1)   Live Chat Software for Customer Support 1.5
Add a rich suite of live chat features to your web site. Interact proactively with site visitors and increase sales. Connect with new customers through a dialog. Watch visitors on your web site in real time. Fully customizable visitor interface.

 2)   123 Flash Chat Joomla Module/Component 1.5.3
A live chat solution for Joomla: fast, easy, secure& high-load support. It's full-featured Java chat server and Flash client with custom skin, linkable to external database. It is really Multilingual and Multimedia Chat.