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| 1993 || September 2 || First web search engine || [[wikipedia:W3Catalog|W3Catalog]], written by [[wikipedia:Oscar Nierstrasz|Oscar Nierstrasz]] at the [[wikipedia:University of Geneva|University of Geneva]], is released to the world. It is the world's first web search engine. It does not rely on a crawler and indexer but rather on already existing high-quality lists of websites. One of its main drawbacks is that the bot accesses each page hundreds of times each day, causing performance degradation.<ref name=seh/><ref name=internetseh/><ref name="history">{{cite web |url=http://scg.unibe.ch/archive/software/w3catalog/|title=W3 Catalog History}}</ref><ref name="virtual">{{cite web|url=http://www-ksl.stanford.edu/people/gruber/virtual-documents-htw/|title=Virtual documents that explain How Things Work: Dynamically generated question-answering documents|author=Thomas R. Gruber, Sunil Vemuri and James Rice|date=December 1995|publisher=Knowledge Systems Laboratory, Stanford University}}</ref><ref>{{cite web |title=First Search Engine |url=https://thisdayintechhistory.com/09/02/first-search-engine/|website=thisdayintechhistory.com |accessdate=10 April 2020}}</ref>
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| 1993 || October/November || Second web search engine || [[wikipedia:Aliweb|Aliweb]], a web search engine created by [[wikipedia:Martijn Koster|Martijn Koster]], is announced. It does not use a web robot, but instead depends on being notified by website administrators of the existence at each site of an index file in a particular format. The absence of a bot means that less bandwidth is used; however, most website administrators are not aware of the need to submit their data.<ref name=seh/><ref name=internetseh/><ref>{{cite book |last1=Maze |first1=Susan |last2=Moxley |first2=David |last3=Smith |first3=Donna J. |title=Authoritative Guide to Web Search Engines |url=https://books.google.com.ar/books?id=ZkxqAAAAMAAJ&q=%22Aliweb%22+%221993%22&dq=%22Aliweb%22+%221993%22&hl=en&sa=X&ved=0ahUKEwjUwJaDttToAhUiHbkGHb6JDMsQ6AEIYzAH}}</ref><ref>{{cite book |title=Auxiliar Administrativo. Servicio Canario de Salud. SCS. Temario Vol. II. |edition=Editorial CEP |url=https://books.google.com.ar/books?id=7y-xDwAAQBAJ&pg=PA326&dq=%22Aliweb%22+%221993%22&hl=en&sa=X&ved=0ahUKEwjUwJaDttToAhUiHbkGHb6JDMsQ6AEIODAC#v=onepage&q=%22Aliweb%22%20%221993%22&f=false}}</ref><ref name="ddd">{{cite book |title=Enhancing the Power of the Internet |edition=Masoud Nikravesh, Ben Azvine, Ronald R. Yager, Lofti A. Zadeh |url=https://books.google.com.ar/books?id=R2f8CAAAQBAJ&pg=PA17&dq=%22Aliweb%22+%221993%22&hl=en&sa=X&ved=0ahUKEwjUwJaDttToAhUiHbkGHb6JDMsQ6AEIMDAB#v=onepage&q=%22Aliweb%22%20%221993%22&f=false}}</ref>
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| 1993 || December || First web search engine to use a crawler and indexer || [[wikipedia:JumpStation|JumpStation]], created by [[wikipedia:Jonathon Fletcher|Jonathon Fletcher]], is released. It is the first WWW resource-discovery tool to combine the three essential features of a web search engine (crawling, indexing, and searching).<ref name=seh/><ref name=internetseh/><ref>{{cite web|url=http://metro.co.uk/2009/03/15/why-we-nearly-mcgoogled-it-545208/|title = Why we nearly McGoogled it|date = March 15, 2009|accessdate = February 3, 2014|publisher = ''Metro''}}</ref>
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| 1994 || January || Search engine launch || {{w|Stanford University}} students {{w|Jerry Wang}} and {{w|David Filo}} create {{w|Yahoo!}} in a campus trailer. Yahoo starts originally as an Internet bookmark list and directory of interesting sites. Webmasters have to manually submit their page to the Yahoo directory for indexing so that it would be there for Yahoo to find when someone performed a search.<ref>{{cite book |last1=So |first1=Shermon |last2=Westland |first2=J.Christopher |title=Red Wired: China’s Internet revolution |url=https://books.google.com.ar/books?id=vbqIAAAAQBAJ&pg=PA1&dq=%22yahoo%22+%221994%22+%22wang%22&hl=en&sa=X&ved=0ahUKEwidqce2vtToAhX4HLkGHcw-BL4Q6AEIVDAF#v=onepage&q=%22yahoo%22%20%221994%22%20%22wang%22&f=false}}</ref><ref>{{cite book |last1=Huff |first1=Priscilla Y |title=Business and Industry |url=https://books.google.com.ar/books?id=mywYAAAAIAAJ&q=%22yahoo%22+%221994%22+%22wang%22+%22filo%22&dq=%22yahoo%22+%221994%22+%22wang%22+%22filo%22&hl=en&sa=X&ved=0ahUKEwiNs-HSvtToAhWNErkGHVkZBGkQ6AEIKDAA}}</ref><ref name="20 Years of SEO: A Brief History of Search Engine Optimization"/><ref name="wordstream.come"/>
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| 1994 || January || New web search engine || [[wikipedia:Infoseek|Infoseek]] is launched.<ref name=seh/><ref name=internetseh/>
