Both actually! :) RT @JDOS_ICT_SOL: @zarafagroupware File access within Zarafa; ownCloud plugin? Z-Files?
The Best Open Source Email & Collaboration Software
Univention is an identity and infrastructure management systems.
By using the integration kit for Zarafa it's possible to use Zarafa on the Univention Corporate Server (UCS).
All Zarafa features are available for administrators and users in an unified interface.