ClearOS Community is a cloud-connected Server, Network, and Gateway operating system designed for Linux enthusiasts and small organizations. You can think of it as next generation small business server that you can install in a virtual machine, in the cloud or on a good old on-premise server box. ClearOS comes with a Marketplace full of easy to install apps and the solution is a snap to configure thanks to the intuitive web-based interface.
http://www.clearfoundation.com/Software/downloads.html