Search systems are tools designed to help users find information quickly and efficiently. They index vast amounts of data, such as web pages, documents, and images, allowing users to enter keywords or phrases to retrieve relevant results. Popular examples of search systems include Google, Bing, and Yahoo. These systems use algorithms to rank results based on relevance and quality, ensuring that the most useful information appears at the top. Additionally, search systems often incorporate features like filters, suggestions, and advanced search options to enhance the user experience and improve the accuracy of the results.