System software
ORIGINAL OPERATING SYSTEM OF APPLE MAC (1984–2001)
MacOS (Classic); Mac OS Classic (operating system); Mac OS Classic; Macintosh System Software; Macintosh System; Classic MacOS; Mac OS classic; Apple System 2; System Software; "Classic" Mac OS; Classic Mac OS (operating system); Talk:Mac OS/Classic Mac OS; (classic) Mac OS; (Classic) Mac OS; "classic" Mac OS; Mac OS (classic); System 2.1; System 2.0; System 2.1 (Apple); System 2.0 (Apple); System 2 (Apple); System 3 (Apple); System 3.0 (Apple); System 4.1 (Apple); System 4.0 (Apple); System 4 (Apple); Apple System 2.0; Apple System 2.1; Apple System 3; Apple System 3.0; Apple System 4.0; Apple System 4; Apple System 4.1; Talk:Mac operating systems/Classic Mac OS; System Software 3; System Software 2; System Software 4; System Software 5; Classic macOS; Mac OS V; Mac OS IV; Mac OS III; Mac OS II; Mac OS I; Talk:Macintosh operating systems/Classic Mac OS
System software is software designed to provide a platform for other software. Examples of system software include operating systems (OS) like macOS, Linux, Android and Microsoft Windows, computational science software, game engines, search engines, industrial automation, and software as a service applications.