Prosopo
Privacy focused CAPTCHA with an open source client and EU processing.
About Prosopo
Prosopo is a bot and agent trust platform, delivered as a widget (Procaptcha) or at the edge (Prosopo Protect), with Spam Filter available as an add-on. The widget stack is open source on GitHub. The company is UK-incorporated.
Stated use cases include AI SaaS and freemium apps, e-commerce and ticketing, content and publishers, open source and indie developers, and scaling SaaS teams. Procaptcha is listed as free for the first 10,000 verifications per month.
Drafted from prosopo.io · not yet confirmed by Prosopo
How it works
Prosopo is a CAPTCHA and bot detection service with an open source client, a proof of work mode that avoids puzzles, an image challenge fallback, and a verdict that explains which detector fired. It's UK incorporated with EU data processing and markets itself as a GDPR native alternative to hCaptcha and reCAPTCHA. Its published tiers came up repeatedly in the pricing research for this catalog.
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