Comparison of Q&A sites

The following is a list of websites that follow a question-and-answer format. The list contains only websites for which an article exists, dedicated either wholly or at least partly to the websites.

WebsiteFoundedClosedDescription/focusLanguages availableCopyrighting of user contributionsRegistration required? Price
3form19982016Many topicsEnglishN/AN/A
4chan2003All topicsMostly EnglishFree
8chan2013All topicsMostly EnglishFree
Answers.com2005All topicsEnglishFree
Ask.fm2010Social topics49 languagesYes
Askbot2009N/Avariesvariesvaries
Ask MetaFilter2003Many topicsEnglishAll posts are copyright to their original authors.[1]No to browse, yes to contribute
Avvo2006LegalEnglishYes
Baidu Knows2005Many topicsChineseNo to browse, yes to contribute
BlikBook2010N/ALocal academicEnglishYes
Blurtit2006All topicsEnglishYes
Brainly2009Academic12 languagesContributed content owned by its author(s)No to browse, yes to contribute
Brilliant.org2013Science, technology, mathEnglishUser retains ownership; Brilliant can use, distribute, modify.[2]Yes/Paid[3] $599.99 for life time use
ChaCha20062016Many topicsEnglishOwned by ChaCha.[4]N/A
Chegg2005AcademicEnglishOwned by Chegg Inc.[5]Yes / paid
eNotes2005AcademicEnglishOwned by eNotes.com[6]Yes / paid $14.99/month; $49.99/year[7]
Experience Project20072016Social topicsEnglishTerms of use for Experience Project[8]anonymous
Experts-Exchange1996Information technologyYes / paid
Fixya2005Consumer productsEnglishYes
Google Answers20022006EnglishYes
Google Questions and Answers20072014Many topicsRussian, Chinese, English, FrenchN/A
Gutefrage.net2006GermanYes Free
HealthTap2011Health informationEnglishNo
Internet Oracle1989All topics (humorous)EnglishNo
Jelly20132017All topicsEnglish
JustAnswer2003All topicsEnglish, Spanish, German, JapaneseYesNo
Knowledge Search2002Many topicsKorean
LinkedIn Answers20072013BusinessYes
MadSci Network1995ScienceEnglish
Mahalo.com20072014Many topicsEnglishN/A
Ответы@Mail.Ru2006Russian
ProfNet1992JournalistsEnglishYes
Quora2009Many topics22 languagesContributions owned by the author. Quora granted "worldwide, non-exclusive, royalty-free license" to content use, distribution, or modification.[9]Yes, except to view single answers Free
Reddit2005All topicsDepends on subredditNo to browse, yes to contribute
Sharecare2009Health and wellnessEnglishNo
Spring.me (formerly Formspring)20092015All topicsEnglishYes
Stack Exchange2008Many topicsEnglish (Q&A about other languages takes place in those languages as well as English)Contributions owned by the author. Contributions "perpetually and irrevocably licensed to Stack Exchange under the Creative Commons Attribution Share Alike license".[10]No to browse and answer, yes to ask and contribute fully. Some topics allow asking as a guest.
The Straight Dope1973 (print)Many topicsEnglishNo
Transtutors2007AcademicEnglishOwned and operated by Transweb Educational Services[11]Yes / paid
TXN (The Experts Network)2011?SportsEnglishNo
Uclue20072017Many topicsEnglishYes
WikiAnswers20022018Many topicsSubsumed by Answers.com (one of several concurrent URLs)
English Wikipedia Reference Desk2004Many topicsEnglishCC-BY-SA 3.0 and GFDL dual licenseNo
Yahoo! Answers2005All topics13 languagesContributions owned by the author. Yahoo retains rights to the use, distribution or modification.[12]No
Zhihu2011Many topicsChinese and a few othersOwned and operated by the original authors.Yes, except to view single answers

See also

References

  1. Haughey, Matt. "FAQ: Who owns the copyright on MetaFilter content?". MetaFilter. Retrieved 20 May 2014.
  2. "Terms of use of Brilliant.org". Brilliant.org. Retrieved 8 October 2014.
  3. https://brilliant.org/premium/?elementId=clicked_b2_mobile_header
  4. "Terms of use of the ChaCha service". ChaCha.com. Archived from the original on 14 November 2015. Retrieved 3 January 2016.
  5. "Terms of use of Chegg.com". Chegg. Retrieved 3 January 2016.
  6. "Terms of use of eNotes.com". eNotes. Retrieved 3 January 2016.
  7. https://www.enotes.com/jax/index.php/checkout/trial 31 January 2020
  8. "Statement of Rights and Responsibilities". Experience Project. Archived from the original on 13 August 2015. Retrieved 5 August 2015.
  9. "Terms of use of the Quora service". Quora. Retrieved 3 January 2016.
  10. "Terms of Service — Stack Exchange". Stack Exchange. Retrieved 3 January 2016.
  11. "Terms & Conditions of Transtutors.com". Transtutors. Retrieved 9 January 2014.
  12. "Terms of use of the Yahoo Answer service". Yahoo. Retrieved 3 January 2016.
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