Apps similar to ClearOS include openmediavault, which is free and open source. Other options are pfSense, Cloudron, Univention Corporate Server (UCS) and Zentyal. You're spoiled for choice with Firewalls like ClearOS: we list more than 25 alternatives for Linux, self-hosting, Windows, the web and Mac.
RaspAP is feature-rich wireless router software that just works on many popular Debian-based devices, including the Raspberry Pi.
Linux Schools consists of Karoshi Server and Karoshi client. It is an Ubuntu LTS Server based solution especially designed for educational environments. It is a fully modular and scalable distribuition, mainly written in Bash.
OpenContrail is an Apache 2.0-licensed project that is built using standards-based protocols and provides all the necessary components for network virtualization–SDN controller, virtual router, analytics engine, and published northbound APIs.
