MP3Gain - A free automatic mp3 volume normalizer.
QMP3Gain - Graphical user interface front end supporting MP3Gain engine which analyzes and losslessly adjusts...
easyMP3Gain - Graphical User Interface (GUI) for MP3Gain, VorbisGain and AACGain (enables you to modify the...
wxMP3gain - Needs to be compiled.
Sound Normalizer - Sound sound normalizer, designed to enhance or restore the volume of musical WAV and MP3 files.
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.