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Search engines, including
web search engine A search engine is a software system designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a ...
s, selection-based search engines,
metasearch engine A metasearch engine (or search aggregator) is an online information retrieval tool that uses the data of a web search engine to produce its own results. Metasearch engines take input from a user and immediately query search engines for results. S ...
s, desktop search tools, and
web portal A web portal is a specially designed website that brings information from diverse sources, like emails, online forums and search engines, together in a uniform way. Usually, each information source gets its dedicated area on the page for displayi ...
s and
vertical market A vertical market is a market in which vendors offer goods and services ''specific'' to an industry, trade, profession, or other group of customers with specialized needs. A horizontal market is a market in which a product or service meets a ...
websites have a search facility for
online database An online database is a database accessible from a local network or the Internet, as opposed to one that is stored locally on an individual computer or its attached storage (such as a CD). Online databases are hosted on websites, made available as ...
s.


By content/topic


General

Main website is a portal


Geographically localized


Accountancy

*
IFACnet {{Short description, Worldwide accountancy search engine IFACnet, the KnowledgeNet for Professional Accountants, was the global, multilingual search engine developed by the International Federation of Accountants (IFAC) and its members to provide p ...


Business

* Business.com * GenieKnows (United States and
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by to ...
) * GlobalSpec * Nexis (Lexis Nexis) * Thomasnet (
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
)


Computers

* Shodan (website)


Content

* Openverse, search engine for open content.


Dark web

*
Ahmia Ahmia is a clearnet search engine for Tor's hidden services created by Juha Nurmi. Overview Developed during the 2014 Google Summer of Code with support from the Tor Project, the open source search engine was initially built in Django and ...
* Grams * TorSearch


Education

General: * Chegg * SkilledUp Academic materials only: * BASE (search engine) * ChemRefer *
CiteULike CiteULike was a web service which allowed users to save and share citations to academic papers. Based on the principle of social bookmarking, the site worked to promote and to develop the sharing of scientific references amongst researchers. In ...
*
Google Scholar Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes ...
*
Library of Congress The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the ''de facto'' national library of the United States. It is the oldest federal cultural institution in the country. The libra ...
*
Semantic Scholar Semantic Scholar is an artificial intelligence–powered research tool for scientific literature developed at the Allen Institute for AI and publicly released in November 2015. It uses advances in natural language processing to provide summaries ...


Enterprise

*
Apache Solr Solr (pronounced "solar") is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features a ...
* Jumper 2.0: Universal search powered by
Enterprise bookmarking Enterprise bookmarking is a method for Web 2.0 users to tag, organize, store, and search bookmarks of both web pages on the Internet and data resources stored in a distributed database or fileserver. This is done collectively and collaborativel ...
*
Oracle Corporation Oracle Corporation is an American multinational computer technology corporation headquartered in Austin, Texas. In 2020, Oracle was the third-largest software company in the world by revenue and market capitalization. The company sells da ...
: Secure Enterprise Search 10g * Q-Sensei: Q-Sensei Enterprise * Swiftype: Swiftype Search *
TeraText TeraText is a non- relational text database. It is used to store and search through large amounts of textual data. It was originally developed at Royal Melbourne Institute of Technology. TeraText operation utilises a heavy client server model ...
: TeraText Suite


Events

* Tickex (US, UK) * TickX (UK, Ireland, Spain, Netherlands)


Food and recipes

* RecipeBridge: vertical search engine for
recipe A recipe is a set of instructions that describes how to prepare or make something, especially a dish of prepared food. A sub-recipe or subrecipe is a recipe for an ingredient that will be called for in the instructions for the main recipe. His ...
s * Yummly: semantic recipe search


