The Invisible Internet Project (I2P) is a garlic routing using overlay network and darknet that allows applications to send messages to each other pseudonymously and securely. Uses include anonymous Web surfing, chatting, blogging and file transfers. The software that implements this layer is called an I2P router and a computer running I2P is called an I2P node.
License: Open Source
OneSwarm is primarily focused on decentralized file sharing with user-friendly features, while I2P offers a more complex yet robust anonymity network suitable for a variety of applications. Users seeking straightforward P2P file sharing may prefer OneSwarm, whereas those prioritizing security and anonymity might find I2P more appealing.