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System utilities are specialized software tools designed to maintain, manage, and optimize computer systems. They assist with essential tasks such as file management, disk cleanup, backup, performance monitoring, and troubleshooting. Unlike applications built for end-user productivity, system utilities work behind the scenes to improve efficiency, stability, and security of the operating system. They can be built into the OS or installed as third-party tools to extend functionality. By automating maintenance and diagnostic tasks, system utilities help prolong system lifespan and ensure smooth day-to-day operations.

Search engines are software systems designed to help users find information on the internet by searching through vast databases of web pages, documents, and other content. They use algorithms to index, rank, and retrieve relevant results based on user queries, providing the most relevant, authoritative, and popular results. Search engines typically include features such as keyword search, advanced filters, personalized results, and the ability to search specific content types (e.g., images, videos, academic articles). Popular search engines often use machine learning and artificial intelligence to improve the accuracy of search results and enhance user experience.