Internet Search Engines
Search Engines
Major Search Engines--Student Search Engines Below
AltaVista--http://www.altavista.com
AltaVista is one of the oldest crawler-based search engines on the web. It has a large index of web pages and a wide range of power searching commands. It also offers news search, shopping search and multimedia search. AltaVista opened in December 1995. It was owned by Digital, then run by Compaq (which purchased Digital in 1998), then spun off into a separate company which is now controlled by CMGI.
Ask Jeeves--http://www.askjeeves.com
Ask Jeeves is a human-powered search service that aims to direct you to the exact page that answers your question.
Google--http://www.google.com
Google is a top choice for web searchers. It offers the largest collection of web pages of any crawler-based search engine. Google makes heavy use of link analysis as a primary way to rank these pages. This can be especially helpful in finding good sites in response to general searches such as "cars" and "travel," because users across the web have in essence voted for good sites by linking to them. The system works so well that Google has gained wide-spread praise for its high relevancy. Google provides web page search results to a variety of partners, including Yahoo and Netscape Search (see below). Google also provides the ability to search for images, through Usenet discussions and its own version of the Open Directory (see below).
HotBot--http://www.hotbot.com
In most cases, HotBot's first page of results comes from the Direct Hit service (see above), and then secondary results come from the Inktomi search engine, which is also used by other services. It gets its directory information from the Open Directory project (see below). HotBot launched in May 1996 as Wired Digital's entry into the search engine market. Lycos purchased Wired Digital in October 1998 and continues to run HotBot as a separate search service.
Lycos--http://www.lycos.com
Lycos started out as a search engine, depending on listings that came from spidering the web. In April 1999, it shifted to a directory model similar to Yahoo. Its main listings come from AllTheWeb.com with some results from the Open Directory project. In October 1998, Lycos acquired the competing HotBot search service, which continues to be run separately.
MSN Search--http://search.msn.com
Microsoft's MSN Search service is a LookSmart-powered directory of web sites, with secondary results that come from Inktomi. Direct Hit data is also made available.
Open Directory--http://dmoz.org/
The Open Directory uses volunteer editors to catalog the web. Formerly known as NewHoo, it was launched in June 1998. It was acquired by Netscape in November 1998, and the company pledged that anyone would be able to use information from the directory through an open license arrangement. Netscape itself was the first licensee. Netscape-owner AOL also uses Open Directory information, as does Google and Lycos.
Yahoo--http://www.yahoo.com
Yahoo is the web's most popular search service and has a well-deserved reputation for helping people find information easily. The secret to Yahoo's success is human beings. It is the largest human-compiled guide to the web, employing about 150 editors in an effort to categorize the web. Yahoo has well over 1 million sites listed. Yahoo also supplements its results with those from Google. If a search fails to find a match within Yahoo's own listings, then matches from Google are displayed. Google matches also appear after all Yahoo matches have first been shown. Yahoo is the oldest major web site directory, having launched in late 1994.
Student Search Engines
Ask Jeeves is a unique service where you enter a question, and Ask Jeeves tries to point you to the right web page that provides an answer. At Ask Jeeves For Kids, answers have been vetted for appropriateness. Also, if Ask Jeeves cannot answer a question, it pulls results from various search engines in its metacrawler mode. At Ask Jeeves For Kids, no site that is on the CyberPatrol block list is supposed to be listed.
KidsClick!
http://www.kidsclick.org/
Backed by librarians, KidsClick lists about 5,000 web sites in various categories.
Yahooligans
http://www.yahooligans.com/
Yahoo for kids, designed for ages 7 to 12. Sites are hand-picked to be appropriate for children. Also, unlike normal Yahoo, searches will not bring back matched found by crawling the web, if there is no match from within the Yahooligan listings. This prevents possibly objectionable sites from slipping onto the screen. Additionally, adult-oriented banner advertising will not appear within the service. Yahooligans is the oldest major directory for children, launched in March 1996.