GRAVEMAN is a GUI frontend for CD-R tools (cdrecord, readcd, and mkisofs), cdrdao, DVD+RW tools (growisofs and dvd+rw-format), and sox. It allows you to burn audio CDs (from WAV, Ogg, MP3, or FLAC files) and data CDs or DVDs, and allows you to duplicate CDs. You can also import M3U and PTS playlists.
GrypPhon focuses on adding new features to the old concept of a CD player, while maintaining extreme configurability. It is written purely in Python and contains a Linux CD-ROM audio library for Python containing all normal CD-playing features, plus volume control and skipping/searching.