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ALTCHA

Bot checks without image puzzles
  • Freemium
  • Open Source
🇩🇪
Germany
ALTCHA is a CAPTCHA alternative for forms and sign-ups. Its widget uses proof-of-work challenges instead of image puzzles.

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95

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0.0/5.0

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ALTCHA is a CAPTCHA alternative for forms and sign-ups. Its widget uses proof-of-work challenges instead of image puzzles.

Self-hosted Sentinel and a WordPress plugin offer different deployment options. More advanced checks depend on the product you choose and its configuration.

Source: Product overview

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