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An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...
EOS – developed by ETA Systems for use in their ETA-10 line of supercomputers. EMBOS – developed by Elxsi for use on their mini-supercomputers. GCOS – a proprietary operating system originally developed by General Electric. MAI Basic Four – An OS implementing Business Basic from MAI Systems.
Unix ( / ˈjuːnɪks / ⓘ, YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 [1] at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
Linux is the leading operating system on servers (over 96.4% of the top one million web servers' operating systems are Linux), leads other big iron systems such as mainframe computers, and is used on all of the world's 500 fastest supercomputers (as of November 2017, having gradually displaced all competitors).
ChromeOS, [8] sometimes styled as chromeOS and formerly styled as Chrome OS, is a Linux distribution developed and designed by Google. It is derived from the open-source ChromiumOS, based on the Linux kernel, and uses the Google Chrome web browser as its principal user interface .
At macOS's core is a POSIX-compliant operating system built on top of the XNU kernel, (which incorporated large parts of FreeBSD kernel) and FreeBSD userland for the standard Unix facilities available from the command line interface. Apple has released this family of software as a free and open source operating system named Darwin.
The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers . Because of the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...
GNU. GNU ( / ɡnuː / ⓘ) [3] [4] is an extensive collection of free software (394 packages as of June 2024 [5] ), which can be used as an operating system or can be used in parts with other operating systems. [6] [7] [8] The use of the completed GNU tools led to the family of operating systems popularly known as Linux. [9]