A software system is a system of intercommunicating components based on software forming part of a computer system combination of hardware and software . It consists of a number of separate programs, configuration files, which are used to set up these programs, system documentation, which describes the structure of the system, and user documentation, which explains how to use the system
software system should be distinguished from the terms computer program and software. The term computer program generally refers to a set of instructions that perform a specific task. However, a software system generally refers to a more encompassing concept with many more components such as specification, test results, end-user documentation, maintenance records as :

• Operating Systems
• Office Tools Software
• Security and Backup Software
• Virtualization Software