A tool designed to search for information on the World Wide Web and the information might include regular Web pages, pictures or data, some of these engines based exploration data available in the latest e-books, databases and rely on human introductions are working software algorithms and inputs The idea of a human search engine Internet through a list of web servers that maintain the data and began using search engines to work to store information about thousands of pages are retrieved through what is known crawler web crawler, which was called the spider comes the stage of storage of data on web pages indexed in a database for later use when the user types a word or phrase to search for.