MetaBrainz Foundation
https://metabrainz.org/Crowd sourced open data projects: MusicBrainz, ListenBrainz, AcousticBrainz, CritiqueBrainz, BookBrainz, Cover Art Archive, …
The MetaBrainz Foundation provides the backbone for a number of projects rooted in crowd sourcing open data, namely:
- MusicBrainz: open music metadata database
- MusicBrainz Picard: music file tagger, using data from MusicBrainz
- ListenBrainz: repository of listen data
- AcousticBrainz: crowd sourced database of acoustic information for music
- CritiqueBrainz: Creative Commons-licensed reviews
- BookBrainz: open "book" database
- Cover Art Archive: repository of album cover art
Primary Open Source License: GNU General Public License version 2.0 (GPL-2.0)
