ALTCHA is described as 'Privacy-first solution built to help developers and website owners stop bots, spam, and automated abuse — without making things harder for real users. It replaces traditional CAPTCHA systems with a smarter, quieter approach to verification and threat detection' and is a Anti-Spam tool in the security & privacy category. There are more than 25 alternatives to ALTCHA for a variety of platforms, including Web-based, SaaS, Self-Hosted, Wordpress and Docker apps. The best ALTCHA alternative is Cap Captcha, which is both free and Open Source. Other great apps like ALTCHA are Anubis, reCAPTCHA, Private Captcha and Procaptcha.
GateCHA is a self-hosted, open-source management server for the ALTCHA proof-of-work CAPTCHA protocol. It is an alternative to ALTCHA Sentinel, not a replacement for the ALTCHA widget itself: GateCHA runs the challenge and verification endpoints for you and adds the management...
France
EU
Privacy-first, self-hosted CAPTCHA for the modern web. No Google. No telemetry. No visual puzzles. Protect your software from bots without handing over your users' data to a third party.
Mexico
