Short description: None

Web search engines are listed in tables below for comparison purposes. The first table lists the company behind the engine, volume and ad support and identifies the nature of the software being used as free software or proprietary software. The second and third table lists internet privacy aspects along with other technical parameters, such as whether the engine provides personalization (alternatively viewed as a filter bubble).

Defunct or acquired search engines are not listed here.

## Contents

* 1 Search crawlers
* 2 Digital rights
* 2.1 Tracking and surveillance
* 3 See also
* 4 References

## Search crawlers

Current search engines with independent crawlers, as of December 2018.

Search engine | Company | Launched | Software distribution license | Network | Pages indexed | Daily direct queries | Results count | Advertisements

|
|
|
|
|
|
|
|

Ahmia | IAC  | 1996  | Proprietary | Darknet |  |  |  |
AOL  |  |  |  |  |  |  |
Ask.com | IAC  | 1996  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | Yes
Baidu | Baidu | 2000  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | Yes
Blackle |  |  |  |  |  |  |
Brave Search | Brave Software, Inc.  | 2021  | Proprietary | Clearnet | Unknown  | Unknown  | No  | No
DuckDuckGo |  |  | Free  | Clearnet |  |  |  |
Ecosia |  |  |  | Clearnet |  |  |  |
Fireball |  |  |  |  |  |  |
Exalead | Exalead | 2000  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | No
Gigablast | Independent  | 2000  | Free  | Clearnet | >1 billion[1] | Unknown  | Yes  | No
Google Search | Alphabet Inc.  | 1998  | Proprietary | Clearnet | hundreds of billions[2] | 9.022 billion[3] | Yes  | Yes
Kiddle |  |  |  |  |  |  |
KidRex |  |  |  |  |  |  |
KidzSearch |  |  |  |  |  |  |
Lycos |  |  |  |  |  |  |
Microsoft Bing | Microsoft | 1998/2009  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | Yes
Mojeek | Mojeek | 2004  | Proprietary | Clearnet | 5 billion[4] | Unknown  | Yes  | No
Naver | Naver Corp.  | 1999  | Proprietary | Clearnet | Unknown  | Unknown  | No  | Yes
Parsijoo |  |  |  |  |  |  |
Petal | Huawei | 2020  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | Yes
Qwant | Qwant | 2013  | Proprietary | Clearnet | 20 billion[5] | 10 million[6] | No  | Yes
SAPO |  |  |  |  |  |  |
Seznam.cz |  |  |  |  |  |  |
Sogou | Tencent | 2010  | Proprietary | Clearnet | Unknown  | Unknown  | Yes  | Yes
Swisscows |  |  |  |  |  |  |
WebCrawler |  |  |  |  |  |  |
YaCy |  | 2005  | Free  | Clearnet | 1.4 billion[7] | 0.13 million [7] | Yes  | No
Yahoo! Search | Yahoo! | 1995  | Proprietary | Clearnet |  | Unknown  | Yes  | Yes
Yandex Search | Yandex | 1997  | Proprietary | Clearnet | >2 billion[8] | Unknown  | Yes  | Yes
Youdao |  |  |  |  |  |  |

## Digital rights

Search engine  | Server's location(s)  | Dedicated servers  | Data center  | Cloud computing  | HTTPS available  | Tor gateway available  | Proxy gateway search links available  | Internet censorship (countries)

