ShareNet

ShareNET is a free tiny PHP script based on a p2p concept. Anybody can add this script on a server to create a relay. Every relays have a server list and send the messages that they receive to these servers/relays. Before relaying, the server asks the peer that has relayed the message and the peer that has sent the message to be sure that the user and the message exists and comes from this relay. People can create a script to add users on a server and to show the messages but this script is only the relay.