Genealogy

* Mocavo.com: family history search engine


Job

* Adzuna (UK) * CareerBuilder (USA) *
Craigslist Craigslist (stylized as craigslist) is an American classified advertisements website with sections devoted to jobs, housing, for sale, items wanted, services, community service, gigs, résumés, and discussion forums. Craig Newmark began the ...
(by city) *
Dice.com Dice.com is a career website based in New York City with primary sales and development operations in Urbandale, Iowa and Denver. It serves information technology and engineering professionals, as well as contract and permanent engineering sta ...
(USA) * Glassdoor (USA) *
Indeed Indeed is an American worldwide employment website for job listings launched in November 2004. It is an independent subsidiary of multinational holding Recruit Co. Ltd. It is co-headquartered in Austin, Texas, and Stamford, Connecticut, with ...
(USA) * JobStreet.com (
Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland ...
, Japan, India) * Monster.com (USA), (India) * Naukri.com (India) * Rozee.pk (Pakistan) * Yahoo! HotJobs (Countrywise subdomains, International)


Legal

*
Google Scholar Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes ...
* Lexis (Lexis Nexis) * Quicklaw *
WestLaw Westlaw is an online legal research service and proprietary database for lawyers and legal professionals available in over 60 countries. Information resources on Westlaw include more than 40,000 databases of case law, state and federal statu ...


Medical

* Bing Health *
Bioinformatic Harvester The Bioinformatic Harvester was a bioinformatic meta search engine created by the European Molecular Biology Laboratory and subsequently hosted and further developed by KIT Karlsruhe Institute of Technology for genes and protein-associated informa ...
* CiteAb (antibody search engine for medical researchers) * EB-eye EMBL-EBI's Search engine * Entrez (includes
PubMed PubMed is a free search engine accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintai ...
) * GenieKnows * Healia *
Healthline Healthline Media, Inc. is an American website and provider of health information headquartered in San Francisco, California. It was founded in 1999, relaunched in 2006, and established as a standalone entity in January 2016. Accuracy There ar ...
* Nextbio (Life Science Search Engine) * PubGene *
Searchmedica SearchMedica was a series of free medical search engines built by doctors for doctors and other medical professionals, with localized versions for the United Kingdom, the United States, France and Spain. Description SearchMedica was a spec ...
*
WebMD WebMD is an American corporation known primarily as an online publisher of news and information pertaining to human health and well-being. The site includes information pertaining to drugs. It is one of the top healthcare websites. It was fou ...


Mobile/handheld

* Taganode Local Search Engine (now defunct) *
Taptu Taptu was a social media and technology company that built platforms, tools and applications that enabled content on touch screen mobile devices, including phones running iOS and Android. Taptu was a privately held company that was founded in C ...
: taptu mobile/social search (now defunct)


News

*
Bing News Microsoft Bing (commonly known as Bing) is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety ...
*
Google News Google News is a news aggregator service developed by Google. It presents a continuous flow of links to articles organized from thousands of publishers and magazines. Google News is available as an app on Android, iOS, and the Web. Google re ...
* Newslookup * Nexis (Lexis Nexis) *
Yahoo! News Yahoo! News is a news website that originated as an internet-based news aggregator by Yahoo!. The site was created by a Yahoo! software engineer named Brad Clawsie in August 1996. Articles originally came from news services such as the Associate ...


People

* FindFace * PeekYou *
Spokeo Spokeo is a people search website that aggregates data from online and offline sources. History Spokeo was founded in 2006 by four graduates from Stanford University—Mike Daly, Harrison Tang, Ray Chen, and Eric Liang. The original idea of aggr ...
* Zabasearch.com * ZoomInfo


