What is a search engine?

A search engine can be defined as a web site with tools which help your find information on the Internet.  There are several different types of search engines, according to what they are used to search for:

World Wide Web search engines are used for finding web documents.   These come in two basic flavours: those that continually sift through the links in its database adding new and updated pages to its database (à la AltaVista) and those that contain manually added links or reviews of web sites (à la Yahoo).

Newsgroup search engines can help you find threaded discussions on specific topics.  For example, if you are having a hardware problem and your BIOS gives you nothing more than a cryptic message to go on, entering this cryptic message as a search parameter can lead you to messages by other people who have had this very same problem, letting you see how they worked through it.

MetaSearch sites cull the results from several search engines and present them to you on a single screen.

White Pages services are used for finding e-mail addresses.

Here is a breakdown of a number of search engine sites and what they do for you:

Site name and URL

Web content

Usenet Metasearch White Pages

Comments

Indexed Reviewed
AltaVista - http://www.altavista.digital.com/ Yes   Yes     My personal favourite for web content.
Excite - http://www.excite.com/ Yes Yes Yes      
Hotbot - http://www.hotbot.com/ Yes   Yes     Sometimes returns more hits than AltaVista, you may also find it easier to use.
Infoseek - http://www.infoseek.com/ Yes Yes Yes     Features both indexed and reviewed sections, for example the educational research section.
Lycos - http://www.lycos.com/ Yes Yes       Some may find its insistence on going straight to the Spanish version annoying.
Magellan - http://www.mckinley.com/ Yes Yes       Makes it easy choose whether to search all web sites or just rated sites. Has rated "green light" sites.
Open Text Index - http://index.opentext.net/ Yes         Has recently modified its approach to target business users.
WebCrawler - http://www.webcrawler.com/ Yes Yes       Reviewed content a recent addition; falls a bit short on content.
Yahoo - http://www.yahoo.com/   Yes       My favourite for locating a specific organization.
DejaNews - http://www.dejanews.com/     Yes      
Reference.COM - http://www.reference.com/     Yes      
All4One - http://www.all4one.com/       Yes   Calls four sites and conveniently displays them in four frames.  It also managed to provoke a 'blue screen' error on my computer.
Highway 61 - http://www.highway61.com/       Yes   A search engine with a sense of humour.  It calls 7 sites, including Yahoo, Excite, HotBot, Infoseek and Lycos.
MetaCrawler - http://www.metacrawler.com/       Yes   Calls 9 sites, including Excite, Lycos, Open Text and WebCrawler.
Savvy Search - http://guaraldi.cs.colostate.edu:2000/form       Yes   Available in over two dozen languages, this search engine draws upon even more sites.
Bigfoot - http://www.bigfoot.com/         Yes  
Switchboard - http://www.switchboard.com/         Yes  
Four11 - http://www.four11.com/         Yes My personal favourite.
internet @ddress.finder - http://www.iaf.net/         Yes This one's only listing for me is an e-mail address that I had for about three months over three years ago.
WhoWhere? - http://www.whowhere.net/         Yes  

Site name and URL

Indexed Reviewed Usenet Metasearch White Pages

Comments

Web content

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