MusicBrainz is a community-driven, open-source encyclopedia dedicated to cataloging music information globally. Founded in 2000 by Robert Kaye, it arose as a response to the commercialization of the CDDB project, aiming to fill the void left by proprietary music databases. MusicBrainz invites users to contribute data, collecting a vast range of music types—both popular and lesser-known—spanning various genres and regions. The MusicBrainz Database is the world's largest open music metadata catalog, providing a wealth of information on artists, releases, and composers, while ensuring that the data is available under flexible licensing options, including Creative Commons licenses.

For users looking to organize their digital music collections, MusicBrainz offers free tools such as MusicBrainz Picard for tagging files. The platform also provides resources for developers and commercial entities seeking to utilize music data. Operated by the MetaBrainz Foundation, MusicBrainz remains committed to preserving an accurate and accessible catalog of all music, encouraging donations to support its ongoing mission.