Category - Comment Systems

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

We have discovered 1,568 live websites that are using Question2Answer.

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Technology usage statistics

Websites using Question2Answer 1,568 websites
Most popular in the country United States of America
Market position in Comment Systems #3
Market share in Comment Systems 0.95%
Most popular version 1.7.4

Technology adoption

Recent changes in Question2Answer usage. (See Question2Answer Usage Changes report)
Websites that added Question2Answer +112
Websites that dropped Question2Answer -249
Websites that changed version of Question2Answer 6

Distribution by websites popularity

Question2Answer detection in the top websites by popularity
Top 10k sites 0 websites
Top 100k sites 3 websites
Top 1m sites 26 websites

Websites utilizing Question2Answer

Top websites that use Question2Answer

Domain Country Rank Contacts United States of America 21,051 United States of America 96,511 South Africa 99,483 United States of America 111,663 Japan 173,730 Germany 206,522
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Flat price per the report, subscription is not required.

Market Share

Question2Answer market share within the Comment Systems category

Geographical Distribution

Technology usage distribution by websites across the globe.


  • 1 (14 subversions, 358 domains)
  • 11 (1 subversions, 1 domains)

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