The Web search engine is a specialized Web site whose main function is to help find information stored on other Web sites. Web search engine is a browser intended for search of information on the World Wide Web. Information may be web pages, images, and other file types. Some searchers also search for information available in thematic groups, databases or open directories. Unlike web directories that maintain texts (people), Internet browsers work by algorithm or are a combination of algorithms and human enrollment. The most well-known Internet search engine in the Western world is Google, but its results are weaker than America and Western Europe, so outside of these western areas for those countries, Altavista is more efficient. In these strongest search engines there is a possibility of targeted and special searches, where it is enough to enter a word or more keywords, that is, a keyword, and after a relatively short time they get numerous links to the search term. The first tool used to search the Internet was Archie, created in 1990. Shortly thereafter, many search engines emerged for popularity. Some of them were: Excite, Infoseek, AltaVista, Yahoo !, MSN Search. In the year 2000, Google's search engine went to the top. It is estimated that there are more than twenty million internet servers. Web search engines can answer the question of how to find the requested information among all possible information on the Internet.