List of search engines

This is a list of search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites that have a search facility for online databases. For a list of search engine software, see List of enterprise search vendors.

By content/topic

General
NameLanguageAlexa global ranking
AOL Search*Multilingual318 †[1]
Ask.com**Multilingual173[2]
BaiduChinese4[3]
BingMultilingual47[4]
Dogpile***English10,603[5]
DuckDuckGo*Multilingual214[6]
Ecosia*Multilingual700[7]
ExaleadMultilingual116,560[8]
Excite*Multilingual15,098 †[9]
GigablastEnglish135,070[10]
GoogleMultilingual1[11]
HotBot*English298,374[12]
LycosMultilingual36,396[13]
MetaCrawler***English19,168[14]
MojeekMultilingual148,996[15]
Qwant*Multilingual2,158[16]
Searx***Multilingual93,323[17]
SogouChinese162[18]
SosoChinese96[19]
Startpage.com**English1,946[20]
Swisscows*Multilingual232,931[21]
WebCrawler*English4,264[22]
Yahoo!*Multilingual7 †[23]
YandexMultilingual1,060
Yippy***English137,607[24]
YoudaoChinese260[25]

* Powered by Bing

** Powered by Google

*** Metasearch engine

† Main website is a portal

Based on
Based on Ask.com (formerly)
Based on Bing
Based on Google
  • AOL Search, until 2015
  • BOL
  • Groovle
  • MySpace Search
  • Mystery Seeker
  • Netscape
  • Ripple
  • Startpage.com
Based on Yahoo!
  • Ecocho
  • Forestle (an ecologically motivated site supporting sustainable rain forests – formerly based on Google)
  • Rectifi

Mobile/handheld
  • Taganode Local Search Engine
  • Taptu: taptu mobile/social search

Geographically limited scope
NameLanguageCountry
AccoonaChinese, EnglishChina, United States
BiglobeJapaneseJapan
DaumKorean Korea
EgerinKurdishKurdistan
FireballGerman, EnglishGermany
GooJapaneseJapan
Leit.isIceland
MaktoobArab World
Miner.huHungary
Najdi.siSlovenia
NaverKoreanKorea
PipilikaBangladesh
RamblerRussia
RediffIndia
SAPOPortugal, Angola, Cape Verde, Mozambique
Search.chSwitzerland
SesamNorway, Sweden
SeznamCzech Republic
Walla!Israel
YandexRussia, Turkey, Ukraine, Belarus, Kazakhstan
ZipLocalCanada, United States

Accountancy
  • IFACnet

Business

Computers
  • Shodan (website)

Dark Web
  • Ahmia
  • Grams
  • TorSearch

Education

General:

  • Chegg
  • SkilledUp

Academic materials only:

Enterprise
  • Apache Solr
  • Funnelback: Funnelback Search
  • Jumper 2.0: Universal search powered by Enterprise bookmarking
  • Oracle Corporation: Secure Enterprise Search 10g
  • Q-Sensei: Q-Sensei Enterprise
  • SimilarWeb[26]
  • Swiftype: Swiftype Search
  • TeraText: TeraText Suite

Events
  • Tickex (US, UK)
  • TickX (UK, Ireland, Spain, Netherlands)

Food/recipes
  • RecipeBridge: vertical search engine for recipes
  • Yummly: semantic recipe search

Genealogy
  • Mocavo.com: family history search engine

Job
  • Adzuna (UK)
  • CareerBuilder (USA)
  • Craigslist (by city)
  • Dice.com (USA)
  • Glassdoor (USA)
  • Indeed (USA)
  • JobStreet.com (Southeast Asia, Japan and India)
  • Monster.com (USA), (India)
  • Naukri.com (India)
  • Rozee.pk (Pakistan)
  • Yahoo! HotJobs (Countrywise subdomains, International)

Medical
  • Bing Health
  • Bioinformatic Harvester
  • CiteAb (antibody search engine for medical researchers)
  • EB-eye EMBL-EBI's Search engine
  • Entrez (includes Pubmed)
  • GenieKnows
  • Healia
  • Healthline
  • Nextbio (Life Science Search Engine)
  • PubGene
  • Quertle (Semantic search of the biomedical literature)
  • Searchmedica
  • WebMD

News

People
  • FindFace
  • PeekYou
  • Spokeo
  • Zabasearch.com
  • ZoomInfo

Real estate/property
  • HotPads.com
  • Realtor.com
  • Redfin
  • Rightmove
  • StuRents.com
  • Trulia
  • Zillow
  • Zoopla

Television
  • TV Genius

Video games
  • Wazap

By data type

Search engines dedicated to a specific kind of information

Maps

Multimedia
  • Bing Videos
  • blinkx
  • FindSounds
  • Google Video
  • Munax's PlayAudioVideo
  • Picsearch
  • Pixsta
  • Podscope
  • SeeqPod
  • Songza
  • Tencent Video
  • TinEye
  • TV Genius
  • Veveo
  • Yahoo! Video

Price
  • Bing Shopping
  • Google Shopping (formerly Google Product Search and Froogle[27])
  • Kelkoo
  • MySimon
  • PriceGrabber
  • PriceRunner
  • PriceSCAN
  • Pronto.com
  • Shopping.com
  • Shopzilla
  • SwoopThat.com
  • TheFind.com
  • TickX

Source code
  • Google Code Search
  • Koders
  • Krugle

BitTorrent

These search engines work across the BitTorrent protocol.

