The MusicBrainz database contains a huge amount of music metadata, which is maintained by the MusicBrainz community. Find information about artists, albums, tracks and labels. Mash the data with your web app, media player, CD ripper, tagger or other applications requiring music metadata. The service's architecture follows the REST design principles. Interaction with the web service is done using HTTP and all content is served in a simple but flexible XML format.
Our API directory now includes 111 semantic APIs. The newest is the RACAI Linguistic API. The most popular, in terms of mashups, is the MusicBrainz API. We list 29 MusicBrainz mashups. Below you'll find some more stats from the directory, including the entire list of semantic APIs.
The semantic text mining Alchemy API is now a member of the API Billionaires Club. The service, which makes sense of raw unstructured data, averages 65-75 million requests per day, according to Alchemy's Elliot Turner. That brings the monthly count above 2 billion API requests.