Real estate/property

* HotPads.com *
Realtor.com Realtor.com is a real estate listings website operated by the News Corp subsidiary Move, Inc. and based in Santa Clara, California. It is the second most visited real estate listings website in the United States as of 2021, with over 100 million ...
* Redfin *
Rightmove Rightmove plc is a UK-based company which runs rightmove.co.uk, the UK's largest online real estate property portal A web portal is a specially designed website that brings information from diverse sources, like emails, online forums and searc ...
* StuRents.com *
Trulia Trulia is an American online real estate marketplace which is a subsidiary of Zillow. It facilitates buyers and renters to find homes and neighborhoods across the United States through recommendations, local insights, and map overlays that offer ...
*
Zillow Zillow Group, Inc., or simply Zillow, is an American tech real-estate marketplace company that was founded in 2006, and was created by Rich Barton and Lloyd Frink, former Microsoft executives and founders of Microsoft spin-off Expedia; Spencer ...
*
Zoopla ZPG Ltd. is a British real estate company based in London, England, owned by Silver Lake Partners. Its brands include the property website Zoopla, price comparison service Uswitch, finance comparison website Money.co.uk, personal finance content ...


Television

*
TV Genius TV Genius is a United Kingdom-based software company that specialize in TV search engines, TV recommendation engines, and EPG development. It was acquired by Red Bee Media in August 2011, and by Ericsson in July 2013. TV Genius became an inte ...


Video games

* Wazap


By data type

Search engines dedicated to a specific kind of information


Maps

*
Bing Maps Bing Maps (previously Live Search Maps, Windows Live Maps, Windows Live Local, and MSN Virtual Earth) is a web mapping service provided as a part of Microsoft's Bing (search engine), Bing suite of search engines and powered by the Bing Maps for En ...
* Géoportail *
Google Maps Google Maps is a web mapping platform and consumer application offered by Google. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets (Street View), real-time traffic conditions, and rou ...
* MapQuest * Nokia Maps *
OpenStreetMap OpenStreetMap (OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial imagery and also import from other freely licensed g ...
* Petal Maps *
Tencent Maps Tencent Maps is a desktop and web mapping service application and technology provided by Tencent, offering satellite imagery, street maps, street view and historical view perspectives, as well as functions such as a route planner for traveling ...
*
Wikiloc Wikiloc is a premium website, launched in 2006,About Wikiloc
(Wikiloc)
containing
WikiMapia Wikimapia is a geographic online encyclopedia project. The project implements an interactive "clickable" web map that utilizes Google Maps with a geographically-referenced wiki system, with the aim to mark and describe all geographical object ...
*
Yahoo! Maps Yahoo! Maps was a free online mapping portal provided by Yahoo! Functionality included local weather powered by The Weather Channel, printing maps, and local reviews powered by Yelp. It shut down on June 30, 2015. For a time in 2019, Yahoo! Maps ...
*
Yandex Maps Yandex Maps ( rus, Яндекс Карты, r=Yandeks Karty) is a Russian web mapping service developed by Yandex. The service provides detailed maps of the whole world, it provides directions and estimated times of arrival for driving, walking ...


Multimedia

*
Bing Videos Bing Videos (previously MSN Video and Live Search Video) is a video search service and part of Microsoft's Bing search engine. The service enables users to search and view videos across various websites. Bing Videos was officially released on Sep ...
* blinkx * FindSounds *
Google Video Google Video was a free video hosting service launched by the multinational technology company Google on January 25, 2005. Similar to YouTube, this platform allowed video clips to be hosted on Google servers and embedded on to other website ...
*
Munax Munax was a Swedish company that developed a Large Hyper-Parallel Execution (LHPE) search engine system Munax XE. Munax XE, is an all-content search engine and powered nationwide and worldwide public search engines with page, document, audio, vid ...
's PlayAudioVideo * Openverse, search engine for open content. * Picsearch * Pixsta * Podscope * SeeqPod * Songza * Tencent Video * TinEye *
TV Genius TV Genius is a United Kingdom-based software company that specialize in TV search engines, TV recommendation engines, and EPG development. It was acquired by Red Bee Media in August 2011, and by Ericsson in July 2013. TV Genius became an inte ...
* Veveo *
Yahoo! Video The company Yahoo! ran several similar video services. Yahoo! Video, a video hosting service, was established in 2006. Later, the ability to upload videos was removed, changing it to a more pure video on demand service; the website became a port ...


