MusicBrainz is not unique as a database of music information. For a comprehensive list, see wikipedia. This page lists some and indicates if crosslinking is possible.
For an exhaustive list of databases that can be linked to from entities see the whitelist.
|Wikipedia||Wiki-based free general interest encyclopedia||Free||Creative Commons||Yes|
|Discogs||Commercial site, switched to a public domain license for its data in early 2008||Free||Public Domain||artists, release groups, releases, labels|
|MusicMoz||Directory of all things music, edited by volunteers. Imports data from MusicBrainz.||Free||Link||Yes|
|Allmusic||Commercial site. Part of content is freely available.||Free||Proprietary||artists, release groups, recordings, works|
|Rate Your Music||Metadata database build around ratings and reviews. Good genre and location/date data. (RYM)||Free||Proprietary||No|
|Amazon||Often has incorrect release dates, doesn't always mark imports as such*||Free||No|
|WorldCat||International network of library holdings||Free||Link||Yes|
|Open Library||Internet Archive's project for books and audiobooks||Free||Link||Yes|
|Open CD Index||CDDB/free.db successor||Free||GPL||No|
|CDArchiv||CDDB/free.db successor (in German), supports the Hitbase application||Free||No|
|Sound Credit||Music credits platform for capturing metadata in DDEX RIN format. Provides an online database.||Free||Proprietary||No|
|VIAF||Links person name entries of national libraries. Should contain everyone that has released a work.||Free|
|Jaxsta||Aggregator of content-owner supplied music data via DDEX. Free tier allows 5 searches/month.||Paid||No|
|GD3||Commercial CD/DVD metadata lookup site||Paid||Proprietary||No|
|Gracenote||Commercial site. Inspired MusicBrainz to form, by stealing public data. (formerly CDDB)||Paid||Proprietary||No|
|SoundtrackCollector||Database of movie soundtracks||Free||No|
|VGMdb||Database of videogame music||Free||artists, labels, releases|
|Encyclopaedia Metallum||Database of heavy metal (and related) music (aka The Metal Archives)||Free||No|
|SA-CD.net||Database of Super Audio CDs||Free||No|
|45cat||Database of 7" vinyl||Free||Yes|
|LaserDisc Database||Database cataloging all LaserDiscs. Also has HD DVD, CED, VHD and D-VHS releases.||Free||No|
|Songtitle.info||Database of US television advert music|
|Encyclopédisque||Database of French 7" vinyl||Free||No|
|Soundamental||Database of French singles and albums. Has catnos and barcodes.||Free||No|
|SamplerInfos||Database of German samplers and compilations||Free||No|
|臺灣流行音樂資料庫||Database of Taiwan popular music||Free||No|
|allmusic.hu||Database of Hungarian music||Free||No|
|muzic.net.nz||Database of New Zealand music||Free||No|
|AudioCulture||Database of New Zealand music (focused on biographies and pictorials)||Free||No|
|Nederlandse Liederenbank||Database of Dutch music. Source for origin of (old) works. Crosslinking requested.||Free||No|
|The Covers Project||Database of cover songs (songs performed by an artist other than the original performer). Uses MusicBrainz data.||Free||No|
|Second Hand Songs||Database of cover songs containing artists, songs and covers (80K originals, 640K cover songs and 3166 songs with samples - 2018-10-27)||Free||artists, releases, works|
|coverinfo.de||Database that lists more than 50K cover songs and samples. Interface in German, but there is also a English user guide.||Free||No|
|WhoSampled||Database of samples, covers and interpolations||Yes|
|International Music Score Library Project||Holds the Petrucci Music Library, an internet-based collaborative music score library (IMSLP)||Free||Public Domain||Yes (as "has score")|
|MusOpen||Online music library of copyright free (public domain) music. Offers free music and sheet music downloads.||Free||Public Domain||No|
|Last.fm||Currently uses MusicBrainz data (?)||Free|
|Curlie||Open Directory, also lists other directories here||Free||No|
Free as in "Free beer, if you drink it in my bar".
|GnoD||Engine that relates artists to each other; the database doesn't appear to be publicly available||Free|
- UPC Database: Database of Barcodes including music CDs (as well as DVDs, nappies and other assorted goods).
- BPMDataBase: Database of dance music tracks with their bpm for DJs - Slowly dying in 2008 due to spam submissions and no non-spam submissions.
- Wolf's Kompaktkiste: A personal database of Wolf's CD and record collection, with scans. Largely electronic, with jazz other genres as well.
(please add any more you know of)
- Echo Cloud: Database of related artists (if you like xxx then you might like yyy) based on crawling P2P networks - Down as of 2008-03
- Cover Songs Database: Similar to above, but also tracks usage in samples - Down as of 5/24/07
- Music Recommender: Database of related CDs (if you like xxx then you might like yyy) based on crawling music playlists - Down as of 2008-03
- MoodLogic: Proprietary, fingerprint based mood and genre matching "Effective March 3, 2008, Macrovision announces the end of life (EOL) of the Moodlogic..."
- MusicMatch: Database taken offline in September, 2007, when Yahoo! aquired them. Yahoo! has since discontinued the MusicMatch software and database completely.
- Music City:"Collaborative" music and artists DB. Has content from Amazon and no copyright statement (see also thread in their forum). Beta. - Inactive as of 2005-06
- ChristianMusicPlace: Christian music site
- The Free Track Info Xchange: Works with the Microsoft Deluxe CD Player, and also has a "universal" data converter (PLC)
- Daz.com: Seems to mainly source data from freedb
- Commercial Breaks & Beats: UK television advert music database
- TrackType.org: Formerly freedb2.org
- Web Music Database:
- FreeDB: Successor to CDDB, redirects to gnudb.org since 2020
- Metamuse: Database of cover songs and remixes - Possibly offline as of 2018-10
- SonataDB: Commercial database for classical music - Seems to be offline as of 2023-01
- Music Plasma: Very pretty related artist mapping database with audio clips; very little documentation so not sure where their data comes from - Seems to be offline as of 2023-01
- Sample FAQ: Tells you "who sampled what from who", irregularly updated and with a hand-tooled vibe but very interesting - Seems to be offline as of 2023-01
- Other Databases Relationship Type/Whitelist
- List of online music databases on Wikipedia
About amazon's [Import] label not being trustworthy, here is the smoke-proof to check whether the IMPORT is bogus or not on .fr. Switch the tld to .de: http://www.amazon.de/gp/product/B00004UH7R
Check what they have as a label, in this case: Label: France (Megaphon Importservice) => it comes from france, and the [Import] is on .fr is bogus.