Open Source Tools Tagged captcha

ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.

ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, CSS, Typescript, Prettier. Review the imported record before publishing or editing SEO copy.

Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero te

Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, CSS, Typescript, Docker. Review the imported record before publishing or editing SEO copy.

Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.

Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, Bash, Typescript, Prettier. Review the imported record before publishing or editing SEO copy.

Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement fo

Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, CSS, Bash, Typescript. Review the imported record before publishing or editing SEO copy.

Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic prot

Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, CSS, Bash, Typescript. Review the imported record before publishing or editing SEO copy.

A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.

A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications. It is positioned as an open-source alternative to reCAPTCHA, hCaptcha, Cloudflare Turnstile. Primary category: CAPTCHA & Bot Protection. Detected stack: JavaScript, Github Actions, NodeJS, CSS, Bash, Typescript. Review the imported record before publishing or editing SEO copy.