System software is software designed to provide a platform for other software. Examples of system software include operating systems like macOS, Linux, Android and Microsoft Windows, computational science software, game engines, industrial automation, and software as a service applications.
In the late 1940s, the early days of computing, most application software was custom-written by computer users to fit their specific hardware and requirements. System software was usually supplied by the manufacturer of the computer hardware and was intended to be used by most or all users of that system.
Many operating systems come pre-packaged with basic application software. Such software is not considered system software when it can be uninstalled without affecting the functioning of other software. Examples of such software are games and simple editing tools supplied with Microsoft Windows, or software development toolchains supplied with many Linux distributions.
Some gray areas between system and application software are web browsers integrated deeply into the operating system such as Internet Explorer in some versions of Microsoft Windows, or Chrome OS and Firefox OS where the browser functions as the only user interface and the only way to run programs (and other web browsers can not be installed in their place).
Operating systems or system control program
The operating system (prominent examples being Microsoft Windows, macOS, Linux, and z/OS), allows the parts of a computer to work together by performing tasks like transferring data between memory and disks or rendering output onto a display device. It provides a platform (hardware abstraction layer) to run high-level system software and application software.
A user interface "allows users to interact with a computer." Either a command-line interface (CLI) or, since the 1980s a graphical user interface (GUI). This is the part of the operating system the user directly interacts with, it is considered an application and not system software.
Utility software or system support programs
Some organizations use the term systems programmer to describe a job function which is more accurately termed systems administrator. Software tools these employees use are then called system software. This utility software helps to analyze, configure, optimize and maintain the computer, such as virus protection. The term system software can also include software development tools (like a compiler, linker or debugger).
System software of video game consoles
- From Microsoft:
- From Nintendo:
- Wii system software
- Wii U system software
- Nintendo DSi system software
- Nintendo 3DS system software
- Nintendo Switch system software
- From Sony:
- PlayStation 3 system software
- PlayStation 4 system software
- PlayStation Portable system software
- PlayStation Vita system software
- "Panel: Systems Programming in 2014 and Beyond". Microsoft. Retrieved 4 December 2015.
- Millner, W. W.; Montgomery-Smith, Ann (2000). Information and Communication technology for Intermediate Gnvq. p. 126.
- Daeryong, Kim. "Microcomputer Information Technology". Retrieved 2013-09-22.
- "What is systems software?". Webopedia.com. Retrieved 2012-06-24.
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