gWaei is an easy to use and powerful dictionary program for Japanese to English translation. It organizes results by relevance and supports regex searches, tabs, spell checking, kanji handwriting recognition, and a console interface.
Span-gles is a Spanish to English translation GUI.
It will translate a phrase (via the Internet) or a single word (using the built-in dictionary). It has the ability to learn new words, and is smart enough to find plural and feminine words.