KavaServices adds commands to the Services menu that let you: Translate text back and forth between several languages Calculate mathematical expressions Convert currencies and other units Encode special characters into HTML entities Execute terminal commands These commands will replace the selected text in any Mac OS X application, just like magic. You don't need to switch to a different program, or even copy and paste. For example, you can even translate part of a web page or an incoming mail message.
||Free to try
Mac OS X 10.6 Intel