Grokster

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Grokster Ltd. was a privately owned software company based in Nevis, West Indies that created the Grokster peer-to-peer file-sharing client in 2001 that used the FastTrack protocol. Grokster Ltd. was rendered extinct in late 2005 by the United States Supreme Court's decision in MGM Studios, Inc. v. Grokster, Ltd. The court ruled against Grokster's peer-to-peer file sharing program for computers running the Microsoft Windows operating system, effectively forcing the company to cease operations.

The product was similar in look and feel to Kazaa, marketed by Sharman Networks, and Morpheus, which was distributed by StreamCast. Grokster, along with Morpheus and Kazaa, are considered second-generation peer-to-peer file sharing programs. Unlike their predecessor Napster, these file sharing programs allowed users to trade files directly between one another, without these transactions passing through a centralized server. Because Napster maintained this fraction of control over the transaction of files through its server, it was ruled illegal because it should have exercised its power over the server to stop the sharing of copyright infringing files. Grokster and this second generation of peer-to-peer file sharing programs sought to avoid this legal obstacle.^[1]