Overview:

ALTCHA is a self-hosted alternative to CAPTCHA that uses a proof-of-work mechanism to protect websites, APIs, and online services from spam and abuse. It does not rely on cookies or fingerprinting, is GDPR compliant, and does not track users.

Features:

• Frictionless CAPTCHA Alternative: Uses proof-of-work instead of visual puzzles.
• Data Obfuscation: Safeguards email addresses from scraping.
• Cookie-less: Designed to be GDPR compliant by default.
• Self-hosted: Operates independently without external providers.
• SaaS Available: Provides a SaaS API option at altcha.org/docs/api.
• Server Integrations: Supports various server-side languages like TypeScript, PHP, and more.
• CMS Integration: Offers a WordPress plugin and compatibility with other libraries.

Installation:

1. Install ALTCHA by importing it in your main file:

   import altcha from 'altcha';
   

   or use the script tag to link the ALTCHA widget from the CDN:

   <script src="https://cdn.jsdelivr.net/gh/altcha-org/altcha@main/dist/altcha.min.js"></script>
   

2. Use the <altcha-widget> tag in your forms for integration.
3. Integrate ALTCHA with your server by following the server documentation.

Summary:

ALTCHA is a unique self-hosted CAPTCHA alternative that prioritizes user privacy, GDPR compliance, and efficiency. With features like data obfuscation, a lightweight bundle size, and various configuration options, ALTCHA aims to provide a seamless and secure solution for tackling spam and abuse on websites and online services.