Computer utilities are software tools designed to help manage, maintain, and optimize computer systems. They perform various tasks such as file management, system monitoring, and disk cleanup. Common examples include disk defragmenters, antivirus programs, and backup software, which enhance the overall performance and security of a computer. These utilities can be built into the operating system, like Windows or macOS, or available as third-party applications. By using computer utilities, users can ensure their systems run smoothly, protect against malware, and recover lost data, ultimately extending the lifespan of their devices.