Open Source Projects tagged "Captcha Alternative"
A curated collection of the best open source projects tagged "Captcha Alternative". Each listing includes a website screenshot along with a detailed review of its features.
Next-Gen CAPTCHA and Spam Protection, GDPR compliant
Stars
2,784Last commit
9 days agoLicense
MIT
ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.
Open Source Alternative to:
Decentralized CAPTCHA for enhanced web security
Stars
300Last commit
3 hours agoLicense
Apache-2.0
A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.
Open Source Alternative to:
GDPR-compliant bot protection without user friction
Stars
194Last commit
15 hours agoLicense
Unknown
Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.
Open Source Alternative to:
Capture – Capture screenshots, generate PDFs, scrape content, extract metadata, and automate browsers with one API.
Capture