Price

*
Bing Shopping Bing Shopping (formerly MSN Shopping, Windows Live Shopping, Live Search Products and Windows Live Product Search) is a products search and discovery service that helps save time by bringing products from multiple sellers together on a single websi ...
* Google Shopping (formerly Google Product Search and Froogle) * Kelkoo *
MySimon Simon & Schuster () is an American publishing company and a subsidiary of Paramount Global. It was founded in New York City on January 2, 1924 by Richard L. Simon and M. Lincoln Schuster. As of 2016, Simon & Schuster was the third largest pub ...
*
PriceGrabber PriceGrabber.com is a price-comparison shopping site and distributed content commerce service founded in 1999 by former CEOs Kamran Pourzanjani and Tamim Mourad. The company partners with merchants, retailers, and sellers to provide information o ...
* PriceRunner * Pronto.com *
Shopping.com Shopping.com is a price comparison service owned by eBay and operates websites in USA, United Kingdom, France, Germany and Australia. Shopping.com started out with the name DealTime.com which still operates as a related, but otherwise separate ...
*
Shopzilla Connexity (formally Connexity Inc.) is a privately held Los Angeles operator of shopping web sites, including Shopzilla.com. Originally started as comparison shopping website Bizrate.com, the company changed its name to Shopzilla in 2004, and c ...
* TickX


Source code

* codeseek.com *
Google Code Search Google Code Search was a free beta product from Google which debuted in Google Labs on October 5, 2006, allowing web users to search for open-source code on the Internet. Features included the ability to search using operators, namely , , , a ...
*
Koders Koders was a search engine for open source code. It enabled software developers to easily search and browse source code in thousands of projects posted at hundreds of open source repositories. On April 28, 2008, it was announced that Black Duck ...
* Krugle


BitTorrent

These search engines work across the BitTorrent protocol. * BTDigg * Isohunt * Mininova *
The Pirate Bay The Pirate Bay (sometimes abbreviated as TPB) is an online index of digital content of entertainment media and software. Founded in 2003 by Swedish think tank Piratbyrån, The Pirate Bay allows visitors to search, download, and contribute ...
* TorrentSpy *
Torrentz Torrentz was a Finland-based metasearch engine for BitTorrent, run by an individual known as Flippy, and founded on 24 July 2003. It indexed torrents from various major torrent websites, and offered compilations of various trackers per torrent ...


Blog

* Amatomu *
Bloglines Bloglines was a web-based news aggregator for reading syndicated feeds using the RSS and Atom formats. Users could subscribe to the syndicated feeds for free using a web browser. Bloglines offered an application programming interface that maint ...
*
IceRocket IceRocket was an Internet search engine which specialized in real-time search. Based in Dallas, Texas, it launched in 2004 hoping to market itself solely through word of mouth. IceRocket was backed by Mark Cuban and headquartered in Dallas, Texas. ...
*
Munax Munax was a Swedish company that developed a Large Hyper-Parallel Execution (LHPE) search engine system Munax XE. Munax XE, is an all-content search engine and powered nationwide and worldwide public search engines with page, document, audio, vid ...
* Regator * Technorati


Email

* TEK


Forum

* Omgili


Question and answer


Human answers

* Answers.com * eHow *
Quora Quora () is a social question-and-answer website based in Mountain View, California. It was founded on June 25, 2009, and made available to the public on June 21, 2010. Users can collaborate by editing questions and commenting on answers that ...
* Stack Overflow/
Stack Exchange Network Stack Exchange is a network of question-and-answer (Q&A) websites on topics in diverse fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The reputation system allows th ...
*
Uclue Uclue was an online fee-based research service that operated between February 28, 2007 and December 15 2017. At one time, Uclue employed researchers in North America, South America, Europe, Australia, Japan, and the Philippines. Uclue was able ...
*
wikiHow wikiHow is an online wiki-style publication featuring how-to articles on a variety of topics. Founded in 2005 by Internet entrepreneur Jack Herrick, its aim is to create an extensive database of instructional content, using the wiki model of ope ...
*
Yahoo! Answers Yahoo! Answers was a community-driven question-and-answer (Q&A) website or knowledge market owned by Yahoo! where users would ask questions and answer those submitted by others, and upvote them to increase their visibility. Questions were org ...


