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Apps with 'Captcha' feature

  1. hCaptcha is designed to solve the most labor intensive problem in machine learning: labeling massive amounts of data in a timely, affordable, and reliable way.
  2. The user-friendly CAPTCHA alternative. Friendly Captcha is a tool for preventing spam on your website. Other CAPTCHAs are a burden on your users, Friendly Captcha respects your users.