Out of curiosity, have you compared it to SOGo?

I really like SOGo because it includes Samba4 and can function as a total solution (Domain Controller as well as Groupware Server), and will work with the IMAP server of your choice (comes bundled with dovecot, which is the best anyway).

It has native Outlook support (even remote), and supports most every mobile client out there...


On 2013-02-18 5:44 AM, Torsten Grote <grote@kolabsys.com> wrote:
On Friday 15 February 2013 20:48:08 Ed W wrote:
- The most functional and best looking calendar (to my eye) is the kolab 
calendar. However, it's completely non caldav and adding that would be 
some work. Spend your money here if you want the best. (Actually also a 
potentially great todo and contacts app)
If somebody wants to support this work, please contact me off-list.

Kind Regards,
Torsten

--

Best regards,

Charles