Automatic answers

* AskMeNow *
Wolfram Alpha WolframAlpha ( ) is an answer engine developed by Wolfram Research. It answers factual queries by computing answers from externally sourced data. WolframAlpha was released on May 18, 2009 and is based on Wolfram's earlier product Wolfram Mat ...


By model


Search appliances

* Fabasoft * Google Search Appliance - discontinued *
Munax Munax was a Swedish company that developed a Large Hyper-Parallel Execution (LHPE) search engine system Munax XE. Munax XE, is an all-content search engine and powered nationwide and worldwide public search engines with page, document, audio, vid ...
* Searchdaimon * Thunderstone


Desktop search engines

Desktop search engines listed on a light purple background are no longer in active development.


Child-safe search engines

* Kiddle * KidRex * KidzSearch


Metasearch engines


Natural language

* Ask.com *
Bing Bing most often refers to: * Bing Crosby (1903–1977), American singer * Microsoft Bing, a web search engine Bing may also refer to: Food and drink * Bing (bread), a Chinese flatbread * Bing (soft drink), a UK brand * Bing cherry, a varie ...
(Semantic ability is powered by Powerset) * Lexxe


Open-source search engines

* ht://Dig *
Isearch Isearch is open-source text retrieval software first developed in 1994 by Nassib Nassar as part of the Isite Z39.50 information framework. The project started at the Clearinghouse for Networked Information Discovery and Retrieval (CNIDR) of the ...
* Lemur Toolkit & Indri Search Engine *
Lucene Apache Lucene is a free and open-source search engine software library, originally written in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License. Lucene is widely used as ...
* mnoGoSearch *
Nutch Apache Nutch is a highly extensible and scalable open source web crawler software project. Features Nutch is coded entirely in the Java programming language, but data is written in language-independent formats. It has a highly modular architec ...
* Openverse * Recoll * Searchdaimon * Searx *
Seeks Seeks is a free and open-source project licensed under the GNU Affero General Public License version 3 (AGPL-3.0-or-later). It exists to create an alternative to the current market-leading search engines, driven by user concerns rather than corp ...
*
Sphinx A sphinx ( , grc, σφίγξ , Boeotian: , plural sphinxes or sphinges) is a mythical creature with the head of a human, the body of a lion, and the wings of a falcon. In Greek tradition, the sphinx has the head of a woman, the haunches of ...
* SWISH-E *
Terrier Search Engine The Terrier IR Platform is a modular open source software for the rapid development of large-scale information retrieval applications. Terrier was developed by members of thInformation Retrieval Research Group Department of Computing Science, at th ...
*
Xapian Xapian is a free and open-source probabilistic information retrieval library, released under the GNU General Public License (GPL). It is a full-text search engine library for programmers. It is written in C++, with bindings to allow use from P ...
* YaCy * Zettair


Web search engine

* Gigablast * Grub * Wiby


Enterprise search

*
Apache Solr Solr (pronounced "solar") is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features a ...
*
Elasticsearch Elasticsearch is a search engine based on the Lucene library. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java and is dual ...


