored by Vercel. Beginner-friendly with plenty of good first issues - all contributions are welcome!. Maintained by lingdojo on GitHub, where it has earned 2,942 stars from the community.

It's actively developed around beginner, beginner-friendly, contribute, and is a solid reference for anyone building with these tools.