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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 300 8

  2. altcha-lib altcha-lib Public

    A JavaScript library for creating and verifying ALTCHA challenges.

    TypeScript 14 4

  3. wordpress-plugin wordpress-plugin Public

    ALTCHA for WordPress plugin

    PHP 15 1

Repositories

Showing 10 of 26 repositories
  • altcha-lib-ex Public

    A lightweight Elixir library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib-ex’s past year of commit activity
    Elixir 0 MIT 0 0 0 Updated Aug 7, 2024
  • wordpress-plugin Public

    ALTCHA for WordPress plugin

    altcha-org/wordpress-plugin’s past year of commit activity
    PHP 15 GPL-2.0 1 0 0 Updated Aug 7, 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 0 MIT 1 0 0 Updated Aug 4, 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 300 MIT 8 2 0 Updated Aug 4, 2024
  • forms Public

    ALTCHA Forms enables secure data collection through forms. Compliant with GDPR and HIPAA.

    altcha-org/forms’s past year of commit activity
    Svelte 8 AGPL-3.0 3 0 0 Updated Aug 4, 2024
  • altcha-starter-rb Public
    altcha-org/altcha-starter-rb’s past year of commit activity
    Ruby 0 0 0 0 Updated Aug 3, 2024
  • altcha-lib-rb Public

    A lightweight library for creating and verifying ALTCHA challenges.

    altcha-org/altcha-lib-rb’s past year of commit activity
    Ruby 1 MIT 0 0 0 Updated Aug 3, 2024
  • altcha-starter-java Public
    altcha-org/altcha-starter-java’s past year of commit activity
    Java 0 0 0 0 Updated Jul 31, 2024
  • altcha-starter-vue-ts Public
    altcha-org/altcha-starter-vue-ts’s past year of commit activity
    Vue 0 0 0 0 Updated Jul 30, 2024
  • altcha-starter-svelte-ts Public
    altcha-org/altcha-starter-svelte-ts’s past year of commit activity
    Svelte 0 0 0 0 Updated Jul 30, 2024
View all repositories

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