P2P search engines


Privacy search engines

*
DuckDuckGo DuckDuckGo (DDG) is an internet search engine that emphasizes protecting searchers' privacy and avoiding the filter bubble of personalized search results. DuckDuckGo does not show search results from content farms. It uses various APIs o ...
* HotBot *
MetaGer MetaGer is a metasearch engine focused on protecting users' privacy. Based in Germany, and hosted as a cooperation between the German NGO 'SUMA-EV - Association for Free Access to Knowledge' and the University of Hannover, the system is built on ...
* Mojeek * Qwant * Searx * Swisscows * You.com


Social and environmental focus

* Ecosia


Semantic browsing engines


Social search engines

* ChaCha Search * Delver * Eurekster *
Facebook Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dust ...
Search *
Mahalo.com Mahalo.com was a web directory (or human search engine) and Internet-based knowledge exchange ( Question-and-answer website) launched in May 2007 by Jason Calacanis. It differentiated itself from algorithmic search engines like Google and Ask.co ...
* Rollyo * Sproose * Trexy


Usenet

*
Google Groups Google Groups is a service from Google that provides discussion groups for people sharing common interests. The Groups service also provides a gateway to Usenet newsgroups via a shared user interface. Google Groups became operational in Febru ...
(formerly Deja News)


Visual search engines

* FindFace * Grokker * Macroglossa * Pixsta * TinEye * Viewzi


By popularity


Defunct or acquired search engines

* AlltheWeb (acquired by
Yahoo! Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Mana ...
) * AltaVista (acquired by
Yahoo! Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Mana ...
in 2003, shut down in 2013) * Bixee.com (India) (acquired by Ibibo) * Blekko (acquired by IBM in 2015 for its use for
Watson Watson may refer to: Companies * Actavis, a pharmaceutical company formerly known as Watson Pharmaceuticals * A.S. Watson Group, retail division of Hutchison Whampoa * Thomas J. Watson Research Center, IBM research center * Watson Systems, make ...
-based products) * BlogScope (acquired by Marketwire) *
BRS/Search BRS/Search is a full-text database and information retrieval system. BRS/Search uses a fully inverted indexing system to store, locate, and retrieve unstructured data. It was the search engine that in 1977 powered Bibliographic Retrieval Services ...
(now OpenText Livelink ECM Discovery Server) * Btjunkie * Cuil (patents acquired by
Google Google LLC () is an American Multinational corporation, multinational technology company focusing on Search Engine, search engine technology, online advertising, cloud computing, software, computer software, quantum computing, e-commerce, ar ...
after shutdown) * DeepPeep * Direct Hit Technologies (acquired by Ask Jeeves in January, 2000) * FedWorld Information Network (, a web and
telnet Telnet is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control i ...
search engine and FTP site specialized to searching for and within
United States federal government The federal government of the United States (U.S. federal government or U.S. government) is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a fed ...
documents, established in 1992 by the National Technical Information Service () and shut down in 2013) * Getit Infoservices Private Limited *
Google Answers Google Answers was an online knowledge market offered by Google, online from 2002 to 2006. History Google Answers' predecessor was Google Questions and Answers, which was launched in June 2001. This service involved Google staffers answering ...
*
GoPubMed GoPubMed was a knowledge-based search engine for biomedical texts. The Gene Ontology (GO) and Medical Subject Headings (MeSH) served as "Table of contents" in order to structure the millions of articles in the MEDLINE database. MeshPubMed was at on ...
*
hakia hakia was an Internet search engine. Launched in March 2004 and based in New York City, hakia attempted to pioneer a semantic search engine in contrast to keyword search engines that were established at that time. The search engine ceased opera ...
*
IBM STAIRS The IBM Storage and Information Retrieval System, better known by the acronym STAIRS, was a program providing storage and online Full-text search, free-text search of text data. STAIRS ran under the OS/360 and successors, OS/360 operating system ...
*
Infoseek Infoseek (also known as the "big yellow") was an American internet search engine founded in 1994 by Steve Kirsch. Infoseek was originally operated by the Infoseek Corporation, headquartered in Sunnyvale, California. Infoseek was bought by The Wa ...
