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词条 Comparison of web search engines
释义

  1. Search crawlers

  2. Digital rights

     Tracking and surveillance 

  3. See also

  4. References

{{For|the market share of the most popular search engines|Most popular Internet search engines}}{{For|search proxies and multi-engine searches|List of metasearch engines}}{{update|date=January 2014}}

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. The second table lists 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}} data-sort-value="0" {{Unknown}} data-sort-value="0" {{Unknown}} {{Yes}}Yes}}
Bing Microsoft 1998/2009 {{Proprietary}}13.5 billion[1] data-sort-value="0" {{Unknown}} {{Yes}}Yes}}
Exalead Exalead 2000 {{Proprietary}} data-sort-value="0" {{Unknown}} data-sort-value="0" {{Unknown}} {{Yes}}No}}
Gigablast Independent 2000 {{Free}}1 billion[1] data-sort-value="0" {{Unknown}} {{Yes}}No}}
Google Search Alphabet Inc 1998 {{Proprietary}}40 billion[2]9.022 billion[3] {{Yes}}Yes}}
Mojeek Mojeek 2004 {{Proprietary}}2 billion[4] {{Unknown}} {{Yes}}No}}
QwantQwant 2013 {{Proprietary}}20 billion[5]10 million[6] {{Unknown}} {{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[10] data-sort-value="0" {{Unknown}} {{Yes}}Yes}}
{{notelist}}

Digital rights

{{See also|Comparison of webmail providers#Digital rights|PRISM (surveillance program)|MUSCULAR (surveillance program)|Internet privacy|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)
BaiduChina {{No}} {{No}} {{unknown}}China}}
BingUSA/China {{Yes}}Yes(SSL blocked in China)}} {{No}} {{unknown}}China}}
DuckDuckGo USA {{No}} Verizon Internet Services Amazon EC2 {{Yes}} {{Yes}} [8] {{No}}No}}[9]
GigablastUSA {{Yes}}[14] {{Yes}}[14] {{No}} {{unknown}}
Google SearchUSA {{Yes}}Default if signed in}}[10] {{No}} {{unknown}}Argentina}},[11]
China
MojeekUK {{Yes}} Custodian Data Centres {{Yes}} {{No}} {{unknown}} {{unknown}}
QwantEurope, France {{Yes}} {{Yes}} {{Unknown}} {{Unknown}} {{Unknown}}
Yahoo! SearchUSA {{Partial}} {{Yes}}[12] {{No}} {{unknown}}Argentina[11]}}
Yandex SearchRussia {{Yes}} {{Yes}}[13] {{No}} {{unknown}} {{unknown}}
{{notelist}}

Tracking and surveillance

Search engine HTTP tracking cookiesThe 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.{{efn|name=primary|Cannot be verified independently, as the information is handled by servers not accessible by the public.Tracking the user has to be conducted in order to provide personalized search results.{{efn|name=primary|Cannot be verified independently, as the information is handled by servers not accessible by the public.name=primary|Cannot be verified independently, as the information is handled by servers not accessible by the public.{{clarify|date=April 2017name=primary|Cannot be verified independently, as the information is handled by servers not accessible by the public.
BaiduYes}} {{unknown}} {{unknown}} {{unknown}} {{unknown}}
Bing {{unknown}} {{unknown}}Yes}}[14]Yes}}[14]2014 and prior}}[14][15][16]
DuckDuckGo[17]No}}No}}No}}No}}No}}{{cn|date=April 2017}}
Gigablast {{unknown}}No}}No}}[18]No}}[18]No}}[18]
Google Search {{unknown}}Default}}[19]Yes}}[14]Yes}}[14]2013 and prior}}[14][20]
MojeekNo}}No}}No}}No}} {{unknown}}
QwantNo}}No}}No}}No}}No}}{{cn|date=February 2019}}
Yahoo! Search {{unknown}} {{unknown}}Yes}}[14]Yes}}[14]2014 and prior}}[14][21]
Yandex Search {{unknown}}Yes}}[22] {{unknown}}Limited}}[41] {{unknown}}
{{notelist}}

