macOS is a fair candidate. Second hand Mac can be cheap, esp Intel-based. Hackintosh / VM is also a candidate.
OPNsense, PFsense, TrueNAS, Sony Playstation, Nintendo Switch, Juniper, Ruckus/Brocade, ...
Give OPNsense (in a VM) a whirl as replacement for OpenWrt. I like it a lot.
> I use Linux for work, so I have to go back and forth between ifconfig on my home boxes and production Linux, but ip addr on my dev box. And sometimes netstat and sometimes ss, etc. It'd be nicer if everything was consistent and didn't change for what seems like the sake of change, but it is what it is.
macOS/Linux users might like this wrapper [1]. I don't know one for ss/netstat though.