From DistroWatch :
Zentyal is a new name for eBox Platform, an Ubuntu-based distribution for servers. Version 2.2, announced today, is the project's first release under the new name: "Your favorite development team proudly presents Zentyal 2.2. Zentyal is a Linux small business server that can act as a gateway, unified threat manager, office server, infrastructure manager, unified communications server or a combination of them. The development of Zentyal started in 2004 and currently it is an enterprise-level Linux server solution that integrates over 30 open source network management tools in one single technology. Highlights: new distribution base - Ubuntu 10.04; improved software management: the software management module has been completely revamped, with usability and visual improvements; friendlier graphical environment...."

Website : http://www.zentyal.org/