There are several listed here, but most of them only work on x86, not consumer routers. https://en.m.wikipedia.org/wiki/List_of_router_and_firewall_distributio

There are several listed here, but most of them only work on x86, not consumer routers. https://en.m.wikipedia.org/wiki/List_of_router_and_firewall_distributions https://en.m.wikipedia.org/wiki/List_of_router_and_firewall_...