Altcha - Open Source Captcha

Altcha is an open-source alternative to Google Recaptcha. Altcha protects your website from spam and abuse. Altcha uses a defined mechanism to secure your website, online services and APIs from spam and undesirable content. Unlike other CAPTCHA plugins, Altcha is self-hosted, open-source, and free, does not utilize cookies nor fingerprinting, does not track visitors, and is completely compliant with GDPR.

To host Altcha, you only need to integrate the Altcha  web component into your website, which then needs to be connected to a server that provides challenges. Altcha offers an API, but this is not hosted in Europe. Altcha is licensed under the MIT license. 

Wilma developed Magento compatible Altcha module. The module provides a server side API to generate a challenge and template files to include altcha widget and altcha script.

Key Features:

• Solution for Data Privacy, Security, Spam Prevention and Compliance.
• Captcha Alternative. A privacy-friendly Captcha widget or Invisible Captcha.
• Anti-spam solution compliant with data privacy regulations.
• Modern, accessible, and inclusive approach to safeguarding websites, APIs, and online services from spam and abuse.
• Approach makes it ideal for businesses constrained by privacy regulations in the EU and around the world.
• Familiar to users and easy to integrate into any website.
• A privacy-friendly solution to spam control. 
• GDPR-compliant Spam Filter provides an additional protective layer by analyzing incoming data through natural language processing and machine learning, distinguishing between legitimate data and spam.
• Altcha Forms enables secure data collection through registration and personal data forms, questionnaires, and surveys, ensuring compliance with data protection regulations such as GDPR or HIPAA.
• M2M Altcha works as a rate-limiter implemented on the consumer’s end. It helps you protect expensive resources, and reduce spam and abuse in your online services and APIs while keeping them accessible to automated systems.
• Altcha combines Proof of Work (PoW) and an advanced Spam Filter to deliver robust spam protection. 
• Altcha is an open-source CAPTCHA Alternative that protects your website from spam and abuse. Altcha uses a defined mechanism to secure your website, online services, and APIs from spam and undesirable content. Unlike other CAPTCHA plugins, Altcha is self-hosted, open-source, and free, does not utilize cookies nor fingerprinting, does not track visitors, and is completely compliant with GDPR.
• Hyva Compatible module

We are only supporting Magento versions, which are supported by Magento too, this means for now we are only supporting PHP 8.