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.

first realize that whichever type you're choosing will probably be quite limited in terms of what you can use it for. Without support for major software tools alternative operating systems tend to ...

Capable of running apps and services inside isolated compartments, Qubes OS can provide a secure environment for your computing workloads ...

Software used to control the computer and develop and run applications. It includes programs such as operating systems, database managers, compilers, Web servers, router operating systems and ...