2. Server for both need to be installed separately, below are download links and installation instructions:
- Messenger
https://github.com/unaio/jot-server/releases
https://github.com/unaio/jot-server/blob/master/README.md
- Rocket.Chat
http://ci.boonex.com/chat/latest.php
https://github.com/boonex/dolphin.pro/wiki/ChatPlus-Installation-Instructions-(Ubuntu-with-Apache)
https://github.com/boonex/dolphin.pro/wiki/ChatPlus-Installation-Instructions-(CentOS-with-Apache)