cdrkit is CD Recording Kit, a collection of applications related to creation of optical disk media on Unix platforms, from creation of the filesystems used on such media to the actual burning process. It is heavily based on the cdrtools package (partially developed and maintained by Joerg Schilling before), but is maintained independently.
MP3c is a curses-based audio CD-to-MP3/OGG converter with CDDB support. It can be used in an interactive menu environment or a batch mode which lets you encode automatically. MP3c tries to find the most useful information in a CDDB entry, and even recognizes sampler CDs correctly. It is very configurable and can be used with every available encoder, ripper, and tag editor. It is available in different languages (currently English, Spanish, Portuguese, Italian, Polish, and German).
Xmcd is a full-featured CD player and ripper software suite including xmcd and cda. Both utilities transform your CD drive into a stereo CD player, allowing you to play music CDs on your computer, as well as perform digital audio extraction (DAE) into files or streams of various formats. Multi-disc CD changers are also supported on many platforms. Xmcd features CDDB disc recognition, web browser integration for content related to the playing CD, local discography management, full feature-specific help system, remote control capability, and more.