Microsoft Windows is one of the popular operating system types and is preloaded on most new PC hardware.
1
Head-to-head in the competition with Microsoft Windows is Apple's macOS. macOS and Windows are both examples of proprietary operating systems.
2
Google's Android OS. is the primary OS for Google mobile devices like smartphones and tablets.
3
Apple's iOS is another mobile operating system used exclusively for iPhones, some of the most popular mobile devices on the market.
4
Linux is different from Windows and Apple in that it's not proprietary software but rather a family of open source systems.
5