MP3Gain - A free automatic mp3 volume normalizer.
Rubyripper - Rubyripper is a digital audio extraction algorithm that uses cdparanoia error correcting power and...
QMP3Gain - Graphical user interface front end supporting MP3Gain engine which analyzes and losslessly adjusts...
winLAME - winLAME is an encoder for several audio formats, including mp3 (MPEG Layer 3), Ogg Vorbis and more.
wxMP3gain - Needs to be compiled.
Asunder - Asunder is a graphical Audio CD ripper and encoder for Linux. You can use it to save tracks from an Audio CD as any of WAV, MP3, OGG, FLAC, Opus, WavPack, Musepack, AAC, and Monkey's Audio files. Asunder is translatable!