CDDBD.sh is a shellscript speaking the CDDB Protocol version 1 without enhancements and read only. CDDBD.sh allows to query a local database on a filesystem that was filled with entries using such programs like xmcd or kscd. CDDBD.sh was developed to be used in a local or home network and not to serve a WAN.
crip is a terminal-based ripper/encoder/tagger tool for creating Ogg Vorbis files (or MP3 files for crip 1.X) under Unix/Linux. It is well-suited for someone seeking to make a lot of Ogg/MP3 files from CDs and have them all properly labeled and professional-quality with a minimum of hassle.
Mp3tag is an Objective-Caml library for reading and writing ID3v1 and v2 tags in MP3 files. It includes mp3tag tools, which can be used to modify tags in MP3 files or rename files according to their tags, and a cddbtag tool that modifies tags by using a CDDB server to retrieve information about the track.
ripx is a script designed to make ripping CDs as easy as possible. It features CDDB lookup, ID3 tag editing prior to ripping, playlist file generation, album directory creation, and generally a nicer interface than many similar tools. By default, ripx uses cdparanoia to extract audio from CDs and lame to encode the audio to MP3 format at the quality of your choice. If you wish to use alternative applications for extraction or encoding, modifying ripx to handle these should be fairly painless.