|
|
|
|
|
|
|
|

Ahmia |  |  |  |  |  |  |  |
AOL  |  |  |  |  |  |  |  |
Ask.com |  |  |  |  |  |  |  |
Baidu | China  |  |  |  | Yes  | No  | Unknown  | China
Blackle |  |  |  |  |  |  |  |
Brave Search |  |  |  |  |  |  |  |
DuckDuckGo[9] | USA  | No  | Verizon Internet Services  | Amazon EC2 | Yes  | Yes [10] | No  | Yes
Ecosia |  |  |  |  |  |  |  |
Exalead |  |  |  |  |  |  |  |
Fireball |  |  |  |  |  |  |  |
Gigablast | USA  |  |  |  | Yes[11] | Yes[11] | No  | Unknown
Google Search | USA  | Yes  | Google data centers  |  | Yes[12] | No  | Unknown  | Yes
Kiddle |  |  |  |  |  |  |  |
KidRex |  |  |  |  |  |  |  |
KidzSearch |  |  |  |  |  |  |  |
Lycos |  |  |  |  |  |  |  |
Microsoft Bing | USA / China  | Yes  |  |  | Yes  | No  | Unknown  | Yes
Mojeek | UK  | Yes  | Custodian Data Centres  |  | Yes  | No  | Unknown  | Unknown
Naver |  |  |  |  |  |  |  |
Parsijoo |  |  |  |  |  |  |  |
Petal | France  |  |  |  | Yes  | No  | Unknown  | China
Qwant | France  | Yes  |  |  | Yes  | Unknown  | Unknown  | Yes
SAPO |  |  |  |  |  |  |  |
Seznam.cz |  |  |  |  |  |  |  |
Sogou | China  |  |  |  | Yes  | No  | Unknown  | China
Swisscows |  |  |  |  |  |  |  |
WebCrawler |  |  |  |  |  |  |  |
YaCy | Distributed,
Peer-to-peer |  |  |  |  |  |  |
Yahoo! Search | USA  | Partial  |  |  | Yes[13] | No  | Unknown  | Yes
Yandex Search | Russia  | Yes  |  |  | Yes[14] | No  | Unknown  | Unknown
Youdao |  |  |  |  |  |  |

### Tracking and surveillance

Search engine  | HTTP tracking cookies | Personalized results[lower-alpha 1][lower-alpha 2] | IP address tracking[lower-alpha 3][lower-alpha 2] | Information sharing[lower-alpha 2][clarification needed] | Warrantless wiretapping of unencrypted backend traffic[lower-alpha 2]

|
|
|
|
|

Ahmia |  |  |  |  |
AOL  |  |  |  |  |
Ask.com |  |  |  |  |
Baidu | Yes  | Unknown  | Unknown  | Unknown  | Unknown
Blackle |  |  |  |  |
Brave Search |  |  |  |  |
DuckDuckGo[9][15] | No  | No  | No  | No
Ecosia | No[16] | No  | No  | No  | Unknown
Exalead |  |  |  |  |
Fireball |  |  |  |  |
Gigablast | Unknown  | No  | No[11] | No[11] | No[11]
Google Search | Yes  | Default[17] | Yes[18] | Yes[18] | 2013 and prior[18][19]
Kiddle |  |  |  |  |
KidRex |  |  |  |  |
KidzSearch |  |  |  |  |
Lycos |  |  |  |  |
Microsoft Bing | Yes  | Yes  | Yes[18] | Yes[18] | 2014 and prior[18][20][21]
Mojeek | No  | No  | No  | No  | Unknown
Naver |  |  |  |  |
Parsijoo |  |  |  |  |
Petal | Yes  | Unknown  | Unknown  | Unknown  | Unknown
Qwant | No  | No  | No  | No
SAPO |  |  |  |  |
Seznam.cz |  |  |  |  |
Sogou | Unknown  | Unknown  | Unknown  | Unknown  | Unknown
Swisscows |  |  |  |  |
WebCrawler |  |  |  |  |
YaCy |  |  |  |  |
Yahoo! Search | Yes  | Unknown  | Yes[18] | Yes[18] | 2014 and prior[18][22]
Yandex Search | Unknown  | Yes[23] | Unknown  | Limited[24] | Unknown
Youdao |  |  |  |  |

1. ↑ The results of the search are arranged for the user in accordance to their interests as determined from previous search queries or other information available to the search engine.
2. ↑ 2.0 2.1 2.2 2.3 Cannot be verified independently, as the information is handled by servers not accessible by the public.
3. ↑ Tracking the user has to be conducted in order to provide personalized search results.