Blog
  • Amatomu
  • Bloglines
  • IceRocket
  • Munax
  • Regator
  • Technorati

Email
  • TEK

Forum
  • Omgili

Question and answer

Human answers

Automatic answers
  • AskMeNow
  • BrainBoost
  • True Knowledge
  • Wolfram Alpha

By model

Search appliances
  • Fabasoft
  • Google Search Appliance - discontinued
  • Munax
  • Searchdaimon
  • Thunderstone

Desktop search engines

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

Name Platform Remarks License
Autonomy Windows IDOL Enterprise Desktop Search, HP Autonomy Universal Search.[28] Proprietary, commercial
Beagle Linux Open source desktop search tool for Linux based on Lucene. Unmaintained since 2009. A mix of the X11/MIT License and the Apache License
Copernic Desktop Search Windows Major desktop search program. The full trial version downgrades after the trial period automatically to the free version, which is (anno 2018) limited to indexing a maximum of 10.000 files. Proprietary (30 day trial)
DocFetcher Cross-platform Open source desktop search tool for Windows and Linux, based on Apache Lucene Eclipse Public License
dtSearch Desktop Windows Proprietary (30 day trial)
Everything Windows Find files and folders by name instantly on NTFS volumes Freeware
GNOME Storage Linux Open Source desktop search tool for Unix/Linux GPL
Google Desktop Linux, Mac OS X, Windows Integrates with the main Google search engine page. 5.9 Release now supports x64 systems. As of September 14, 2011, Google has discontinued this product. Freeware
ISYS Search Software Windows ISYS:desktop search software. Proprietary (14-day trial)
Locate32 Windows Graphical port of Unix's locate & updatedb BSD License[29]
Lookeen Windows Desktop search product with Outlook plugin and limited support for other formats via IFilters, uses Lucene search engine. Proprietary (14-day trial)[30]
Nepomuk Linux Open Source semantic desktop search tool for Linux. Has been replaced by Baloo in KDE Applications from release 4.13 onward. License SA 3.0 and the GNU Free Documentation License 1.2
Recoll Linux, Unix, Windows, macOS Open Source desktop search tool for Unix/Linux GPL [31]
Spotlight macOS Found in Apple Mac OS X "Tiger" and later OS X releases. Proprietary
Strigi Linux, Unix, Solaris, Mac OS X and Windows Cross-platform open source desktop search engine LGPL v2 [32]
Terrier Search Engine Linux, Mac OS X, Unix Desktop search for Windows, Mac OS X (Tiger), Unix/Linux. MPL v1.1[33]
Tracker Linux, Unix Open source desktop search tool for Unix/Linux GPL v2 [34]
Tropes Zoom Windows Semantic Search Engine (no longer available)[35] Freeware and commercial
Unity Dash Linux Part of Ubuntu Desktop GPL v3[36], LGPL v2.1[37]
Windows Search Windows Part of Windows Vista and later OSs. Available as Windows Desktop Search for Windows XP and Server 2003. Does not support indexing UNC paths on x64 systems. Proprietary
X1 Desktop Search Windows Major desktop search product along with Copernic Desktop Search. Proprietary (14-day trial)[38]

Kids' safe search engines
  • Kiddle
  • KidRex
  • KidzSearch

Metasearch engines
NameLanguage
DogpileEnglish
ExciteEnglish
Info.comEnglish
Kayak.comMultilingual
Mamma.com
MetacrawlerEnglish
MobissimoMultilingual
Otalo.comEnglish
Publisher's clearinghouse Search and Win
SearxMultilingual
SkyscannerMultilingual
Yippy (formerly Clusty)English

Natural language
  • Ask.com
  • Bing (Semantic ability is powered by Powerset)
  • Lexxe

Open source search engines
  • ht://Dig
  • Isearch
  • Lemur Toolkit & Indri Search Engine
  • Lucene
  • mnoGoSearch
  • Nutch
  • Recoll
  • Searchdaimon
  • Searx
  • Seeks
  • Sphinx
  • SWISH-E
  • Terrier Search Engine
  • Xapian
  • YaCy
  • Zettair

Web search engine
  • Gigablast
  • Grub
  • Apache Solr
  • Elasticsearch[39]

P2P search engines
NameLanguage
FAROOEnglish
Seeks (open source)English
YaCy (free and fully decentralized)Multilingual

