I brought it up in my last live stream, I have not decided if I want to make video about it due to Untangle becoming less and less popular. Unless they changed things, Sophos requires a registration and licence to active for the free home use edition which means they could end it whenever they want. The best choice for full open source would be pfnense CE, (or pfsense plus because you can go back to CE with the same config) but I shy away from OPNSense as they are slow on security updates OPNSense VS pfsense Security