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| 1991 || || Pre-web search engine || The rise of [[wikipedia:Gopher (protocol)|Gopher]] (created in 1991 by [[wikipedia:Mark McCahill|Mark McCahill]] at the [[wikipedia:University of Minnesota|University of Minnesota]]) leads to two new search programs, [[wikipedia:Veronica (computer)|Veronica]] and [[wikipedia:Jughead (computer)|Jughead]]. Like Archie, they search the file names and titles stored in Gopher index systems. Veronica (''V''ery ''E''asy ''R''odent-''O''riented ''N''et-wide ''I''ndex to ''C''omputerized ''A''rchives) provides a keyword search of most Gopher menu titles in the entire Gopher listings. Jughead (''J''onzy's ''U''niversal ''G''opher ''H''ierarchy ''E''xcavation ''A''nd ''D''isplay) is a tool for obtaining menu information from specific Gopher servers. While the name of the search engine "Archie" was not a reference to the [[wikipedia:Archie Comics|Archie comic book]] series, "[[wikipedia:Veronica Lodge|Veronica]]" and "[[wikipedia:Jughead Jones|Jughead]]" are characters in the series, thus referencing their predecessor.<ref name=seh>{{Cite web|url=http://www.searchenginehistory.com/|title = Search Engine History|accessdate = February 3, 2014}}</ref>
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| 1991 || || <code>vlib.org</code> || Early development || English computer scientist {{w|Tim Berners-Lee}} in {{w|Geneva}} launches his WWW Virtual Library <code>vlib.org</code>. It is considered the oldest catalog on the [[w:World Wide Web|Web]].<ref name="wordstream.come">{{cite web |title=THE HISTORY OF SEARCH ENGINES |url=https://www.wordstream.com/articles/internet-search-engines-history |website=wordstream.com |accessdate=7 January 2020}}</ref><ref>{{cite book |last1=Van Rys |first1=John |last2=Meyer |first2=Verne |last3=Sebranek |first3=Patrick |title=The Research Writer, Spiral bound Version |url=https://books.google.com.ar/books?id=g4HP5TIs2-cC&pg=PA84&dq=Tim+Berners-Lee+set+up+a+Virtual+Library+%221991%22&hl=en&sa=X&ved=0ahUKEwi2l_vUlNToAhXTILkGHRNVD5IQ6AEIKDAA#v=onepage&q=Tim%20Berners-Lee%20set%20up%20a%20Virtual%20Library%20%221991%22&f=false}}</ref><ref>{{cite book |last1=Scheeren |first1=William O. |title=The Hidden Web: A Sourcebook |url=https://books.google.com.ar/books?id=KgTqbPXQqroC&pg=PA46&dq=Tim+Berners-Lee+set+up+a+Virtual+Library+%221991%22+vlib.org&hl=en&sa=X&ved=0ahUKEwjCgvDOltToAhWNI7kGHTwQCDIQ6AEIMzAB#v=onepage&q=Tim%20Berners-Lee%20set%20up%20a%20Virtual%20Library%20%221991%22%20vlib.org&f=false}}</ref><ref>{{cite book |last1=Tortosa |first1=Virgilio |title=Escrituras digitales: tecnologías de la creación en la era virtual |url=https://books.google.com.ar/books?id=5UF-g_q2rqQC&pg=PA179&dq=Tim+Berners-Lee+set+up+a+Virtual+Library+%221991%22+vlib.org&hl=en&sa=X&ved=0ahUKEwjCgvDOltToAhWNI7kGHTwQCDIQ6AEIPDAC#v=onepage&q=Tim%20Berners-Lee%20set%20up%20a%20Virtual%20Library%20%221991%22%20vlib.org&f=false}}</ref>
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| 1992 || || Virtual library of the web || [[wikipedia:Timothy Berners-Lee|Timothy Berners-Lee]] sets up the [[wikipedia:Virtual Library|Virtual Library]] (VLib), a loose confederation of topical experts maintaining relevant topical link lists.<ref name=seh/><ref name=internetseh/>
