Everything here is free, runs in your browser, and needs no signup. The busiest of them is the kaomoji picker, a copy and paste library of Japanese text faces, followed by the ikigai quiz for finding your reason to get up in the morning, the Japanese zodiac calculator for the animal sign of any birth year, and your name in Japanese written in accurate katakana. If you would rather follow the year than look something up, the Japanese seasonal calendar walks through the seventy-two micro-seasons one by one.
For names, the random Japanese name generator pairs real surnames and given names with their kanji, and anime fans can find their archetype with the dere type test.