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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 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.

Search crawlers

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

Search engine Company Launched Software distribution license Pages indexed Daily direct queries Results count Advertisements
Baidu Baidu 2000 Proprietary Un­known Un­known Yes Yes
Microsoft Bing Microsoft 1998/2009 Proprietary 13.5 billion[1] Un­known Yes Yes
Exalead Exalead 2000 Proprietary Un­known Un­known Yes No
Gigablast Independent 2000 Free >1 billion[2] Un­known Yes No
Google Search Alphabet Inc 1998 Proprietary 40 billion[1] 9.022 billion[3] Yes Yes
Mojeek Mojeek 2004 Proprietary 3 billion[4] Un­known Yes No
Naver Naver Corp. 1999 Proprietary Un­known Un­known No Yes
Petal Huawei 2020 Proprietary Un­known Un­known Yes Yes
Qwant Qwant 2013 Proprietary 20 billion[5] 10 million[6] No Yes
Sogou Tencent 2010 Proprietary Un­known Un­known Yes Yes
YaCy Independent,
2005 Free 1.4 billion[7] 0.13 million [7] Yes No
Yandex Search Yandex 1997 Proprietary >2 billion[8] Un­known Yes Yes

Digital rights

See also: Comparison of webmail providers § Digital rights, PRISM (surveillance program), MUSCULAR (surveillance program), Internet privacy, and 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)
Baidu China Yes No Un­known China
Microsoft Bing USA/China Yes Yes No Un­known China
DuckDuckGo[9] USA No Verizon Internet Services Amazon EC2 Yes Yes [10] No No[11][failed verification]
Gigablast USA Yes[12] Yes[12] No Un­known
Google Search USA Yes Google data centers Yes[13] No Un­known In several countries,[14]
Mojeek UK Yes Custodian Data Centres Yes No Un­known Un­known
Petal France Yes No Un­known China
Qwant Europe, France Yes Yes Un­known Un­known Un­known
Sogou China Yes No Un­known China
Yahoo! Search USA Partial Yes[15] No Un­known Argentina[14]
Yandex Search Russia Yes Yes[16] No Un­known Un­known

Tracking and surveillance

Search engine HTTP tracking cookies Personalized results[a][b] IP address tracking[c][b] Information sharing[b][clarification needed] Warrantless wiretapping of unencrypted backend traffic[b]
Baidu Yes Un­known Un­known Un­known Un­known
Microsoft Bing Yes Yes Yes[17] Yes[17] 2014 and prior[17][18][19]
DuckDuckGo[9][20] No No No No No[citation needed]
Ecosia No[21] No No No Un­known
Gigablast Un­known No No[12] No[12] No[12]
Google Search Yes Default[22] Yes[17] Yes[17] 2013 and prior[17][23]
Mojeek No No No No Un­known
Petal Yes Un­known Un­known Un­known Un­known
Qwant No No No No No[citation needed]
Sogou Un­known Un­known Un­known Un­known Un­known
Yahoo! Search Yes Un­known Yes[17] Yes[17] 2014 and prior[17][24]
Yandex Search Un­known Yes[25] Un­known Limited[26] Un­known
  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. ^ a b c d 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


  1. ^ a b "Size Google, Bing, Yahoo search (number of web pages)". Retrieved March 23, 2013.
  2. ^ "about". Retrieved 2018-02-12.
  3. ^ "Google Annual Search Statistics". Retrieved 3 May 2017.
  4. ^ "Three Billion Page Milestone and App Availability". Retrieved 12 July 2020.
  5. ^ Qwant (2018-11-20). "Web indexation: where does Qwant's independence stand?". Medium. Retrieved 2019-02-13.
  6. ^ en:Qwant, oldid 882470394[circular reference]
  7. ^ a b "YaCy - The Peer to Peer Search Engine: Home". Archived from the original on 9 April 2017. Retrieved 1 April 2017.
  8. ^ "SEC Filing 2011" (PDF). Form 20-F. "Our search index includes billions of webpages..": Yandex N.V. 31 December 2011. p. 45. Archived from the original (PDF) on 16 June 2012. Retrieved 21 April 2012.
  9. ^ a b Holwerda, Thom (June 21, 2011), "DuckDuckGo: The Privacy-centric Alternative to Google", OSNews, retrieved March 30, 2012
  10. ^ Weinberg, Gabriel (2010-08-10). "DuckDuckGo now operates a Tor exit enclave". Archived from the original on 2014-07-26. Retrieved 2014-07-01.
  11. ^ "Don't Bubble Us". Retrieved April 3, 2012.
  12. ^ a b c d e "Gigablast - The Private Search Engine". 2013. Retrieved 2017-04-29.
  13. ^ "Google Makes HTTPS Encryption Default for Search". eWeek. Retrieved 2014-03-31.
  14. ^ a b "Yahoo & Google Forced To Censor Search Results in Argentina". Seroundtable. Retrieved 2014-03-31.
  15. ^ Danny Sullivan (22 January 2014). "Yahoo Search Goes Secure". Search Engine Land. Retrieved 31 March 2014.
  16. ^ "Yandex.Direct switches to HTTPS". Yandex. Retrieved 31 March 2014.
  17. ^ a b c d e f g h i Johnson, Kevin; Martin, Scott; O'Donnell, Jayne; Winter, Michael (June 15, 2013). "Reports: NSA Siphons Data from 9 Major Net Firms". USA Today. Retrieved June 6, 2013.
  18. ^ Danny Yadron (2013-12-05). "Microsoft Compares NSA to 'Advanced Persistent Threat' - Digits - WSJ". Retrieved 2014-01-15.
  19. ^ Tom Warren (2013-12-05). "Microsoft labels US government a 'persistent threat' in plan to cut off NSA spying". The Verge. Retrieved 2017-04-29.
  20. ^ "DuckDuckGo Privacy". 2012-04-11. Retrieved 2017-04-29.
  21. ^ "Learn more about our privacy policy and the data that we do collect". Retrieved July 18, 2019.
  22. ^ "Turn off search history personalization". Retrieved July 11, 2013.
  23. ^ Gallagher, Sean (2013-11-06). "Googlers say "F*** you" to NSA, company encrypts internal network". Ars Technica. Retrieved 2017-04-29.
  24. ^ Brandom, Russell (2013-11-18). "Yahoo plans to encrypt all internal data by early 2014 to keep the NSA out". The Verge. Retrieved 2017-04-29.
  25. ^ "Компания Яндекс — Персональный поиск". Retrieved May 22, 2013.
  26. ^ "Privacy Policy – Legal Documents". Yandex.Company. 3.3.1.: LLC Yandex. 15 November 2011. Retrieved 21 April 2012.CS1 maint: location (link)