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
I2P is primarily focused on providing anonymity and privacy through a decentralized network, making it suitable for secure communications and hidden services. In contrast, Project Maelstrom leverages the BitTorrent protocol for efficient content distribution and decentralized web hosting, catering more to users seeking fast file sharing rather than anonymity.