Neutron Chat allows you to communicate in networks
Neutron Chat is a simple chat application for communicating in networks or in the internet via the TCP/IP protocoll and your own server. It is based on the .NET Framework 4.0 and uses AES-encryption.
And it's NSA-proof. Just sayin'.
New (and presumably last) version: 3.3.1
Do you know Dungeon And Dragon, if so you will like to participate in this project to build a small game base upon it, A style of MUD (Multi-user Dungeon) base on the rules of DnD 3.5. Video conference and audio will likely be input to help the game.