Kingdom Hearts
A 100% completion tracker for the entire Kingdom Hearts series: trophies, treasures, commands, and collectibles across all seven games, plus a Birth by Sleep command melding calculator. Runs entirely in your browser.
Pokémon
A completionist companion for the Pokémon series: Ribbon Master tracking across generations, per-game collectible and Pokédex trackers, and Pokémon HOME challenge progress. Work in progress.