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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.
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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.
Open source replacements for Cloudflare Turnstile with similar workflows, integrations, and product use cases.
6 alternatives
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.
Open source replacements for Cloudflare Turnstile with similar workflows, integrations, and product use cases.
6 alternatives
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.
Open source replacements for Cloudflare Turnstile with similar workflows, integrations, and product use cases.
6 alternatives
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.
Open source replacements for Cloudflare Turnstile with similar workflows, integrations, and product use cases.
6 alternatives
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.
Open source replacements for Cloudflare Turnstile with similar workflows, integrations, and product use cases.
6 alternatives
Open source deployment platform that deploys apps directly from GitHub with zero-downtime, real-time logs, preview URLs, and support for Python, Node.
Open source deployment platform that deploys apps directly from GitHub with zero-downtime, real-time logs, preview URLs, and support for Python, Node.js frameworks. It is positioned as an open-source alternative to Vercel, Netlify, Heroku, Sevalla. Primary category: PaaS & Deployment Tools. Detected stack: JavaScript, NodeJS, CSS, Bash, Docker, Python. Review the imported record before publishing or editing SEO copy.
Open source replacements for Heroku with similar workflows, integrations, and product use cases.
6 alternatives