Which of the following is a popular CMS?

Joomla is a well-known content management system (CMS) that allows users to create, manage, and publish digital content easily. It provides a user-friendly interface and a variety of templates and extensions, allowing both beginners and experienced developers to build websites with rich functionality without needing extensive coding knowledge. Being an open-source platform, Joomla offers flexibility for users to customize their sites according to their specific needs while benefiting from a large community of developers who contribute to its growth.

In contrast, MySQL is a relational database management system used for storing and retrieving data and is not a CMS itself. Photoshop is a graphic design software used for editing images and creating visual content rather than managing website content. HTML5, while an important markup language for structuring content on the web, does not function as a CMS and doesn’t provide tools for content creation or management in the same manner as a CMS does.