IRC Clients
One of the oldest chat standards on the net is something called IRC (Internet Relay Chat). Some sites offer IRC Chat via a Java Applet, but not all do. There are a huge array of networks and channels (rooms) on IRC, and most are not represented on a website. Couple that in with issues regarding Java and stability and support on some browsers just means it is best to download an IRC Client.
Use the link below to download an IRC Client: