System Software and Operating System

An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.

System software is a type of computer program that is designed to run a computer's hardware and application programs. ... The operating system is the best-known example of system software. The OS manages all the other programs in a computer. System software is used to manage the computer itself.