MusicBrainz Server
The MusicBrainz Server is an open source software application that is written in Perl with web pages constructed using Catalyst and Template Toolkit. The MusicBrainz Server provides the primary interface to the MusicBrainz Database by providing a website for users to browse and edit the data on, and a web service to power client applications like MusicBrainz Picard. The server can be accessed at http://musicbrainz.org/ or alternatively you may setup and run your own server.
If you are looking for help in understanding how MusicBrainz works the beginners’ guide and FAQs will provide a more thorough overview.
Source Code
Source code for the MusicBrainz Server can be found in the metabrainz/musicbrainz-server repository on GitHub.