Its attractive and responsive Java clients handle basic chat well, and you can insert emoticons into the text stream to add a little fun.
Expressions also has superb security and control features for administrators.
The full Java client provides a more graphical interface to the chat system but takes longer to download. It displays a scrollable list of expression icons, which you can send to other users. It lacks the scrollable display, but users can still send icons by typing the name of the icon. We found Expressions to be the easiest chat server to install and configure. Installation takes just a few minutes, and the default, generic configuration is usable right out of the box.