## See also

* Comparison of webmail providers – often merged with web search engines by companies that host both services
* List of search engines
* Search engine privacy

## References

1. ↑ "about". http://www.gigablast.com/about.html.
2. ↑ "How search works, organizing information". https://www.google.com/search/howsearchworks/how-search-works/organizing-information/.
3. ↑ "Google Annual Search Statistics". http://www.statisticbrain.com/Google-searches/.
4. ↑ "Mojeek Surpasses 5 Billion Pages". https://blog.mojeek.com/2022/03/five-billion-pages.html.
5. ↑ Qwant (2018-11-20). "Web indexation: where does Qwant’s independence stand?". https://medium.com/qwant-blog/web-indexation-where-does-qwants-independence-stand-8eab4f7856f8.
6. ↑ en:Qwant, oldid 882470394
7. ↑ 7.0 7.1 "YaCy - The Peer to Peer Search Engine: Home". http://www.yacy.net/en/.
8. ↑ "SEC Filing 2011". Form 20-F. "Our search index includes billions of webpages..": Yandex N.V.. 31 December 2011. p. 45. http://company.yandex.com/i/filings/YandexNV_12312011_20F.pdf.
9. ↑ 9.0 9.1 Holwerda, Thom (June 21, 2011), "DuckDuckGo: The Privacy-centric Alternative to Google", OSNews, http://www.osnews.com/story/24867/DuckDuckGo_The_Privacy-centric_Alternative_to_Google, retrieved March 30, 2012
10. ↑ Weinberg, Gabriel (2010-08-10). "DuckDuckGo now operates a Tor exit enclave". http://www.gabrielweinberg.com/blog/2010/08/duckduckgo-now-operates-a-tor-exit-enclave.html.
11. ↑ 11.0 11.1 11.2 11.3 11.4 "Gigablast - The Private Search Engine". 2013. http://www.gigablast.com/privacy.html.
12. ↑ "Google Makes HTTPS Encryption Default for Search". eWeek. http://www.eweek.com/c/a/Security/Google-Makes-HTTPS-Encryption-Default-for-Search-371629/.
13. ↑ Danny Sullivan (22 January 2014). "Yahoo Search Goes Secure". Search Engine Land. http://searchengineland.com/yahoo-search-goes-secure-182343.
14. ↑ "Yandex.Direct switches to HTTPS". Yandex. https://help.yandex.com/direct-news/n-2012-07-17.xml.
15. ↑ "DuckDuckGo Privacy". 2012-04-11. https://duckduckgo.com/privacy.
16. ↑ "Learn more about our privacy policy and the data that we do collect". https://info.ecosia.org/privacy.
17. ↑ "Turn off search history personalization". https://support.google.com/accounts/answer/54048?hl=en.
18. ↑ 18.0 18.1 18.2 18.3 18.4 18.5 18.6 18.7 18.8 Johnson, Kevin; Martin, Scott; O'Donnell, Jayne; Winter, Michael (June 15, 2013). "Reports: NSA Siphons Data from 9 Major Net Firms". USA Today. https://www.usatoday.com/story/news/2013/06/06/nsa-surveillance-internet-companies/2398345/.
19. ↑ Gallagher, Sean (2013-11-06). "Googlers say "F*** you" to NSA, company encrypts internal network". Ars Technica. https://arstechnica.com/information-technology/2013/11/googlers-say-f-you-to-nsa-company-encrypts-internal-network/.
20. ↑ Danny Yadron (2013-12-05). "Microsoft Compares NSA to ‘Advanced Persistent Threat’ - Digits - WSJ". Blogs.wsj.com. https://blogs.wsj.com/digits/2013/12/05/microsoft-compares-nsa-to-advanced-persistent-threat/.
21. ↑ Tom Warren (2013-12-05). "Microsoft labels US government a ‘persistent threat' in plan to cut off NSA spying". The Verge. https://www.theverge.com/2013/12/5/5177554/microsoft-plans-server-encryption-against-nsa-snooping.
22. ↑ Brandom, Russell (2013-11-18). "Yahoo plans to encrypt all internal data by early 2014 to keep the NSA out". The Verge. https://www.theverge.com/2013/11/18/5118150/yahoo-ceo-marissa-mayer-plans-to-encrypt-data-against-nsa-by-2014.
23. ↑ "Компания Яндекс — Персональный поиск". http://company.yandex.ru/technologies/personalised_search/index.xml.
24. ↑ "Privacy Policy – Legal Documents". Yandex.Company. 3.3.1.: LLC Yandex. 15 November 2011. http://legal.yandex.com/confidential/.

* 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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