Demonoid is a private torrent downloading website allowing users to download and share a wide range of media files, including music, videos, books, games, and more. The site is controversial and the target of multiple legal investigations for allowing the piracy of media. Membership, which is required to download any files from the site, is very exclusive and closed all but a few days out of each month.

Demonoid.com was launched in April 2003 by an anonymous Serbian founder working under the name "Deimos". On November 9, 2007, the site was taken down due to legal problems with the Canadian Recording Industry Association. The site returned on April 11, 2008 after a change of administrators.

As of 2007, Demonoid.com had an estimated 3,138,042 peers sharing files on its network, making it one of the most popular bittorrent trackers in the world. http://torrentfreak.com/5-most-popular-bittorrent-trackers-070924/ Along with similar website, The Pirate Bay, it remains one of the few larger peer-to-peer sites to, so far, escape legal prosecution and remain operational.

• The Pirate Bay

• SuperNova.org

• Mininova.org