niteru
Niteru allows you to search for Japanese kanji by inputting a kanji that looks visually similar to the one you're looking for. It's heavily inspired by Lars Yencken's SimSearch and uses the same stroke-edit distance calculation as that project. It also uses kanji readings and English meanings from KANJIDIC.
Niteru's backend is in Scala via the Play framework and its frontend is Typescript with React/Redux.