gWaei is an easy to use and yet powerful dictionary program for Japanese to English translation. It organizes results by relevance, supports regex searches, tabs, spell checking, kanji handwriting recognition and an console interface.
Easy install of the dictionaries you want.
Clicking Kanji in a main search to look it up.
A Screenshot on Windows 7
Use Kanjipad to draw kanji that you don't know.
You can also use the Radical Search Tool to research Kanji.
The waei help flags.