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Fig 1: a screenshot from a software application. Utility software is software such as anti-virus software, firewalls, disk defragmenters and so on which helps to maintain and protect the computer system but does not directly interface with the hardware.
Software: 1  A set of instructions given to the computer is called software. 2  You cannot touch and feel software. 3  Software is developed by writing instructions in programming language. 4  The operations of computer are controlled through software. 5  If software is damaged or corrupted, its backup copy can be reinstalled.