I2P is an anonymizing network, offering a simple layer that identity-sensitive applications can use to securely communicate. All data is wrapped with several layers of encryption, and the network is both distributed and dynamic, with no trusted parties.
Many applications are available that interface with I2P, including mail, peer-peer, IRC chat, and others.
I2P is still a work in progress. It should not be relied upon for “guaranteed” anonymity at this time, due to the relatively small size of the network and the lack of extensive academic review. It is not immune to to attacks from those with unlimited resources, and may never be, due to the inherent limitations of low-latency mix networks.
Requires Sun Java 1.5 or higher, or equivalent JRE. (Sun Java 1.6 recommended).
Download: I2P 0.7.6