TorChat

TorChat is a peer‑to‑peer anonymous instant messenger that operates over Tor hidden services. It was first released in November 2007 by Bernd Kreuss (known online as prof7bit) and was later hosted and developed on GitHub by the prof7bit/TorChat project, with ongoing forks and community activity around its protocol and implementations. The project’s GitHub repository is at prof7bit/TorChat. (en.wikipedia.org)