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Web search engine

A web search engine is designed to search for information on the [World Wide Web] . The search results are usually presented in a list of results and are commonly called hits . The information may consist of [web page] s, images, information and other types of files. Some search engines also [mine data] available in [database] s or [open directories] . Unlike [Web directories] , which are maintained by human editors, search engines operate [algorithm] ically or are a mixture of algorithmic and human input.

During the early development of the web, there was a list of [webserver] s edited by [Tim Berners-Lee] and hosted on the [CERN] webserver. One historical snapshot from 1992 remains. As more webservers went online the central list could not keep up. On the [NCSA] site new servers were announced under the title "What's New!"

The very first tool used for searching on the Internet was [Archie] .
"Internet History - Search Engines" (from [Search Engine Watch] ),
Universiteit Leiden, Netherlands, September 2001, web:
[LeidenU-Archie] .

The name stands for "archive" without the "v." It was created in 1990 by [Alan Emtage] , a student at [McGill University] in [Montreal] . The program downloaded the directory listings of all the files located on public anonymous FTP ( [File Transfer Protocol] ) sites, creating a searchable database of file names; however, Archie did not index the contents of these sites.

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