Bilingual News is an application that lets you study Japanese with podcast transcripts. You are able to use transcripts while listening along with the podcast audio to improve your language skills and look up unknown words. Also, you can create vocabulary lists and take notes.
One World Dictionary by Ascendo is a leading multilingual reference tool for Apple desktops.
InstantTranslate makes it really easy to translate a selection of text in the application you are working in from one language to another language.
