KDing
KDing is a KDE frontend for Ding, a dictionary lookup program. It sits in KDE's system tray and can translate the current clipboard content. Users can also enter single words or phrases for translation. It is intended to be used for translating between German and English, but can be used with every language for which a word list is available for Ding.
This program is released under the terms of the GNU GPL version 2. See the file COPYING for details.