Univention, the manufacturer of the Linux Enterprise distribution Univention Corporate Server, has just published the UCS Core Edition. This is freely available for business use so companies don't need to buy maintenance services. It replaces the previous "free for personal use“ license, which was for private use only.
With UCS' integrated infrastructure and identity management system, IT administrators can centrally manage server and desktop systems across locations and platforms. Other great features are Active Directory functions for integration or migration from Microsoft Windows and the App Center, which allows administrators to use UCS freely as a platform for the management of many well-known enterprise applications - on-premises, in the cloud or in hybrid environments.
More information on UCS including download possibilities via Univention's blog.