This article is outdated. (January 2014)
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 Search engines 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 ]
^ Assuming 9.9 billion monthly searches is average, and using 31 days as the average length of a month.
Digital rights [ edit ]
^ 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.
^ a b c d Statement cannot be verified to be actual true as the information is handled by servers not accessed by the public.
^ Tracking the user has to be conducted in order to provide personalized search results.
See also [ edit ]
References [ edit ]
^ a b c "Size Google, Bing, Yahoo search (number of web pages)" . Retrieved March 23, 2013.
^ "Open Source Overview". DuckDuckGo Community Platform. Archived from the original on 6 June 2014 . Retrieved 6 June 2014.
^ "Duck Duck Go Instant Answer API". DuckDuckGo . Retrieved 31 March 2014.
^ Gary Price, "Gigablast Passes the One Billion Page Mark", , January 8, 2005 Search Engine Watch full text
^ "About Gigablast". gigablast.com . Retrieved 2014-07-01.
^ Burns, Enid. "Almost 12 Billion U.S. Searches Conducted in July" . Retrieved 9 February 2013.
^ "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.
^ 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.
^ Holwerda, Thom (June 21, 2011), "DuckDuckGo: The Privacy-centric Alternative to Google", OSNews , retrieved March 30, 2012
^ Weinberg, Gabriel (2010-08-10). "DuckDuckGo now operates a Tor exit enclave". gabrielweinberg.com . Retrieved 2014-07-01.
^ "Don't Bubble Us" . Retrieved April 3, 2012.
^ a b c d e "Gigablast - The Private Search Engine" . Retrieved 2013.
^ "Google Makes HTTPS Encryption Default for Search". eWeek . Retrieved 2014-03-31.
^ a b "Yahoo & Google Forced To Censor Search Results in Argentina". Seroundtable . Retrieved 2014-03-31.
^ "Turn off search history personalization" . Retrieved July 11, 2013.
^ a b "Where are your servers located, and how does this impact government/legal requirements to record, share, or hand over data?". support.startpage.com. 2013-06-01 . Retrieved 2014-07-01.
^ "Startpage Protects Your Privacy". Startpage.com . Retrieved 2013-07-21.
^ Danny Sullivan (22 January 2014). "Yahoo Search Goes Secure". Search Engine Land . Retrieved 31 March 2014.
^ "Yandex.Direct switches to HTTPS". Yandex . Retrieved 31 March 2014.
^ "Компания Яндекс — Персональный поиск" . Retrieved May 22, 2013.