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.

Just about every piece of technology has some form of an operating system – desktops, laptops, mobile phones, and servers, to name just a few. The Merriam-Webster definition of an operating system?

Modern PCs, tablets and smartphones have an easy-to-use, graphical veneer that hides the complexity of the operating system software beneath that enables them work. While the developers of your device ...

Modern operating systems are all far more secure than their historic counterparts, but which operating system is the safest? That somewhat depends on how you use it — no operating system is “safe” if ...

The computer's master control program. When a computer is turned on, a small "boot program" loads the operating system. Although additional system modules may be loaded as needed, the main part, known ...