About Answers
Answers.com is an Internet-based knowledge exchange, which includes WikiAnswers, ReferenceAnswers, VideoAnswers, and five international language Q&A communities.
Question2Answer
Developer: Question2AnswerClone/Category of : Answers,Q&A,Stack Overflow,Yahoo! Answers
License :Free and Open SourceLanguage :PHP
Question2Answer (Q2A) is a popular open source Q&A solution, currently in use on 7,769 sites in 40 languages. It is built on the standard PHP/MySQL platform, and runs safe and fast.
About Q&A
Q & A, generally meaning "Questions and answers". A Q&A web site that keeps a database of questions and answers that users can search and add to.
About Stack Overflow
A language-independent collaboratively edited question and answer site for programmers.
About Yahoo! Answers
Yahoo! Answers is a community-driven question-and-answer (Q&A) site or a knowledge market launched by Yahoo!
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