mCaptcha
Self-hosted proof-of-work CAPTCHA: no image puzzles, no cookies, no tracking. Variable difficulty and reCAPTCHA/hCaptcha-compatible APIs, built in Rust.
// PROOF-OF-WORK
3 entries tagged with "proof-of-work"
// ENTRIES
3 entries
ALTCHA
Open-source CAPTCHA alternative based on proof-of-work. Self-hostable, cookie-free, GDPR-compliant, WCAG 2.2 AA accessible and available in 50+ languages.
Cap
Open-source alternative to traditional CAPTCHAs. SHA-256 proof-of-work and JS instrumentation, lightweight (~20kb), no telemetry, self-hostable.