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ALTCHA

GDPR compliant, self-hosted CAPTCHA alternative.
README.md

ALTCHA

ALTCHA is free, open-source CAPTCHA alternative that protects your website from spam and abuse.

It uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other CAPTCHA solutions, ALTCHA is free, open-source and self-hosted, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR.

Get Started

Refer to the documentation.

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  1. altcha altcha Public

    GDPR compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter.

    JavaScript 506 17

  2. altcha-lib altcha-lib Public

    A JavaScript library for creating and verifying ALTCHA challenges.

    TypeScript 26 6

  3. wordpress-plugin wordpress-plugin Public

    ALTCHA for WordPress plugin

    PHP 20 3

Repositories

Showing 10 of 29 repositories
  • altcha-lib-py Public

    A lightweight Python library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib-py’s past year of commit activity
    Python 4 MIT 3 0 1 Updated Nov 18, 2024
  • altcha Public

    GDPR compliant, self-hosted CAPTCHA alternative with PoW mechanism and advanced anti-spam filter.

    altcha-org/altcha’s past year of commit activity
    JavaScript 506 MIT 17 4 0 Updated Nov 14, 2024
  • altcha-lib Public

    A JavaScript library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib’s past year of commit activity
    TypeScript 26 MIT 6 1 0 Updated Nov 14, 2024
  • wordpress-plugin Public

    ALTCHA for WordPress plugin

    altcha-org/wordpress-plugin’s past year of commit activity
    PHP 20 GPL-2.0 3 0 0 Updated Nov 6, 2024
  • firebase-app-check Public
    altcha-org/firebase-app-check’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Oct 21, 2024
  • firebase-app-check-provider Public
    altcha-org/firebase-app-check-provider’s past year of commit activity
    TypeScript 0 0 0 0 Updated Oct 21, 2024
  • tracker Public

    JavaScript client for ALTCHA Analytics.

    altcha-org/tracker’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Oct 14, 2024
  • altcha-starter-react-ts Public
    altcha-org/altcha-starter-react-ts’s past year of commit activity
    TypeScript 0 1 0 0 Updated Oct 11, 2024
  • altcha-lib-php Public

    A lightweight PHP library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib-php’s past year of commit activity
    PHP 13 MIT 0 2 0 Updated Sep 22, 2024
  • altcha-lib-java Public

    A lightweight Java library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib-java’s past year of commit activity
    Java 2 MIT 1 0 0 Updated Sep 19, 2024
View all repositories

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