Atlassian is certainly putting a lot of attention to its Hipchat group chat service
https://www.hipchat.com/

Two weeks ago, it acquired BlueJimp, makers of the Jitsi open source video conferencing system (https://jitsi.org/) that the TTF tested in January this year.

http://techcrunch.com/2015/04/21/atlassian-acquires-open-source-video-conferencing-company-bluejimp-to-power-hipchats-video-chat/

Today, Atlassian has acquired Hall (www.hall.com) a group chat service
http://techcrunch.com/2015/05/06/atlassian-acquires-team-chat-service-hall-to-bring-more-non-technical-users-to-hipchat/

Dev Anand