Docmost – Open-source wiki software with real-time collaboration, diagrams, AI, SSO, RBAC permissions and more.

Learn more

Open Source CAPTCHA & Bot Protection Tools using Prettier

A curated collection of the best open source tools for distinguishing humans from bots (CAPTCHA) and preventing spam. using Prettier.

Next-Gen CAPTCHA and Spam Protection, GDPR compliant

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:

Invisible bot protection that respects user privacy

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

Open Source Alternative to: