Mumble is an open-source, low-latency, high quality voice chat
A Discord Bot to protect your server from spam, invitations
You can message and share files inside your intranet without a server.
A SSH based chatroom.
A modern, AI-Smart, WASTE p2p for ipv4 and invisible address spaces
MSN compatible messenger application
[WARNING] Project has moved to http://github.com/Retroshare/Retroshare
Client-server networking library
Remote control your linux console encrypted trough Jabber chat service
A remake of the original BNX Chatterbot for IRC
Chat Messenger - Open Source Social Network - Online Chess Game
A GTalk client for Linux using Qt4 and libgloox.
Hacker-like Retro Chat.