C'est la vie
Hasami uses Wanakana, JQuery, RequireJS, and Bootstrap, as well as the Bootstrap Flat theme.
Similar projects of interest:
Japanese word database, which allows you to see different words for the same reading and choose accordingly. Also includes definitions and other information about the word. Supports kanji. Works for both verbs and adjectives. Accepts both hiragana and romaji. On top of that, open-source.
Only works for verbs. Automated. Accepts both hiragana and romaji.
Verb conjugator. Works on Ubuntu, Mint, and Windows. Also open-source.