Utility Software

This lesson covers utility software — a type of systems software that performs specific maintenance and optimisation tasks to keep the computer running efficiently. Utility software is examined in AQA and OCR GCSE Computer Science.

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What Is Utility Software?

Utility software is a category of systems software designed to help manage, maintain, and optimise the computer system. Utilities are not used for day-to-day productivity tasks (that is what application software is for). Instead, they work "behind the scenes" to keep the system healthy, secure, and efficient.

Most operating systems come with built-in utilities, but users can also install third-party alternatives.

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Types of Utility Software

1. Anti-Malware / Antivirus Software

Purpose: Detect, quarantine, and remove malware (malicious software) from the system.

How it works:

• Scans files and programs against a database of known malware signatures.
• Uses heuristic analysis to detect suspicious behaviour from unknown threats.
• Can run real-time scans (checking files as they are opened) or scheduled scans (checking the whole system at a set time).
• Quarantines suspicious files — isolating them so they cannot harm the system.