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Web search engines and some other websites use Web crawling or spidering software to update their web content or indices of other sites' web content. Web crawlers copy pages for processing by a search engine, which indexes the downloaded pages so that users can search more efficiently.
A search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The user inputs a query within a web browser or a mobile app, and the search results are often a list of hyperlinks, accompanied by textual summaries and images. Users also have the option of limiting the search to a specific type of results, such ...
Search engine (computing) In computing, a search engine is an information retrieval software system designed to help find information stored on one or more computer systems. Search engines discover, crawl, transform, and store information for retrieval and presentation in response to user queries. The search results are usually presented in a ...
Googlebot FAQ. Googlebot is the web crawler software used by Google that collects documents from the web to build a searchable index for the Google Search engine. This name is actually used to refer to two different types of web crawlers: a desktop crawler (to simulate desktop users) and a mobile crawler (to simulate a mobile user). [1]
This page provides a full timeline of web search engines, starting from the WHOis in 1982, the Archie search engine in 1990, and subsequent developments in the field. It is complementary to the history of web search engines page that provides more qualitative detail on the history.
In December 1993, the first crawler-based web search engine, JumpStation, was launched. As there were fewer websites available on the web, search engines at that time used to rely on human administrators to collect and format links.
Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites have a search facility for online databases .
Alexa's operations grew to include the archiving of web pages as they are "crawled" and examined by an automated computer program (nicknamed a "bot" or "web crawler"). [11] [12] This database served as the basis for the creation of the Internet Archive, accessible through the Wayback Machine. [13] In 1998, the company donated a copy of the archive, two terabytes in size, to the Library of ...