Tab for Translate is an easy-to-use tool for quick translation. It takes care of all your language translation needs. The application lives in your Mac's menu bar and it is available instantly at the click of a button. You need an Internet connection to access Tab for Translate.
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.
