Shout - The self-hosted web IRC client
Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
UnrealIRCd - UnrealIRCd is an Open Source IRC Server, serving thousands of networks since 1999.
Forumotion.com - Create a free forum : free forum hosting, free forum skins, templates editing, chatbox, RPG mod... Choose PhpBB 2 - 3, Invision or PunBB. Create forums now!
irssi - Irssi is a terminal based IRC client for UNIX systems.
Proboards - ProBoards is a host of free forums with customer service.