The «tracker» server keeps track of where file copies reside on peer machines, which ones are available at time of the client request, and helps coordinate efficient transmission and reassembly of the copied file. Demonstration in support of «fildelning» (file sharing, including of warez), in Sweden in 2006. Warez is a common computing and broader cultural term referring to pirated software (i.e. illegally copied, often after deactivation of anti-piracy measures) that is distributed via the Internet. BitTorious is an open source, commercially supported tracker with integrated web-based management portal.