unMessage is a peer-to-peer instant messaging application designed to enhance
privacy and anonymity.

Features:
* Transport makes use of Twisted, Tor Onion Services and txtorcon
* Encryption is performed using the Double Ratchet Algorithm implemented in
  pyaxo (using PyNaCl)
* Authentication makes use of the Socialist Millionaire Protocol implemented
  in Cryptully
* Transport metadata is minimized by Tor and application metadata by the
  unMessage protocol
* User interfaces are created with Tkinter (graphical) and curses
  (command-line)

WWW: https://github.com/AnemoneLabs/unmessage