JEDict is my new favorite mac-based dictionary reader.
Again it uses data from the EDICT project like WordLookup, but it’s searches are much more powerful and speedy. It doesn’t only search on the first character. It has single kanji searches so you can find the meaning of individual components. It has a built in user dictionary so you can collect word lists. You can search for kanji you don’t know the reading of by using a radical index. It has a built in web browser that allows you to click on a word and get a translation!!! I liked it so much I upgraded my OS version to 10.4 in order to use it.
On the down side it isn’t as well designed as Word Lookup and I find it a bit cluttered and hard to read sometimes. However I think this will improve. The changes between 4.0 and 4.0.1 addressed a lot of things I found difficult.
It is shareware at a very reasonable $25. The unregistered version is completly usable but doesn’t allow you extra dictionaries.
Version 4 needs OSX 10.4 but version 3.8 will run on OS8 and above. (version 3 isn’t as full featured however)