UCS is a pre-configured Linux server operating system featuring:

Active Directory-like domain services compatible with Microsoft Active Directory; a mature and easy-to-use web-based management system for user, rights and infrastructure management; a scalable underlying concept suited for single server scenarios as well as to run and manage thousands of clients and servers for thousands of users within one single UCS domain; an app center providing single-click installation and integration of many business applications from 3rd parties and Univention; management capabilities to manage Linux- and UNIX-based clients; command line, scripting interfaces and APIs for automatization and extension

The complete source code of UCS is provided under an Open Source license.