Apps similar to FRITZ!OS include OPNsense, which is free and open source. Other options are pfSense and MikroTik RouterOS. In total there are three Firewalls like FRITZ!OS for self-hosting and the web.
OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.
Netherlands
EU
pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more.
United States
Linux-based system converts standard PCs into customizable routers, featuring advanced firewall, VPN server and client, bandwidth control, QoS, wireless AP, captive portal, remote management, industry protocol support, automation, and scalable licensing for network needs.
LatviaEU
