Please be aware that the Zarafa apps are soon to be obsolete and will only receive updates for a limited time. In its place you can install the Kopano apps, which are already recommended for new installations. Kopano is currently working on an easy way to migrate all data from the Zarafa apps to Kopano and will provide this in time for the End of Life of this app scheduled for the 30. November 2016.
Zarafa web meetings provides an easy intuitive use of the WebRTC technology in creating online meetings just with the use of a browser. It does not require any plugins or extra software to run. The basic requirement is a browser with WebRTC support, which for example is provided by Chrome or Firefox. This plugin integrates Zarafa web meetings with WebApp allowing direct interaction in your daily work.