Netsukuku the Anarchical Parallel Internet

"Developed by the Freaknet, Netsukuku is a new p2p routing system, which will be utilised to build a worldwide distributed, anonymous and anarchical network, separated from the Internet, without the support of any servers, ISPs or authority controls. In a p2p network every node acts as a router, therefore in order to solve the problem of computing and storing the routes for 2^128 nodes, Netsukuku makes use of a new meta-algorithm, which exploits the chaos to avoid cpu consumption and fractals to keep the map of the whole net constantly under the size of 2Kb. Netsukuku includes also the Abnormal Netsukuku Domain Name Anarchy, a non hierarchical and decentralised system of hostnames management which replaces the DNS. It runs on GNU/Linux."

http://netsukuku.freaknet.org/