Comparison of web search engines

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

Many search services are not listed, including historical ones that have gone obsolete.

Search results[edit]

Search engineCompanyPages indexedDaily direct queriesResults countAds
BingMicrosoft13.5 billion[1]?YesNo
DuckDuckGoDuckDuckGo?3,5 million[2][3]NoNo
GigablastIndependent>1 billion[4]?YesNo
GimmeyitAppScience,LLCN/A (crowd sourced)?NoNo
Google SearchGoogle40 billion[1]330 million[5][a]YesYes (and[6]Striquent??YesNo
Startpage (and Ixquick)[7]Ixquick??YesYes
Yahoo! SearchYahoo!10 billion[1]?NoNo
Yandex SearchYandex>2 billion[8]?NoNo
  1. ^ Assuming 9.9 billion monthly searches is average, and using 30 days as the average length of a month.

Digital rights[edit]

Search engineLocationIP address tracking[a]HTTP tracking cookiesInformation sharingBrowser/platform trackingTor gateway availableHTTPS availableProxy view on searchCensored in (countries)Personalized results[b]
BingUSAYes[9]?Yes[9]Yes[9]?No?India[10]Yes[citation needed]
DuckDuckGo[11]USANo?NoNoYesYes (default)??No[12]
Google SearchUSAYes[9]?Yes[9]Yes[9]?Yes (default if signed in[14])?Argentina[15]Up to User [16] (and (default)??No
Startpage (and Ixquick)USA/NetherlandsNo?NoNo?Yes (default)Yes (optional)NoNo. Can not discern users.[17]
Yahoo! SearchUSAYes[9]?Yes[9]Yes[9]?No?Argentina[15], India[10]?
Yandex SearchRussia??No[18]?????Yes[19]
  1. ^ Tracking the user is not necessarily bad faith behaviour – it has to be conducted in order to provide personalized search results.
  2. ^ The results of the search are arranged for the user in accordance to his/her interests as determined from previous search queries or other information available to the search engine.

Software distribution[edit]

Search engineLicense
DuckDuckGoMostly proprietary but growing portion is free software[20]
Google SearchProprietary (and Privatelee)?
Startpage (and Ixquick)?
Yahoo! SearchProprietary
Yandex SearchProprietary


  1. ^ a b c "Size Google, Bing, Yahoo search (number of web pages)". Retrieved March 23, 2013. 
  2. ^
  3. ^ DuckDuckGo: Instant Answer API
  4. ^ Gary Price, "Gigablast Passes the One Billion Page Mark", Search Engine Watch, January 8, 2005 full text
  5. ^ Burns, Enid. "Almost 12 Billion U.S. Searches Conducted in July". Retrieved 9 February 2013. 
  6. ^ "Privacy Policy" Qrobe. Retrieved 3 October 2013.
  7. ^
  8. ^ "SEC Filing 2011". Form 20-F. "Our search index includes billions of webpages..": Yandex N.V. 31 December 2011. p. 45. Retrieved 21 April 2012. 
  9. ^ 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. 
  10. ^ a b "Bing And Yahoo Censor Indian Search Results – Disgrace". Retrieved December 30, 2009. 
  11. ^ Holwerda, Thom (June 21, 2011), "DuckDuckGo: The Privacy-centric Alternative to Google", OSNews, retrieved March 30, 2012 
  12. ^ "Don't Bubble Us". Retrieved April 3, 2012. 
  13. ^ a b c d e "Gigablast - The Private Search Engine". Retrieved 2013. 
  14. ^
  15. ^ a b
  16. ^ "Turn off search history personalization". Retrieved July 11, 2013. 
  17. ^ Startpage Protects Your Privacy!. Retrieved on 2013-07-21.
  18. ^ "Privacy Policy – Legal Documents". Yandex.Company. 3.3.1.: LLC Yandex. 15 November 2011. Retrieved 21 April 2012. 
  19. ^ "Компания Яндекс — Персональный поиск". Retrieved May 22, 2013. 
  20. ^ "DuckDuckGo | Open source". 2012-08-13. Retrieved 2012-12-20.