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 offers a decentralized network for anonymous browsing and communication with strong encryption and hidden services, making it ideal for users seeking robust anonymity. In contrast, SecurityKISS Tunnel is a more user-friendly VPN solution focused on bypassing geo-restrictions and providing privacy, but it lacks the same level of anonymity and decentralization.