P2P2007 is the seventh in a series of annual conferences concerned with overlay network technologies. Overlay networks combine and share the resources owned by devices that are distributed at the edge of the Internet, which are normally relegated to the role of clients. The key issues to be considered are scalability, robustness, and security which must be solved before (legal) peer-to-peer services will become mainstream. Consistent with the previous occurrences of this conference, P2P2007 promotes the collaboration in research among academic institutions, government organizations, and enterprises that are concerned with the research and implementation of peer-to-peer networks and large scale distributed systems.

P2P2007 includes three keynote speeches, two tutorials, 26 regular papers (acceptance rate 19%), 6 short papers, and 5 demonstration papers. The conference preliminary program is provided below (also available at http://www.p2p2007.org).