Here’s an unsolicited testimonial for a BSD-based company. My employer recently bought some of the assets of another company, in another state. I showed up not sure exactly what I’d encounter, since the facility had never had anything better than out-of-state IT support via phone, and there had been very little time to plan.
The facility had 3 different network gateway devices from varying manufacturers, all old, and mostly dead. The one working ancient Linksys small business gateway wasn’t physically able to work the way I wanted for extending our corporate network. So, in a mild panic, I grabbed one of the defunct machines there and installed pfSense - a FreeBSD-based firewall/gateway solution, for those who aren’t familiar with it. This is not unlike Michael W. Lucas’s BSD Origin Story.
It worked wonderfully. It was very easy to configure. I had exactly one problem: certain protocols like RDP would drop every few minutes. I bought the basic support tier for pfSense – and had a working answer immediately. Even with the support purchase, this has been cheaper and less work than purchasing the Cisco equipment my workplace normally uses.