Comparison of web search engines

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).

For the market share of the most popular search engines, see Most popular Internet search engines. For search proxies and multi-engine searches, see List of metasearch engines.

Defunct or acquired search engines are not listed here.

Search crawlers

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

Search engineCompanyLaunchedSoftware distribution licensePages indexedDaily direct queriesResults countAdvertisements
Baidu Baidu 2000 Proprietary Un­known Un­known Yes Yes
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
Qwant Qwant 2013 Proprietary 20 billion[5] 10 million[6] No Yes
Sogou Tencent 2010 Proprietary Un­known Un­known Yes Yes
YaCy Independent,
Distributed,
Peer-to-Peer		 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
    Bing USA/China Yes Yes No Un­known China
    DuckDuckGo[9] USA No Verizon Internet Services Amazon EC2 Yes Yes [10] No No[11]
    Gigablast USA Yes[12] Yes[12] No Un­known
    Google Search USA Yes Yes[13] No Un­known Argentina,[14]
    China
    Mojeek UK Yes Custodian Data Centres Yes No Un­known Un­known
    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[lower-alpha 1][lower-alpha 2] IP address tracking[lower-alpha 3][lower-alpha 2] Information sharing[lower-alpha 2] Warrantless wiretapping of unencrypted backend traffic[lower-alpha 2]
      Baidu Yes Un­known Un­known Un­known Un­known
      Bing Un­known Un­known Yes[17] Yes[17] 2014 and prior[17][18][19]
      DuckDuckGo[9][20] No No No No No
      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
      Qwant No No No No No
      Sogou Un­known Un­known Un­known Un­known Un­known
      Yahoo! Search Un­known 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. 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

      References
      1. "Size Google, Bing, Yahoo search (number of web pages)". Retrieved March 23, 2013.
      2. "about". gigablast.com. 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
      7. "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. 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". gabrielweinberg.com. Archived from the original on 2014-07-26. Retrieved 2014-07-01.
      11. "Don't Bubble Us". Retrieved April 3, 2012.
      12. "Gigablast - The Private Search Engine". 2013. Retrieved 2017-04-29.
      13. "Google Makes HTTPS Encryption Default for Search". eWeek. Retrieved 2014-03-31.
      14. "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. 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". Blogs.wsj.com. 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)
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