Breathe-then read the quotes from the first part of this post - ok well maybe even read all of it :)
Will the Zimbra server and Web client remain open source?
* Access to the Zimbra source code will always remain available and free.
* We will continue to make source code available to view, modify and compile and unencumbered use.
Will new Zimbra projects and additions to the current Zimbra suite be open source?
* Zimbra will continue its practice of offering both an open and certified, network editions of the software.