Short description: none

For a topical guide to this subject, see Outline of search engines. For comparison tables, see Comparison of web search engines.

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.

## Contents

* 1 By content/topic
* 1.1 General
* 1.2 Geographically localized
* 1.3 Accountancy
* 1.4 Business
* 1.5 Computers
* 1.6 Content
* 1.7 Dark web
* 1.8 Education
* 1.9 Enterprise
* 1.10 Events
* 1.11 Food and recipes
* 1.12 Genealogy
* 1.13 Job
* 1.14 Legal
* 1.15 Medical
* 1.16 Mobile/handheld
* 1.17 News
* 1.18 People
* 1.19 Real estate/property
* 1.20 Television
* 1.21 Video games
* 2 By data type
* 2.1 Maps
* 2.2 Multimedia
* 2.3 Price
* 2.4 Source code
* 2.5 BitTorrent
* 2.6 Blog
* 2.7 Email
* 2.8 Forum
* 2.9 Question and answer
* 2.9.1 Human answers
* 2.9.2 Automatic answers
* 3 By model
* 3.1 Search appliances
* 3.2 Desktop search engines
* 3.3 Child-safe search engines
* 3.4 Metasearch engines
* 3.5 Natural language
* 3.6 Open-source search engines
* 3.6.1 Web search engine
* 3.6.2 Enterprise search
* 3.7 P2P search engines
* 3.8 Privacy search engines
* 3.9 Social and environmental focus
* 3.10 Semantic browsing engines
* 3.11 Social search engines
* 3.12 Usenet
* 3.13 Visual search engines
* 4 By popularity
* 5 Defunct or acquired search engines
* 6 See also
* 7 References
* 8 External links

## By content/topic

### General

Name | Language  | Backend ownership

|
|

Ask.com | Multilingual  | Google
Baidu | Chinese | Baidu
Dogpile | English  | Metasearch engine
DuckDuckGo | Multilingual  | Microsoft Bing
Ecosia | Multilingual  | Microsoft Bing
Elasticsearch | Multilingual | Template:Background until 2021, then Elasticsearch
Exalead | Multilingual  | Cloudview
Excite† | Multilingual  | Microsoft Bing
Gigablast | English | Apache License 2.0
Google | Multilingual  | Google
HotBot | English  | Microsoft Bing
Lycos | Multilingual  | Microsoft Bing
MetaCrawler | English  | Metasearch engine
Microsoft Bing | Multilingual  | Microsoft Bing
Mojeek | Multilingual  | Mojeek
Opensearch | Multilingual | Apache License 2.0 (Elasticsearch fork)
Petal | Multilingual  | Huawei
Qwant | Multilingual  | Microsoft Bing
Searx | Multilingual  | Metasearch engine
Sogou | Multilingual  | Tencent
Startpage | English  | Google
Swisscows | Multilingual  | Microsoft Bing
WebCrawler | English  | Microsoft Bing
YaCy | Multilingual | GPL-2.0-or-later
Yahoo! Search† | Multilingual  | Microsoft Bing
Yandex | Multilingual  | Yandex
Youdao† | Chinese | NetEase
You.com | English  | Microsoft Bing
Brave Search | Multilingual  | Brave

† Main website is a portal

### Geographically localized

Name | Language | Country

|
|

Accoona | Chinese, English | China , United States
Biglobe | Japanese | Japan
Daum | Korean | Korea
Nate | Korean | Korea
Egerin | Kurdish | Kurdistan (Bing backend)
Fireball | German, English | Germany
Goo | Japanese | Japan
Leit.is | Icelandic, English | Iceland
Maktoob | Arabic, English | Arab World
Miner.hu | Hungarian | Hungary
Najdi.si | Slovenian | Slovenia
Naver | Korean | Korea
Parsijoo | Persian | Iran
Pipilika | Bengali, English | Bangladesh
Rambler | Russian | Russia
Rediff |  | India
SAPO | Portuguese | Portugal, Angola, Cape Verde, Mozambique
Search.ch |  | Switzerland
Sesam |  | Norway , Sweden
Seznam | Czech | Czech Republic
Walla! |  | Israel
Yahoo! Japan | Japanese | Japan (Google backend)
Yongzin | Tibetan | China
ZipLocal | English | Canada , United States
Qmamu | English, Hindi | India

### Accountancy

* IFACnet

### Business

* Business.com
* GenieKnows (United States and Canada )
* GlobalSpec
* Nexis (Lexis Nexis)
* Thomasnet (United States )

### Computers

* Shodan (website)

### Content

* Openverse, search engine for open content.