Privacy search engines
  • DuckDuckGo
  • HotBot
  • MetaGer
  • Mojeek
  • Qwant
  • Searx
  • Startpage.com
  • Swisscows

Social and environmental focus
  • Ecosia

Semantic browsing engines
NameDescriptionSpeciality
EviSpecialises in knowledge base and semantic searchanswer engine
SwoogleSearching over 10,000 ontologiesSemantic web documents
Yeboldefunct
YummlySemantic web search for food, cooking and recipesfood related

Social search engines
  • ChaCha Search
  • Delver
  • Eurekster
  • Facebook Search
  • Mahalo.com
  • Rollyo
  • SearchTeam
  • Sproose
  • Trexy

Usenet

Visual search engines
  • FindFace
  • Grokker
  • Macroglossa
  • Pixsta
  • TinEye
  • Viewzi

By popularity

Defunct or acquired search engines
  • AlltheWeb (acquired by Yahoo!)
  • AltaVista (acquired by Yahoo! in 2003, shut down in 2013)
  • Bixee.com (India) (acquired by Ibibo)
  • Blekko (acquired by IBM in 2015 for its use for Watson-based products)[40]
  • BlogScope (acquired by Marketwire)
  • Brainboost (public engine no longer exists, acquired by Answers, Inc.)
  • BRS/Search (now OpenText Livelink ECM Discovery Server)
  • Btjunkie
  • Cuil (public engine no longer exists, acquired by Google Inc)
  • DeepPeep
  • Direct Hit Technologies (acquired by Ask Jeeves in January, 2000)
  • Getit Infoservices Private Limited
  • Google Answers
  • GoPubMed (knowledge-based: GO – GeneOntology and MeSH – Medical Subject Headings) (engine no longer exists)
  • hakia (no longer exists)
  • IBM STAIRS
  • Infoseek (acquired by The Walt Disney Company)
  • Inktomi
  • Kartoo
  • LeapFish (public engine no longer exists)
  • Lotus Magellan
  • MetaLib (public engine no longer exists)
  • mozDex (no longer exists)
  • Munax (no longer exists)
  • Myriad Search (no longer exists)
  • Overture.com (formerly GoTo.com, now Yahoo! Search Marketing)
  • PubSub
  • RetrievalWare (acquired by Fast Search & Transfer and now owned by Microsoft)
  • Scroogle (Google Scraper)
  • Singingfish (acquired by AOL)
  • Speechbot
  • Sphere (acquired by AOL)
  • Tafiti (replaced by Microsoft Bing)
  • Volunia[41]
  • Wikia Search (defunct)
  • WiseNut
  • World Wide Web Worm

See also
  • List of academic databases and search engines
  • List of web directories
  • Search aggregator
  • Search engine optimization
  • Category:Search engine software

References
  1. "Aol.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  2. "Ask.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  3. "Baidu.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  4. "Bing.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  5. "Dogpile.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  6. "Duckduckgo.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  7. "Ecosia.org Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  8. "Exalead.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  9. "Excite.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  10. "Gigablast.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  11. "Google.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  12. "Hotbot.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  13. "Lycos.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  14. "Metacrawler.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  15. "Mojeek.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  16. "Qwant.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  17. "Searx.me Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  18. "Sogou.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  19. "Soso.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  20. "Startpage.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  21. "Swisscows.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  22. "Webcrawler.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  23. "Yahoo.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  24. "Yippy.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  25. "Youdao.com Traffic, Demographics and Competitors - Alexa". www.alexa.com. Retrieved 2018-12-28.
  26. "SimilarWeb". SimilarWeb. Retrieved 20 February 2015.
  27. Sullivan, Danny (April 18, 2007). "Goodbye Froogle, Hello Google Product Search!". Search Engine Land. Retrieved 3 June 2018.
  28. "HP Universal Search". Retrieved 2014-07-01.
  29. According to http://www.softpedia.com/get/Internet/Servers/Database-Utils/Locate32.shtml
  30. "Lookeen 10". Lookeen. Retrieved 2016-02-03.
  31. According to Recoll
  32. According to COPYING in version 0.5.10 tar.bz2 package.
  33. "Terrier License". GitHub.
  34. According to COPYING Archived 2012-07-14 at Archive.today in SVN trunk.
  35. According to http://www.semantic-knowledge.com/download.htm. Retrieved 15 August 2015.
  36. "Unity on GitHub". GitHub.
  37. "Required License Files". GitHub.
  38. "X1 Search 8". X1 Technologies. Retrieved 12 July 2014.
  39. Darrow, Barb (October 13, 2017). "Alibaba Is Adding This Key Technology to Its Growing Cloud". Fortune. Retrieved August 21, 2018.
  40. "Data, Data, Everywhere Data. Now a Better Way to Understand It". 27 March 2015.
  41. According to domain liquidation notice at http://blog.mrwebmaster.it/2014/04/11/il-dominio-volunia-it-e-in-vendita.html (Italian)
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