(acquired by
Disney The Walt Disney Company, commonly known as Disney (), is an American multinational mass media and entertainment conglomerate headquartered at the Walt Disney Studios complex in Burbank, California. Disney was originally founded on October ...
) *
Inktomi Inktomi Corporation was a company that provided software for Internet service providers (ISPs). It was incorporated in Delaware and headquartered in Foster City, California, United States. Customers included Microsoft, HotBot, Amazon.com, e ...
* Ixquick (merged into Startpage) * Jubii * Kartoo * LeapFish * Lotus Magellan * MetaLib * mozDex *
Munax Munax was a Swedish company that developed a Large Hyper-Parallel Execution (LHPE) search engine system Munax XE. Munax XE, is an all-content search engine and powered nationwide and worldwide public search engines with page, document, audio, vid ...
* Myriad Search * Overture.com (formerly GoTo.com, now
Yahoo! Search Marketing Yahoo! Native (formerly known as Yahoo! Advertising, Yahoo! Search Marketing and Yahoo! Gemini) is a native "Pay per click" Internet advertising service provided by Yahoo. Yahoo began offering this service after acquiring Overture Services, Inc. ...
) * PicoSearch efunct July 2014... * PubSub * RetrievalWare (acquired by
Fast Search & Transfer Microsoft Development Center Norway (known as Fast Search & Transfer ASA (FAST) before 2010) is a Norwegian company, founded in 1997 and based in Oslo. FAST focused on data search technologies. It had offices located in Germany, Italy, Sri Lank ...
and now owned by
Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washi ...
) * Scroogle (Google Scraper) * Singingfish (acquired by
AOL AOL (stylized as Aol., formerly a company known as AOL Inc. and originally known as America Online) is an American web portal and online service provider based in New York City. It is a brand marketed by the current incarnation of Yahoo! Inc. ...
) *
Soso Soso may refer to: * Boris Michel Soso (1917-2002), American actor and film producer better known as Brad Dexter * Soso, Mississippi, town in the United States * Soso (search engine) (搜搜) a Chinese search engine site owned by Tencent Holdings ...
* Speechbot *
Sphere A sphere () is a geometrical object that is a three-dimensional analogue to a two-dimensional circle. A sphere is the set of points that are all at the same distance from a given point in three-dimensional space.. That given point is the c ...
(acquired by
AOL AOL (stylized as Aol., formerly a company known as AOL Inc. and originally known as America Online) is an American web portal and online service provider based in New York City. It is a brand marketed by the current incarnation of Yahoo! Inc. ...
) * Startpage (acquired by System1, an advertising company) * Tafiti (replaced by
Microsoft Bing Microsoft Bing (commonly known as Bing) is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety ...
) *
Volunia ''Volunia'' was a web search engine (or social search engine) created by Massimo Marchiori. It was launched in beta only for registered ''power users'' on February 6, 2012 and went live on June 14, 2012. Volunia, dubbed as "the search engine o ...
* Wikia Search (defunct) *
WiseNut WiseNut was a crawler-based search engine that officially launched on September 5, 2001. Like Teoma, WiseNut automatically clustered search results, a technology called ''WiseGuide''. Despite being referred to as a "Google killer" and having a g ...
* World Wide Web Worm


See also

*
List of academic databases and search engines This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and ...
*
List of web directories A Web directory is a listing of Websites organized in a hierarchy or interconnected list of categories. The following is a list of notable Web directory services. General * DOAJ.org – Directory of Open Access Journals * DMOZ (also known as ...
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Search aggregator A search aggregator is a type of metasearch engine which gathers results from multiple search engines simultaneously, typically through RSS search results. It combines user specified search feeds (parameterized RSS feeds which return search resul ...
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Search engine optimization Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. SEO targets unpaid traffic (known as "natural" or "organic" results) rather than dire ...
* :Search engine software


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External links

* {{Web search engines
Search engines A search engine is a software system designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in ...