Spiceworks inventory can't scan a pfSense router, suggesting it might be a Mac, which like pfSense is based on BSD.
I enabled SSH on pfSense (easy - check a box) and PuTTY can SSH log in with the same username and password that the web configurator uses. Spiceworks scan tries SSH but times out.
It would be nice to have pfSense in our inventory - log file filling up disk, maybe NICs alive, not much else I can think of - but hardly high priority.