Drupal

Drupal is an open-source Content Management System (CMS) and Digital Experience Platform (DXP) for building secure, scalable, and high-performance web applications.

Drupal is a robust, open-source Content Management System (CMS) and Digital Experience Platform (DXP) built on PHP. Its core strength lies in its modular architecture, allowing developers to extend functionality with over 50,000 free modules and themes. This flexibility makes it the platform of choice for large-scale, complex applications: think high-traffic government portals, major university websites, and enterprise-level e-commerce solutions. It features enterprise-grade security, native multilingual support, and exceptional scalability, ensuring high-performance digital experiences for millions of users.

https://www.drupal.org/