Yomichan

Yomichan turns your browser into a tool for building Japanese language literacy by helping you to decipher texts which would be otherwise too difficult tackle.

Free Open Source Mac OS X Windows Linux Chrome OS Web Chrome Firefox

rikaikun

A port of rikaichan for chrome. Translate Japanese by hovering over words.

Free Windows Chrome

Popup Japanese Dictionary

Japanese-English popup dictionary that lets you look up Japanese word definitions without leaving your current screen! Look up Japanese words simply by copying to the...

Commercial Windows Android Android Tablet