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.

(1) For the Linux-based smart device operating system, see webOS. (2) An operating system that runs in a server on the Web. See Web server. Because all browsers perform "almost" the same no matter ...

Apple created the operating system iOS for its iPhone. Since its debut, Apple has unveiled new versions of the software regularly, often adding and enhancing features. iOS was unveiled with the ...