http://www.google.com

Enables users to search the Web, Usenet, and images. Features include PageRank, caching and translation of results, and an option to find similar pages. The company's focus is developing search technology.

http://www.dogpile.com

Meta-search engine.

http://www.yahoo.com

Personalized content and search options. Chatrooms, free e-mail, clubs, and pager.

http://www.lycos.com

North American portal with email, YellowPages, heavily integrated search engine, personal settings and a directory.

http://www.hotbot.com

Offers a search powered by a choice of Hotbot (Inktomi-powered), Google or AskJeeves. There are options to block offensive language, customize search results, and skins.