Google
Enables users to search the Web, Usenet, and images. Features include PageRank, caching and translation of results, and an option to find similar pages.
http://www.google.com/
MSN Search
Microsoft provides search of the web, news, images and its own encyclopedia, Encarta. Also offers desktop search via a toolbar.
http://www.msn.com/
Yahoo!
The first large scale directory of the Internet, now a major portal offering search engine results, customizable content, chatrooms, free e-mail, clubs.
http://www.yahoo.com/