This chart shows the market share of the most popular applications in the category CAPTCHAs based on the number of installations detected by Wappalyzer in the past 30 days.

Top 10 Applications in this Category

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#	Application	Websites using this	Pageviews
1	reCAPTCHA	31,260	333,696
2	Mollom	2,010	29,054

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