Translate words and should support any language. it comes with a plugin system to ease the addition of new dictionaries.
the main idea behind ktranslator is to translate a word without disturbing the application in use. so, when the user click with the mouse's right button on a word while pressing ctrl key, ktranslator will try to translate the word and show the result in a popup window. it behaves like babylon for windows.
screenshot: http://www.eriberto.pro.br/debian/screenshots/ktranslator.jpg