### Dark web

Main page: Dark web

* Ahmia
* Grams
* TorSearch

### Education

General:

* Chegg
* SkilledUp

Academic materials only:

* BASE (search engine)
* ChemRefer
* CiteULike
* Google Scholar
* Library of Congress
* Semantic Scholar

### Enterprise

* Apache Solr
* Jumper 2.0: Universal search powered by Enterprise bookmarking
* Oracle Corporation: Secure Enterprise Search 10g
* Q-Sensei: Q-Sensei Enterprise
* Swiftype: Swiftype Search
* TeraText: TeraText Suite

### Events

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

### Food and 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, India)
* Monster.com (USA), (India)
* Naukri.com (India)
* Rozee.pk (Pakistan)
* Yahoo! HotJobs (Countrywise subdomains, International)

### Legal

* Google Scholar
* Lexis (Lexis Nexis)
* Quicklaw
* WestLaw

### 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
* Searchmedica
* WebMD

### Mobile/handheld

* Taganode Local Search Engine (now defunct)
* Taptu: taptu mobile/social search (now defunct)

### News

* Bing News
* Google News
* Newslookup
* Nexis (Lexis Nexis)
* Yahoo! 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

* Bing Maps
* Géoportail
* Google Maps
* MapQuest
* Nokia Maps
* OpenStreetMap
* Petal Maps
* Tencent Maps
* Wikiloc
* WikiMapia
* Yahoo! Maps
* Yandex Maps

### Multimedia

* Bing Videos
* blinkx
* FindSounds
* Google Video
* Munax's PlayAudioVideo
* Openverse, search engine for open content.
* Picsearch
* Pixsta
* Podscope
* SeeqPod
* Songza
* Tencent Video
* TinEye
* TV Genius
* Veveo
* Yahoo! Video

### Price

* Bing Shopping
* Google Shopping (formerly Google Product Search and Froogle[1])
* Kelkoo
* MySimon
* PriceGrabber
* PriceRunner
* Pronto.com
* Shopping.com
* Shopzilla
* TickX

### Source code

* codeseek.com
* Google Code Search
* Koders
* Krugle

### BitTorrent

These search engines work across the BitTorrent protocol.

* BTDigg
* Isohunt
* Mininova
* The Pirate Bay
* TorrentSpy
* Torrentz

### Blog

* Amatomu
* Bloglines
* IceRocket
* Munax
* Regator
* Technorati

### Email

* TEK

### Forum

* Omgili

### Question and answer

#### Human answers

* Answers.com
* eHow
* Quora
* Stack Overflow/Stack Exchange Network
* Uclue
* wikiHow
* Yahoo! Answers
* Zhihu

#### Automatic answers

* AskMeNow
* Wolfram Alpha

## By model

### Search appliances

Main page: Software:Search appliance

* 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

|
|
|

HP Autonomy | Windows | IDOL Enterprise Desktop Search, HP Autonomy Universal Search.[2] | 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 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[3]
Lookeen | Windows | Desktop search product with Outlook plugin and limited support for other formats via IFilters, uses Lucene search engine.  | Proprietary (14-day trial)[4]
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 [5]
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 [6]
Terrier Search Engine | Linux, Mac OS X, Unix | Desktop search for Windows, Mac OS X (Tiger), Unix/Linux.  | MPL v1.1[7]
Tracker  | Linux, Unix | Open-source desktop search tool for Unix/Linux  | GPL v2 [8]
Tropes Zoom  | Windows | Semantic Search Engine (no longer available)[9] | Freeware and commercial
Unity Dash | Linux | Part of Ubuntu Desktop  | GPL v3,[10] LGPL v2.1[11]
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)[12]

