Sona is a program for serious language learners. It helps you learn the vocabulary you need with recordings of model pronunciation, examples of usage in context, notes on usage, links to images, movies, and the internet, and nine different activities.
InstantTranslate makes it really easy to translate a selection of text in the application you are working in from one language to another language.
One World Dictionary by Ascendo is a leading multilingual reference tool for Apple desktops.
