OpenBSD, both at work and home (router, firewall, VPN server and endpoints, mail server, web server, CVS, desktop...)
Linux in one workstation at home, great for tasks like installing GrapheneOS, or running software not available in BSD systems. Sometimes Junos, IOS and other networking OSs too on certain appliances on my internal network... but anything exposed to the Internet is OpenBSD -current or, at least, -stable.