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. ^{{cite web|url=http://www.gigablast.com/about.html|title=about|last=|first=|date=|website=gigablast.com|archive-url=|archive-date=|dead-url=|accessdate=2018-02-12}}
2. ^1 {{cite web | url=http://www.worldwidewebsize.com/ | title=Size Google, Bing, Yahoo search (number of web pages) | accessdate=March 23, 2013}}
3. ^{{cite web|title=Google Annual Search Statistics|url=http://www.statisticbrain.com/Google-searches/|accessdate=3 May 2017}}
4. ^{{cite web | url=https://www.androidheadlines.com/2018/08/mojeek-is-a-privacy-focused-unbiased-google-search-alternative.html | title=Mojeek Is A Privacy-Focused, Unbiased Google Search Alternative) | accessdate=November 3, 2018}}
5. ^{{Cite web|url=https://medium.com/qwant-blog/web-indexation-where-does-qwants-independence-stand-8eab4f7856f8|title=Web indexation: where does Qwant’s independence stand?|last=Qwant|date=2018-11-20|website=Medium|access-date=2019-02-13}}
6. ^{{Citation|title=Qwant|date=2019-02-09|url=https://en.wikipedia.org/w/index.php?title=Qwant&oldid=882470394|work=Wikipedia|language=en|access-date=2019-02-13}}
7. ^1 {{cite web|url=http://www.yacy.net/en/|title=YaCy - The Peer to Peer Search Engine: Home|publisher=|accessdate=1 April 2017}}
8. ^{{cite web |url=http://www.gabrielweinberg.com/blog/2010/08/duckduckgo-now-operates-a-tor-exit-enclave.html |title=DuckDuckGo now operates a Tor exit enclave |website=gabrielweinberg.com |first=Gabriel |last=Weinberg |date=2010-08-10 |accessdate=2014-07-01}}
9. ^{{cite web | url=http://dontbubble.us/ | title=Don't Bubble Us | accessdate=April 3, 2012}}
10. ^{{cite news|url=http://www.eweek.com/c/a/Security/Google-Makes-HTTPS-Encryption-Default-for-Search-371629/ |title=Google Makes HTTPS Encryption Default for Search |publisher=eWeek |date= |accessdate=2014-03-31}}
11. ^1 {{cite news|url=http://www.seroundtable.com/archives/018698.html |title=Yahoo & Google Forced To Censor Search Results in Argentina |publisher=Seroundtable |date= |accessdate=2014-03-31}}
12. ^{{cite news | url=http://searchengineland.com/yahoo-search-goes-secure-182343 | title=Yahoo Search Goes Secure | work=Search Engine Land | date=22 January 2014 | accessdate=31 March 2014 | author=Danny Sullivan}}
13. ^{{cite web | url=https://help.yandex.com/direct-news/n-2012-07-17.xml | title=Yandex.Direct switches to HTTPS | publisher=Yandex | accessdate=31 March 2014}}
14. ^1 2 3 4 5 6 7 8 {{cite news|author1=Johnson, Kevin |author2=Martin, Scott |author3=O'Donnell, Jayne |author4=Winter, Michael | title=Reports: NSA Siphons Data from 9 Major Net Firms|url = https://www.usatoday.com/story/news/2013/06/06/nsa-surveillance-internet-companies/2398345/|accessdate=June 6, 2013|work=USA Today|date=June 15, 2013}}
15. ^{{cite news|author=Danny Yadron |url=https://blogs.wsj.com/digits/2013/12/05/microsoft-compares-nsa-to-advanced-persistent-threat/ |title=Microsoft Compares NSA to ‘Advanced Persistent Threat’ - Digits - WSJ |publisher=Blogs.wsj.com |date=2013-12-05 |accessdate=2014-01-15}}
16. ^{{cite web|author= Tom Warren |url=https://www.theverge.com/2013/12/5/5177554/microsoft-plans-server-encryption-against-nsa-snooping |title=Microsoft labels US government a ‘persistent threat' in plan to cut off NSA spying |publisher=The Verge |date=2013-12-05 |accessdate=2017-04-29}}
17. ^{{cite web |url=https://duckduckgo.com/privacy |title=DuckDuckGo Privacy |date=2012-04-11 |access-date=2017-04-29}}
18. ^1 2 3 4 {{cite web | url=http://www.gigablast.com/privacy.html | title=Gigablast - The Private Search Engine | date=2013 | accessdate=2017-04-29}}
19. ^{{cite web | url=https://support.google.com/accounts/answer/54048?hl=en | title=Turn off search history personalization | accessdate=July 11, 2013}}
20. ^{{cite web|last=Gallagher |first=Sean |url=https://arstechnica.com/information-technology/2013/11/googlers-say-f-you-to-nsa-company-encrypts-internal-network/ |title=Googlers say "F*** you" to NSA, company encrypts internal network |publisher=Ars Technica |date=2013-11-06 |accessdate=2017-04-29}}
21. ^{{cite web|url=https://www.theverge.com/2013/11/18/5118150/yahoo-ceo-marissa-mayer-plans-to-encrypt-data-against-nsa-by-2014 |title=Yahoo plans to encrypt all internal data by early 2014 to keep the NSA out|first=Russell|last=Brandom |publisher=The Verge |date=2013-11-18 |accessdate=2017-04-29}}
22. ^{{cite web | url=http://company.yandex.ru/technologies/personalised_search/index.xml | title=Компания Яндекс — Персональный поиск | accessdate=May 22, 2013}}
23. ^1 {{cite web|url=http://company.yandex.com/i/filings/YandexNV_12312011_20F.pdf|title=SEC Filing 2011|date=31 December 2011|work=Form 20-F|publisher=Yandex N.V.|page=45|accessdate=21 April 2012|location="Our search index includes billions of webpages.."}}
24. ^1 {{cite web|url=http://legal.yandex.com/confidential/|title=Privacy Policy – Legal Documents|date=15 November 2011|work=Yandex.Company|publisher=LLC Yandex|accessdate=21 April 2012|location=3.3.1.}}
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