pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
TrueNAS Core - TrueNAS Core (formerly FreeNAS) is a storage operating system strong and robust enough to meet the needs of enterprise level businesses.
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
OpenMediaVault - OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.
NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
Amahi - Amahi is a media, home and app server software known for its easy-to-use user interface. Amahi has the best media, backup and web apps for small networks.