Gordon is a database management system for working with large audio collections. For the most part it is intended for research. Gordon includes a database backend, web server and python API. Gordon will automatically import music collections into the database and try to resolve tracks, albums and artists to the MusicBrainz service.
Gordon is named after the character Rob Gordon from the Nick Hornby book High Fidelity. This was also a movie with John Cusack playing Gordon (and Jack Black playing Barry, another great character).
Please, visit the official Gordon website for detailed information.