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These lists are surely incomplete. Please suggest salient additions.

Directly Related Projects

Chord: Scalable Peer-to-Peer Lookup

Open DHT: A Publicly Accessible DHT Service

Kademlia: XOR metric-based routing

Coral: The NYU Distribution Network

Ocean Store: Providing Global-Scale Persistent Data

Pastry: An infrastructure for peer-to-peer applications

The paper for CAN: Content Addressable Networks.
Home Page for PIER: P2P Information Exchange & Retrieval

Related Conferences

International Workshop on Agents and Peer-to-Peer Computing (AP2PC 2002)
1st International Peer-to-Peer Systems Workshop
Collaborative Computing in Higher Education: Peer-to-Peer and Beyond
2nd International Workshop on Peer-to-Peer Systems (IPTPS '03) 20-21 February 2003 - Berkeley, CA, USA.

Related Projects

There has been a veritable explosion of peer-to-peer projects. A complete and current listing is essentially impossible. This list is a best-effort attempt at high-profile projects and some pointers to some decent meta-sites that contain links to lesser known projects.

Some meta-sites listing many projects

A good academically-oriented meta-site is the IEEE distributed systems site.
A good commercially/politically-oriented site is O'Reilly's Open Peer-to-Peer News/Article Site. In particular check out their extensive project directory.
Another meta-site is The Peertal.

Some specific Peer-to-Peer projects

Witold Litwin's Home Page details Scalable Distributed Data Structures (SDDSs) and derivatives of LH*.
The Gnutella File Sharing Network
The Freenet project.
The Free Haven project.
The KaZaA File Sharing Network
The AudioGalaxy Music Sharing Network
The Circle: Independent Python Chord Implementation w/Applications
A Microsoft entry is Farsite.
The Publius publishing system.
The Tangler censorship resistant publishing system.
The Anthill protocol framework.
The CoopNet content lookup system.
The PlanetP middleware storage system.
The WinMX project.
JXTA

Other Related Projects

The Planet Lab project.

RON: Resilient Overlay Networks

SUNDR: The Secure Untrusted Data Repository

Miscellaneous Links

Intel's Philanthropic Peer-to-Peer Program
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