AllPeers - A Firefox extension that works on a P2P principle to distribute files amongst co-workers, family, and friends.
Ares P2P - Peer-to-peer file sharing with built in audio and video players, chat rooms and more.
BitTorrent - The software that started the torrent craze and sets the standard.
Collanos - A P2P system for collaborative teams to work on projects and transmit their work amongst their work group.
Freenet Project - A decentralized peer-to-peer project with the hopes of keeping freedom of speech alive on the Internet with no fear of censorship.
GNUnet - A secure peer-to-peer system for file sharing.
WiredReach - A peer-to-peer system for businesses to help with the movement of confidential files from one co-worker's desktop to another.
Babelgum - Numerous themed channels such as music, trends, and anime.
CoolStreaming - International news, games, MTV shows and more.
Cybersky CTV - Sharing streaming television from all over the world, no matter what its original means of delivery.
Jaman - Brings independent and world movies to your computer. Sign up and get three free movies to try them out.
Joost - From Comedy Central shows to Godzilla movies, offers a wider variety of choices. Created by Niklas ZennstrÃ¶m and Janus Friis, the founders of Skype and Kazaa.
LiveStation - As the name implies, LiveStation focuses on bringing you TV as it happens.
MediaBlog - Allowing anyone to run a video or audio channel from their home computer utilizing P2P infrastructure.
Miro - Offers HD choices, download YouTube videos; an open source solution you can help with.
Open Media Network - Focusing on educational audio and video programming.
Reel-Joe - An upcoming video-on-demand service.
Reeltime - An online movie and TV video subscription service that delivers content via peer-to-peer.
Tribler - Part P2P network, part social networking: the program will exchange selected personal info with others you connect to.
Vuze - Formerly just the bittorrent client named Azureus, they now also sell and distribute legal content.
Zattoo - Broadcasting TV around the world with a focus on Europe.
FreeCast - Lets you broadcast an audio stream with as low as a DSL connection.
Octoshape - Allows anyone to get started in peer to peer multicasting.
PeerCast - Enjoy existing audio and video streams or start your own.
RawFlow - For everyone from an individual to corporations, RawFlow can help you get started with your peer-to-peer stream.
TVU Networks - Broadcasting TV from around the world and providing everyone the same opportunity.
Avaya - A former big-wig in the PBX phone industry, with the advent of P2P phone technology, they decided to embrace the technology.
BlueNote Networks - Enables a company to build their own Skype-like system to connect tele-workers, remote offices, suppliers and more.
CSpace - Text chat, file transfer, remote desktop, all based on peer-to-peer technology.
Global Village - A product of Zoom Technologies which was a well-known modem maker in the dial-up age.
Iwatsu - A corporate phone provider that handles many different protocols including SIP.
Popular Telephony - An Internet telephony solution for businesses based on P2P technology.
SIPphone - Uses the Session Initiation Protocol to make free SIP-to-SIP calls. (via)