ClientSide has pioneered the use of AJAX and DHTML technologies to develop Web pages that interact like responsive PC applications since 1998.

Our flagship product, Chatterbox, is the only fully-featured instant-messaging client that needs no installation. It is compatible with standard open protocols, third-party servers and other instant messaging networks.

We offer many different solutions based on Chatterbox technology. The look, language and detailed functionality of the software are quickly configured to meet your specific needs.

ClientSide's BreakThru proxy server enables XMPP clients to be used through firewalls.

Contacts window

Person-to-person chat window