An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

This is a list of operating systems. Computer operating systems can be categorized by technology, ownership, licensing, working state, usage, and by many other characteristics. In practice, many of …

An operating system (OS) is a kind of computer program that helps a computer to interact with other machines or with people. An OS is not actually one single program but a group of small programs, …

Computer operating systems (OSes) provide a set of functions needed and used by most application programs on a computer, and the links needed to control and synchronize computer hardware.

Nov 21, 2025 · Operating system, program that manages a computer’s resources, especially the allocation of those resources among other programs.

This article presents a timeline of events in the history of computer operating systems from 1951 to the current day. For a narrative explaining the overall developments, see the History of operating …

Dec 27, 2025 · An Operating System (OS) is system software that manages the hardware and software resources of a computer. It acts as an interface between the user and the machine, enabling smooth …

Jul 23, 2025 · An operating system is a type of software that acts as an interface between the user and the hardware. It is responsible for handling various critical functions of the computer and utilizing …

Apr 7, 2025 · What Is an Operating System? An operating system or OS is software installed on a computer's hard drive that enables the computer hardware to communicate and operate with the …

Only when there are no appropriate subcategories should an article be categorized in the category Operating systems (see Wikipedia:Categorization and subcategories for an explanation). Articles …