Category - Comment Systems

Question2Answer (Q2A) is a popular open source Q&A platform for PHP/MySQL.

We have discovered 183 live website that are using Question2Answer.

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Technology usage statistics

Websites using Question2Answer 183 websites
Most popular in the country United States of America
Market position in Comment Systems #5
Market share in Comment Systems 0.45%
Most popular version 1.7.5

Technology adoption

Recent changes in Question2Answer usage. (See Question2Answer Usage Changes report)
Websites that added Question2Answer +6
Websites that dropped Question2Answer -11
Websites that changed version of Question2Answer 2

Distribution by websites popularity

Question2Answer detection in the top websites by popularity
Top 10k sites 0 websites
Top 100k sites 4 websites
Top 1m sites 25 websites

Websites utilizing Question2Answer

Top websites that use Question2Answer

Domain Country Rank Contacts Netherlands 16,422 United States of America 28,180 Germany 62,494 France 67,102 Netherlands 128,132 United States of America 174,190
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Market Share

Question2Answer market share within the Comment Systems category

Geographical Distribution

Technology usage distribution by websites across the globe.


(Ordered by popularity)
  • 1.7.5 (20.41%)
  • 1.7.4 (20.41%)
  • 1.7.0 (12.24%)
  • 1.7.2 (10.20%)
  • 1.7.1 (10.20%)
  • 1.6.2 (8.16%)
  • 1.5.4 (8.16%)
  • 11.7.1 (2.04%)
  • 1.7.3 (2.04%)
  • 1.6.3 (2.04%)

See all 12 versions ...

Question2Answer often used together with

Category - Programming Languages.
PHP is used together with Question2Answer on 201 domains. Total 4,026,633 domains found using PHP
Category - Document Encoding.
UTF-8 is used together with Question2Answer on 183 domains. Total 8,085,874 domains found using UTF-8
Category - JavaScript Libraries.
jQuery is used together with Question2Answer on 182 domains. Total 4,109,387 domains found using jQuery
Category - Document Standards.
JavaScript is used together with Question2Answer on 182 domains. Total 6,112,271 domains found using JavaScript
Category - Mobile.
Viewport Meta is used together with Question2Answer on 149 domains. Total 5,073,584 domains found using Viewport Meta
Category - Advertising Networks.
Google AdSense is used together with Question2Answer on 114 domains. Total 1,421,005 domains found using Google AdSense

Alternative Technologies

Disqus: Total 38,830 domains found using Disqus
IntenseDebate: Total 379 domains found using IntenseDebate
Livefyre: Total 691 domains found using Livefyre
Qualtrics: Total 748 domains found using Qualtrics