Zentyal, formerly known as eBox Platform, is a multi-purpose Linux Ubuntu remastered and it’s based on Ubuntu server 10.04 (LTS). It can function as a network gateway, unified threat manager, office server, infrastructure manager, and a unified communications server. The project’s source code is available under terms of the GNU General Public License, as well as under a variety of proprietary agreements. Zentyal is owned and sponsored by a single for-profit firm, the Spanish company eBox Technologies S.L., which holds the copyright to the codebase
The declared goal of this software it’s to be an alternative for small and medium business to Windows.