Top 10 open source Q&A System

1. Question2Answer (Recommend)

Question2Answer is a free and open source platform for Q&A sites.


  • PHP 4.3 or later, including PHP 5.x.
  • MySQL 4.1 or later, including MySQL 5.x.



  • PHP

Question2Answer Demo

Question2Answer Download

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2. OSQA (Recommend)


  • Python


  • GPL


OSQA Download


3. Qwench (Recommend)


  • PHP

Qwench Demo

Qwench Download

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4. LampCMS (Recommend)


  • PHP

LampCMS is an full-featured Open Source Question and Answers web program written in PHP with deep integration with Facebook, Twitter, Google, Linked-IN, Tumblr and Blogger APIs

It uses MongoDB as a database to achieve speed and scalability.

Question/Answer websites are becoming very popular, many people find them to be a better choice for building online communities than a traditional web forum.

Just like many other Question and Answer sites, LampCMS is tag-based, but it also has support for categories and unlimited sub-categories.

Some people have been referring to LampCMS as an Open Source StackOverflow and Quora crossover. All we can say is there are certainly several features similar to those of StackOverflow and several similar to Quora but this program also has some features similar traditionally found in popular Forum Software like “Sticky threads” and “Dot folders”

LampCMS Demo

LampCMS Download

2012-12-18 20 42 35

5. Coordino


  • PHP

Coordino allows you to create a question and answer system for you and your users to enjoy.

Whether you are looking to create a niche question and answer site for comic book collecting or looking for a knowledge base solution for your intranet, Coordino is here for you.

Coordino Download


6. Anwsion (from China)


  • PHP

Anwsion Demo

Anwsion Download

2012-12-18 20 44 52

7. stacked

stacked download

8. soclone

soclone download

9. phpancake

phpancake download

10. openoverflow

openoverflow download

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