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.

A fundamental overview of operating systems (OSes) with an emphasis on practice. Topics covered include: OS structure, OS models, OS abstractions, concurrency sources, concurrency challenges, ...

QNodeOS is the world's first operating system designed for quantum computers and will enable connections between different ...

In most cases that took the form of advising you to move your Windows or Mac OS computer over to a more open operating system such as GNU/Linux. Sound advice if you’re looking for software ...

When it comes to modern operating systems for PowerPC-based systems like pre-Intel Macs, or other PowerPC-based systems like older or newer AmigaOS-compatible systems, there is an increasing lack ...