HipChat has been discontinued by Atlassian. The information below is out-dated.
Enterprise group chat behind the firewall
HipChat is Atlassian's professional solution for an enterprise group chat and instant messaging, which allows all employees to communicate quickly and easily in real time. Whether in personal chats with individual users or in group chats with the whole team - HipChat supports direct exchange and increases productivity and efficiency in your company. Now, HipChat is shipped as a hosted version to be integrated within your own IT infrastructure.
Atlassian develops professional Enterprise software, //SEIBERT/MEDIA helps clients use these systems to their full potential. We are an official Atlassian partner and one of the only free Atlassian Platinum Solution Partner in the world. We support you with licensing, introduction, operation, adjustments, and productive use of Atlassian products.
Interview with HipChat founder Pete Curley at Atlassian Summit 2013: