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.

Earlier this year, a company called Parallels, Inc. got a lot of attention when it showcased its Parallels Desktop software for the Mac. The application &#151 which uses a technology called ...

You can find real-time operating systems (RTOS) everywhere. They are as ubiquitous as their more familiar operating-system cousins – Windows, Mac OS and Unix – that control software applications and ...

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