Mandarin Tutor is a computer-based flash card system that can be used to help you learn Chinese characters. It allows you to practice a lesson sequentially, randomly, or by character/pinyin/English. As you learn characters, you can mark them off, continuing until you have learned all the characters in a lesson.
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.