### Child-safe search engines

* Kiddle
* KidRex
* KidzSearch
* QwantJunior
* Swisscows

### Metasearch engines

Main page: Software:Metasearch engine
Name | Language

|

Dogpile | English
Excite | English
Info.com | English
Kayak.com | Multilingual
Mamma.com |
MetaCrawler | English
MetaGer | Multilingual
Mobissimo | Multilingual
Otalo.com | English
Publisher's clearinghouse Search and Win |
Searx | Multilingual
Skyscanner | Multilingual

### 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
* Openverse
* Recoll
* Searchdaimon
* Searx
* Seeks
* Sphinx
* SWISH-E
* Terrier Search Engine
* Xapian
* YaCy
* Zettair

#### Web search engine

* Gigablast
* Grub
* Wiby

#### Enterprise search

* Apache Solr
* Elasticsearch[13]

### P2P search engines

Name | Language

|

Seeks (open-source) | English
YaCy (free and fully decentralized) | Multilingual

### Privacy search engines

* DuckDuckGo
* HotBot
* MetaGer
* Mojeek
* Qwant
* Searx
* Swisscows
* You.com

### Social and environmental focus

* Ecosia

### Semantic browsing engines

Name | Description | Speciality

|
|

Evi | Specialises in knowledge base and semantic search | answer engine
Swoogle | Searching over 10,000 ontologies | Semantic web documents
Yebol | defunct
Yummly | Semantic web search for food, cooking, and recipes | food related

### Social search engines

* ChaCha Search
* Delver
* Eurekster
* Facebook Search
* Mahalo.com
* Rollyo
* Sproose
* Trexy

### Usenet

* Google Groups (formerly Deja News)

### Visual search engines

Main page: Software:Visual search engine

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

## By popularity

## Defunct or acquired search engines

Name | Backend ownership | Demise

|
|

iWon | Ask.com | Shut down after AT&T merger
Teoma | Ask.com | Merged to Ask.com which still uses its algorithms
A9.com | Microsoft Bing | Redirect to Amazon homepage (parent company)
AOL | Google until 2015, then Microsoft Bing | Merged to Yahoo!
Alexa Internet | Microsoft Bing | Bought by Amazon in 1999, shut down in 2021
Ciao! | Microsoft Bing | Shut down in 2018
Ms. Dewey | Microsoft Bing | January 2009
Groovle | Google | Taken over by Google after Google sued for name similarity
MySpace Search | Google | Function taken over by Google in 2006
Mystery Seeker | Google | Novelty "search"; went offline in 2017
Netscape | Google | Now redirects to AOL
Ripple | Google | as of 2017 at the latest
Ecocho | Google, then Yahoo! |
Forestle | Google, then Yahoo! | Redirected to Ecosia in 2011
Rectifi | Yahoo! |
Yippy | IBM Watson | Redirected to DuckDuckGo in 2021

