As a free and open source content management system (CMS), Joomla is for publishing content on the World Wide Web in the form of a website. Joomla is written in PHP and offers over 6000 free and commercial extensions from official “Joomla! Extension Directory” with more available from other sources such as this website, JoomlaTemplatesPremium.com offering premium Joomla templates and many more products related to, “templates”. Per our best estimate, Joomla is the second most used C.M.S. on Internet after WordPress. Learn how to move from Joomla to WordPress and back. Browse Joomla Templates Premium website for everything related to Joomla!