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Google reCAPTCHA alternatives
The 36 most used alternatives to Google reCAPTCHA, ranked by how many websites run them. Akismet leads with 261,350 sites; Google reCAPTCHA itself is on 3,022,685.
Counts are websites whose homepage code loads the tool, in StackGrep's latest crawl.
Questions
What is the most popular Google reCAPTCHA alternative?
Akismet, on 261,350 websites in our index. The table ranks every alternative we track by sites using it.
Do sites switch from Google reCAPTCHA?
Some do. The "also run Google reCAPTCHA" column counts sites that load both: often a switch in progress. Each tool's page lists its sites, and with an account you can download them.
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