The TV DB is an open source tool for HTPC software and plugins developers to incorporate TV series and season banners into their customized HTPC frontend.

The online database is currently being used by several well-known plugins, including the myTV add-in for Windows Media Center as well as the MP-TVSeries plugin for MediaPortal.

The database schema open source website are available at Sourceforge.

Source: http://thetvdb.com/index.php