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Open Source CAPTCHA & Bot Protection Tools using Renovate

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

mCaptcha

Privacy-first proof-of-work CAPTCHA without user friction

Stars
2,450
Forks
88
Last commit
8 months ago

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

Open Source Alternative to:

reCAPTCHA

Private Captcha

GDPR-compliant bot protection without user friction

Stars
172
Forks
5
Last commit
13 hours ago

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:

reCAPTCHA

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit