Joomla

Joomla , also spelled Joomla! (with an exclamation mark) and sometimes abbreviated as J!, is a free and open-source content management system (CMS) for publishing web content on websites. Web content applications include discussion forums, photo galleries, e-Commerce and user communities and numerous other web-based applications. Joomla is developed by a community of volunteers supported with the legal, organisational and financial resources of Open Source Matters, Inc.
Joomla is written in PHP, uses object-oriented programming techniques and software design patterns, and stores data in a MySQL database. It has a software dependency on the Symfony PHP framework. Joomla includes features such as page caching, RSS feeds, blogs, search, and support for language internationalisation. It is built on a model–view–controller web application framework that can be used independently of the CMS.
Around 6,000 extensions are available from the Joomla website, and more are available from other sources. As of 2022, it was estimated to be the fifth most used CMS on the Internet, after WordPress, Shopify, Wix and Squarespace.