Universal Translator Pro is a convenient translator for your Mac. With this tool, you can write or dictate sentences, so you can then get a quick translation into 40 languages thanks to a sophisticated and powerful translation and voice recognition system. The application comes with a handy built-in voice synthesizer.
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.
