NethServer
NethServer is designed with inbuilt modules that can be used for small offices and medium enterprises. It has been featured with web filter, mail server, file server, firewall, VPN, private cloud, etc.Users can turn any system into mail, DNS, FTP, cloud with the help of the inbuilt modules. In addition, it includes a web-based user interface to simplify the common administration tasks and enables the various pre-configured modules.