GateCHA is described as 'Self-hosted, open-source management server for the ALTCHA proof-of-work CAPTCHA protocol. It 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' and is a Anti-Spam tool in the security & privacy category. There are 1 alternatives to GateCHA for Self-Hosted and SaaS. The best GateCHA alternative is ALTCHA, which is both free and Open Source.
ALTCHA is a 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.
Czechia
EU
