MyEntry is a free app which lets you create and manage your own dictionary entries. For each entry key, you may have multiple associated values. This functionality can be used in a variety of ways, including keeping track of vocabularies to remember in your own set of descriptions, managing shopping or to-do lists in a simple and organized way, etc.
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.
