TorChat

Program: TorChat

Website: https://github.com/prof7bit/TorChat/wiki

Description:
"TorChat is a peer to peer instant messenger with a completely decentralized design, built on top of Tor's location hidden services, giving you extremely strong anonymity while being very easy to use without the need to install or configure anything.

TorChat just runs from an USB drive on any Windows PC."

License: Open Source/GPL

Other: n/a