npm
prosopo/captcha
Open-source, frictionless CAPTCHA and bot defense. A privacy-focused alternative to reCAPTCHA and hCaptcha.
Apache-2.0Sep 14, 2026 · metrics 2.10.0
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#captcha-alternative
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
5 records
npm
tiagozip/cap
Free, open-source and self-hosted CAPTCHA alternative to reCAPTCHA. Privacy-first and powered by proof-of-work and instrumentation challenges.
Custom licenseSep 15, 2026 · metrics 2.10.0
npm · Go
PrivateCaptcha/PrivateCaptcha
Independent, privacy-first, self-hostable PoW CAPTCHA service made in EU
Custom licenseSep 8, 2026 · metrics 2.10.0
npm
altcha-org/altcha
GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.
MITSep 8, 2026 · metrics 2.10.0
npm
altcha-org/altcha-lib
A JavaScript library for creating and verifying ALTCHA challenges.
MITSep 13, 2026 · metrics 2.10.0