p2p

Server-less Virtual Private Network (Open-source alternative to Hamachi, Radmin, etc.)

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Yacy Search Server

A P2P Distributed storage network based on the Pithos architecture, specifically designed to be responsive, reliable, secure, fair and scalable for large virtual worlds.

I2P: End-to-End encrypted and anonymous Internet

The InterUniversal File System is a distributed, peer-to-peer file system that is based on a distributed hash table, that is designed to provide fast and reliable content delivery for files.