Free IRCX chat server, follows IRCX RFC closely, python, open source. Written by Chris Webb using python in Summer 2006, developers welcome. Please continue to check here regularly for updates
Flash IRC client is a feature rich open source web-chat client. It's built in flash - no hassle in installation, cross platform, and secure. It is a convenient and affordable solution for adding state of the art chatroom(s) to any website.