A privacy-first, self-hosted CAPTCHA alternative that verifies users with background proof-of-work and instrumentation challenges instead of puzzles.
8,1 mil623JavaScriptOtherActualizado hace 7 días
altcha-org/altcha
Self-hosted, cookie-free CAPTCHA alternative that uses a proof-of-work challenge to block spam and bots, with WCAG 2.2 AA accessibility.
Alternativa open source a:reCAPTCHA
hCaptcha
Cloudflare Turnstile
- Estrellas
- 2,829
- Forks
- 0
- Issues abiertos
- 0
- Último commit
- hace 11 horas
Funciones clave
- 01Background proof-of-work challenge that avoids visual puzzles.
- 02Cookie-free and fingerprint-free, with no tracking.
- 03Argon2id and Scrypt algorithms that resist ASIC and GPU acceleration.
- 04Image code-challenge fallback with audio support.
- 05Multiple display modes and themes for the widget.
- 06Server libraries in many languages and framework starter templates.
Casos de uso
- Protecting contact, signup and login forms from spam bots without tracking users.
- Adding bot and abuse protection to APIs or comment systems while meeting GDPR and accessibility requirements.
- Running a fully self-hosted anti-spam layer with no dependency on third-party CAPTCHA services.
Temas
Preguntas frecuentes
- ¿Qué es altcha?
- Self-hosted, cookie-free CAPTCHA alternative that uses a proof-of-work challenge to block spam and bots, with WCAG 2.2 AA accessibility.
- ¿altcha es gratuito? ¿Qué licencia tiene?
- altcha es open source bajo la licencia MIT. Revisa los términos de la licencia antes de usarlo en productos comerciales.
- ¿altcha sigue mantenido?
- Mantenimiento activo. El último commit de altcha fue el 19 oct 2026.
- ¿Para qué puedo usar altcha?
- Protecting contact, signup and login forms from spam bots without tracking users. Adding bot and abuse protection to APIs or comment systems while meeting GDPR and accessibility requirements. Running a fully self-hosted anti-spam layer with no dependency on third-party CAPTCHA services.
- ¿Dónde consigo altcha?
- El código fuente y las instrucciones de instalación están en GitHub: https://github.com/altcha-org/altcha
Resumen generado por IA a partir del README del proyecto. Las estadísticas de GitHub se actualizan a diario.
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