The Windows XP Peer-to-Peer SDK provides documentation, sample code and other tools that allow developers to build peer-to-peer applications or services that capitalize on the new Windows XP Peer-to-Peer Update available for users.The SDK contains all software required to create decentralized applications that harness the collective power of edge of the network PCs.

Major components include: Peer-to-Peer Application Programming Interface (API) Documentation for each of the Peer-to-Peer core areas (e.g., scalable and secure peer-to-peer name resolution, efficient multi-point communication , creating and managing persistent peer-to-peer groups, and distributed data management); Peer-to-Peer headers & libraries; Sample applications and source code.