Comparison of Q&A sites

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

Website Founded Description/focus Languages available Copyrighting of user contributions Registration required?
3form 1998 Many topics English
Answerbag 2003 2000s Yes June 1996 Many topics Yes 2010 Many topics 38 languages Yes
Ask Me Help Desk 2003 Yes
Ask MetaFilter 2003 Many topics English All posts are copyright to their original authors[1] No to browse, yes to contribute
Askalo August 3, 2010 Topics for answer by local residents 5 languages No
Askbot 2009 English and a few others Yes
Avvo 2006 Legal and Medical English No
Baidu Knows Many topics Chinese
BlikBook 2010 Academic English Yes
Blurtit 2006 No to browse, yes to contribute
Brainly 2009 Homework Help 12 languages Contributed content owned by its author(s) No to browse, yes to contribute 2013 mathematics, physics, computer science problems & discussion English User retains ownership; Brilliant can use, distribute, modify[2] Yes
ChaCha 2006 Many topics English Owned by ChaCha.[3]
Chegg 2005 Academic English Owned by Chegg Inc.[4] Yes
Enotes 2005 Academic English Owned by[5] Yes
Experience Project 2007 Anonymous Q&A for life, relationships, health, how-tos, and riddles English Terms of use for Experience Project .[6] No to browse, yes to contribute
Experts-Exchange 1996 Information Technology Yes
Fixya 2005 Consumer product related problems and solutions English Yes
GirlsAskGuys June 2007 Love, sex and relationships English Yes 2006 German Yes
Google Questions and Answers Many topics Russian, Chinese, English, French
HealthcareMagic February 2008 Health and Wellness English Yes
HealthTap 2011 Health Information from U.S. Licensed Physicians English No
Internet Oracle 1989 Humorous answers to almost anything English No
Jelly 2013 Image-based q&a app on all topics English
Jobstr 2011 Jobs and careers English
Knowledge Search 2002 Many topics Korean
LinkedIn Answers January 4, 2007
MadSci Network 1995 Science English
Mahalo May 30, 2007 Many topics English
ProfNet 1992 Connecting journalists with experts in specific fields English Yes
Quora 2009 Many topics English Contributions owned by the author. Quora granted "worldwide, non-exclusive, royalty-free license" to content use, distribution, or modification.[7] Yes
Sharecare 2009 Health and wellness English No (formerly Formspring) 2009 All topics English Yes
Stack Exchange Network 2008 English Contributions owned by the author. Contributions "perpetually and irrevocably licensed to Stack Exchange under the Creative Commons Attribution Share Alike license."[8] No to browse, yes to contribute
The Experts Network April 26, 2011 English No
The Straight Dope 1973 (print) Many topics English No
Transtutors 2007 Academic English Owned and operated by Transweb Educational Services[9] Yes
Uclue February 28, 2007 Many topics English Yes
WikiAnswers 2002 Subsumed by (one of several concurrent URLs)
English Wikipedia Reference Desk 2001 Many topics English CC-BY-SA 3.0 and GFDL dual license No
Yahoo! Answers July 5, 2005 Many topics 13 languages Contributions owned by the author. Yahoo retains rights to the use, distribution or modification.[10] No to browse, yes to contribute
Zhihu January 26, 2011 Many topics Chinese and a few others Owned and operated by the original authors. Yes

See also[edit]


  1. ^ Haughey, Matt. "FAQ: Who owns the copyright on MetaFilter content?". MetaFilter. Retrieved 20 May 2014. 
  2. ^ "Terms of use". Retrieved October 8, 2014. 
  3. ^ "Terms of use of the Chacha service". May 31, 2011. Retrieved November 5, 2011. 
  4. ^ "Privacy Policy of". Chegg. Retrieved February 8, 2013. 
  5. ^ "Privacy Policy of". enotes. Retrieved August 10, 2015. 
  6. ^ "Experience Project Website". 2007. Retrieved August 5, 2015. 
  7. ^ "Terms of use of the Quora service". Quora. February 19, 2014. Retrieved December 21, 2014. 
  8. ^ "Legal — Terms of Service". Stack Exchange. December 11, 2014. Retrieved December 21, 2014. 
  9. ^ "Terms & Conditions of". Transtutors. Retrieved January 9, 2014. 
  10. ^ "Terms of use of the Yahoo Answer service". Yahoo. November 24, 2008. Retrieved November 5, 2011.