We are always asked by clients, what is the best operating system? The answer is always the same, whichever one is working! It should come as no surprise that different OS's are better at performing various tasks, but we usually see Microsoft Windows in a business environment for desktop and server use. Windows is great for business because it provides an easy and predicable environment for your employees.
OS's we support:
We do unofficially support other Operating Systems if it is mission critical to your business. For example, we have several companies that use Berkeley Software Distribution (BSD) based on FreeBSD/OpenBSD for TrueNAS and pfSense. We also have clients that use system on a chip (SoC) hardware like Raspbian OS for the Raspberry Pi.