* 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)[14]
* BlogScope (acquired by Marketwire)
* BRS/Search (now OpenText Livelink ECM Discovery Server)
* Btjunkie
* Cuil (patents acquired by Google after shutdown)
* DeepPeep
* Direct Hit Technologies (acquired by Ask Jeeves in January, 2000)
* FedWorld Information Network (, a web and telnet search engine and FTP site specialized to searching for and within United States federal government documents, established in 1992 by the National Technical Information Service (NTIS) and shut down in 2013)
* Getit Infoservices Private Limited
* Google Answers
* GoPubMed
* hakia
* IBM STAIRS
* Infoseek (acquired by Disney)
* Inktomi
* Ixquick (merged into Startpage)
* Jubii
* Kartoo
* LeapFish
* Lotus Magellan
* MetaLib
* mozDex
* Munax
* Myriad Search
* Overture.com (formerly GoTo.com, now Yahoo! Search Marketing)
* PicoSearch [defunct July 2014][15] ...[16] [17]
* PubSub
* RetrievalWare (acquired by Fast Search & Transfer and now owned by Microsoft)
* Scroogle (Google Scraper)
* Singingfish (acquired by AOL)
* Soso
* Speechbot
* Sphere (acquired by AOL)
* Startpage (acquired by System1, an advertising company)
* Tafiti (replaced by Microsoft Bing)
* Volunia[18]
* 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. ↑ Sullivan, Danny (April 18, 2007). "Goodbye Froogle, Hello Google Product Search!". Search Engine Land. https://searchengineland.com/goodbye-froogle-hello-google-product-search-11001.
2. ↑ "HP Universal Search". http://www.autonomy.com/products/universal-search.
3. ↑ "Download Locate32 3.1.11.7100". 20 August 2012. https://www.softpedia.com/get/Internet/Servers/Database-Utils/Locate32.shtml.
4. ↑ "Lookeen 10". Lookeen. https://www.lookeen.com/.
5. ↑ According to Recoll
6. ↑ According to COPYING inside version 0.5.10 tar.bz2 package.
7. ↑ "Terrier License". 13 November 2021. https://github.com/terrier-org/terrier-core/blob/4.2/LICENSE.txt.
8. ↑ According to COPYING in SVN trunk.
9. ↑ "Retrieved 15 August 2015.". http://www.semantic-knowledge.com/download.htm.
10. ↑ "Unity on GitHub". 19 November 2021. https://github.com/ubports/unity8/blob/xenial/COPYING.
11. ↑ "Required License Files". 19 November 2021. https://github.com/ubports/unity8/blob/xenial/COPYING.LGPL.
12. ↑ "X1 Search 8". X1 Technologies. https://www.x1.com/products/x1-search/.
13. ↑ Darrow, Barb (October 13, 2017). "Alibaba Is Adding This Key Technology to Its Growing Cloud". Fortune. https://fortune.com/2017/10/13/alibaba-cloud-elasticsearch/.
14. ↑ "Data, Data, Everywhere Data. Now a Better Way to Understand It". 27 March 2015. http://asmarterplanet.com/blog/2015/03/better-way-tap-big-data-gusher.html.
15. ↑ PicoSearch, the webpage from January 2008 when the site was 10 years old(WaybackMachine)
16. ↑ PicoSearch May 27 2014 the last Wayback archived version of the page a few weeks before it shutdown](Wayback Machine)
17. ↑ "Goodbye, PicoSearch", Kessler Freedman inc. May 28 2014
18. ↑ "Il dominio Volunia.it è in vendita". https://news.mrw.it/dominio-volunia-it-vendita_15916.html.

## External links

* Search Engines at Curlie

Please be cautious adding more external links.
Wikipedia is not a collection of links and should not be used for advertising.
Excessive or inappropriate links will be removed.
See Wikipedia:External links and Wikipedia:Spam for details.
If there are already suitable links, propose additions or replacements on the article's talk page.

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* v
* t
* e

Web search engines

Active|

* AOL
* Ahmia
* Ask.com
* Baidu
* Bing
* Blackle
* Dogpile
* DuckDuckGo
* Ecosia
* Exalead
* Excite
* Fireball
* GenieKnows
* Gigablast
* Google
* HotBot
* Info.com
* Kiddle
* KidRex
* KidzSearch
* Lycos
* MetaGer
* Mojeek
* Naver
* Qwant
* Parsijoo
* SAPO
* Searx
* Seznam.cz
* Sogou
* Sputnik
* Startpage
* Swisscows
* WebCrawler
* YaCy
* Yahoo!
* Yandex
* Yippy
* Yooz
* Youdao

Inactive|

* 123people
* A9.com
* Aliweb
* AlltheWeb
* AltaVista
* Blekko
* Boogami
* Cuil
* Empas
* Forestle
* Go.com
* Infoseek
* Inktomi
* Ixquick
* JumpStation
* LeapFish
* Mugurdy
* Northern Light
* Powerset
* Scroogle
* SearchMe
* Soso
* Teoma
* Viewzi
* Vivisimo
* Volunia
* W3Catalog
* Wikiseek
* Yebol

* Comparison
* Complete list

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