TShock is a server modification for Terraria.
Continuous Integration: http://ci.tshock.co/
Support Forums: http://tshock.co/
Wiki: https://tshock.atlassian.net/wiki/display/TSHOCKPLUGINS/Home
We communicate on the ShankShock Temspeak server whilst programming.
IP: ts3.shankshock.com
Port: 9987
We love IRC (although a little less than Teamspeak). If you need support, or just want to hang around, feel free to join.
IP: irc.shankshock.com
Channel: #terraria