reCAPTCHA is a free CAPTCHA service that enables users to digitize books, newspapers and old-time radio shows.
Use reCAPTCHA's historical employee count to better understand their growth and spending over time.
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Use reCAPTCHA's historical monthly uniques as a proxy for mindshare and web traction.
Use reCAPTCHA's mobile downloads and app ranks to evaluate the performance of their mobile apps.
Researchers built an AI that uses Google’s own tools to crack reCAPTCHA
Google reCAPTCHA v1 API Shutting Down in March 2018
Google’s next-gen reCAPTCHA test will disappear if it concludes you’re human
Is This The End Of CAPTCHA?