Without an operating system application software can not be installed. It’s examples are Photoshop, VLC media player, Mozilla Firefox, Opera, Google chrome etc. Operating System: An operating system is a computer program, works as interface between user and hardware and provides common services for computer programs.

Which is not an operating system?

Android is not a operating system.

Which software is an operating system?

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. Nearly every computer program requires an operating system to function. The two most common operating systems are Microsoft Windows and Apple’s macOS.