JLookUp 

JLookUp is a JapaneseEnglish dictionary program for Windows 98, ME, NT, 2000, and XP.

Main features:

- Built-in kana IME

This means that it will convert what you type--as you type--to hiragana or katakana.

- ROMAji to kana conversion

This means that you can type using normal characters and it will convert them to Japanse for you when you search.

- kana-insensitive search

Sort of like a case-sensitive search (but for kana).

- Search in the front/middle/back

The normal ways of searching for text.

- Wildcard support

Japanese searches support '_' (any number of characters, usually '*') and '?' (any one character) wildcards.

- Match substrings of the text

Find all words possible from the text.

- Kanji radical lookup

Look up unknown kanji by selecting its radicals.

- Multiple dictionary support

Add your own EDICT-format dictionaries.

- English searching.

Now very similar to a Google search (compared to before *wink*)

- Tons of encoding support.