An operating system that is designed for a server. Normally, it is a complete operating system with file, task and job management; however, with some earlier products ...

A system software component that is external to the operating system kernel. If the phrase is used to refer to the operating system itself, it is redundant because an operating system "is" software.

There are a few different reasons why the average person — as opposed to an enthusiast tinkerer — might want to try out one of the many available flavors of free Linux-based operating systems. If ...