According to the Wikipedia a Web search engine is “a search engine designed to search for information on the World Wide Web. Information may consist of web pages, images and other types of files.” Some search engines also mine data available in newsgroups, databases, or open directories.
The very first tool used for searching on the Internet was Archie. Then came Veronica and Jughead, and the three of them searched the file names and titles stored in Gopher index systems. The first Web search engine was Wandex, a now-defunct index collected by the World Wide Web Wanderer, a web crawler developed by Matthew Gray at MIT in 1993. Another very early search engine, Aliweb, also appeared in 1993, and still runs today. Soon after, many search engines appeared and vied for popularity. These included Excite, Infoseek, Inktomi, Northern Light, and AltaVista. In some ways, they competed with popular directories such as Yahoo!. Later, the directories integrated or added on search engine technology for greater functionality.
Lets point out the most important ones nowadays:
An American public corporation, specializing in Internet search and online advertising,which began in January 1996. It is well-known for its web search service, which is a major factor of the company’s success. As of August 2007, Google is the most used search engine on the web with a 53.6% market share. In 2004, it launched its own free web-based e-mail service, known as Gmail. It indexes billions of Web pages, so that users can search for the information they desire, through the use of keywords and operators. Google has also employed the Web Search technology into other search services, including Image Search, Google News, the price comparison site Google Product Search, the interactive Usenet archive Google Groups, Google Maps, and more. Google has also developed several desktop applications, including Google Earth, an interactive mapping program powered by satellite and aerial imagery that covers the vast majority of the planet.
An American public corporation and global Internet services company founded in January 1994. The global network of Yahoo! websites receives 3.4 billion page views per day on average as of October 2007, making it one of the most visited U.S. websites. Yahoo acquired companies to expand its range of services, particularly Web 2.0 services. It offers diversified services; it provides vertical search services such as Yahoo! Image, Yahoo! Video, Yahoo! Local, Yahoo! News, and Yahoo! Shopping Search. Yahoo is built with search assist so 3 letters can be typed & yahoo will give sugestions of what is typed. It provides internet communication services such as Yahoo! Mail and Yahoo! Messenger, Yahoo! Mail is the largest e-mail service in the world with almost half the market share.Right now it only works on search (not images)On 1 February 2008, after its friendly takeover offer was rebuffed by Yahoo, Microsoft made an unsolicited takeover bid to buy Yahoo for 44.6 billion dollars in cash and stock.
Is the name of Microsoft’s web search engine, designed to compete with the industry leaders Google and Yahoo!. Live Search is accessible through Microsoft’s Live.com and MSN.com web portal. The new search engine offers some innovative features, such as the ability to view additional search results on the same web page and the ability to dynamically adjust the amount of information displayed for each search-result. It also allows the user to save searches and see them updated automatically on Live.com. The first public beta of Live Search was unveiled on March 8, 2006, with the final release on September 11, 2006 replacing MSN Search.
- Web search engine: http://en.wikipedia.org/wiki/Search_engine
- Google: http://en.wikipedia.org/wiki/Google
- Yahoo!: http://en.wikipedia.org/wiki/Yahoo%21
- Live Search: http://en.wikipedia.org/wiki/Live_search
- Search Engine History: http://www.searchenginehistory.com/