DynarchChat

This is Web chat the way it should be done. Having features similar to IRC, DynarchChat doesn't require anything special on the server or client side and provides fast response and low bandwidth usage. Users can be logged into multiple chatrooms or have private conversations simultaneously, in a simple and intuitive TAB interface. Other unique features include line history and tab completion on the client side. It works with most recent browsers such as IE6, FireFox, Mozilla, Opera 7 and Safari.