MP3Gain - A free automatic mp3 volume normalizer.
fre:ac - fre:ac is a audio converter and CD extractor designed for Microsoft Windows, Mac OS and Linux, distributed under the GNU General Public License.
QMP3Gain - Graphical user interface front end supporting MP3Gain engine which analyzes and losslessly adjusts...
Audiozilla Audio Converter - Audio converter software that works via right-click.
wxMP3gain - Needs to be compiled.
DVDVideoSoft Video to DVD Converter - Free Video to DVD Converter: converts video to DVD format and burns it to a DVD disk