An operating system is the essential software that's needed to run your computer's suite of software. Everything from video games to web browsing, basic word processing, and more is down thanks to ...

What does operating system software actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

What are some examples of open-source software? Some of the most famous software systems are open source, such as Linux, the operating system that Google’s Android mobile system was built on top of.