OPNsense is open source, FreeBSD-based firewall and routing software developed by Deciso. It is a fork of pfSense, which in turn was forked from m0n0wall.
"The" Fritzbox, stylised as FRITZ!Box, is a series of residential gateway devices produced by the German company AVM GmbH.
FRITZ!OS is the FRITZ!Box operating system and can be easily controlled via your browser. User-friendly menus, easy-to-understand wizards, and the optional advanced mode come in handy in all scenarios.
Proxmox Virtual Environment is an open-source server virtualization environment. It allows deployment and management of virtual machines and containers
Open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts.