A lightweight PHP library for creating and verifying ALTCHA challenges.

A JavaScript library for creating and verifying ALTCHA challenges.

C# implementation of the ALTCHA challenge.

ALTCHA for WordPress plugin

A Go library for creating and verifying ALTCHA challenges.

A lightweight Python library for creating and verifying ALTCHA challenges.

A Symfony bundle to help integrate ALTCHA with Symfony forms.

ALTCHA for WordPress v2 is the professional solution for keeping your website safe from spam, bots, and abuse.

A lightweight Java library for creating and verifying ALTCHA challenges.

Privacy-friendly captcha extension for Keycloak - mirror only, please send your issues and PR on https://git.lacontrevoie.fr/lacontrevoie/keycloak-altcha

A lightweight Elixir library for creating and verifying ALTCHA challenges.

A lightweight library for creating and verifying ALTCHA challenges.

Krunker account checker, Altcha solver.

Altcha POW Challenge Solver

Golang implementation of ALTCHA

Django field and widget for Altcha CAPTCHA.

A tiny, super fast server for Altcha.

Drop-In package t use Altcha with Meteor 3+

An enhanced reCAPTCHA alternative and anti-spam tool to prevent automated spam bots from creating fake accounts in Moodle.

JavaScript client for ALTCHA Analytics.