Rikki is a Japanese-to-English dictionary application for Windows that allows you to lookup Japanese words and kanji by hovering your mouse over any Japanese text. It works similar to the popular Rikaichan/Rikaikun/Rikaichamp browser extensions for Chrome and Firefox, but works for any Japanese text shown by any application on the screen, including images. Dictionary lookups are performed using the Kanjitomo OCR (optical character recognition) engine.
This project is still in active development. No releases have been made.