A JavaScript library for creating and verifying ALTCHA challenges.
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Updated
Apr 23, 2026 - TypeScript
A JavaScript library for creating and verifying ALTCHA challenges.
C# implementation of the ALTCHA challenge.
A Symfony bundle to help integrate ALTCHA with Symfony forms.
Privacy-friendly captcha extension for Keycloak - mirror only, please send your issues and PR on https://git.lacontrevoie.fr/lacontrevoie/keycloak-altcha
Django field and widget for Altcha CAPTCHA.
Krunker account checker, Altcha solver.
An enhanced reCAPTCHA alternative and anti-spam tool to prevent automated spam bots from creating fake accounts in Moodle.
C++17 library and CLI implementing the ALTCHA Proof-of-Work v2 protocol.
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