Joomla is a content management system (CMS) created by an international team of award-winning developers, the very ones who hoisted Mambo to vertices. A CMS is a web software that will allow you to create a dynamic website with ease. Joomla! is an Open Source CMS distributed under the GNU/GPL license (free) with which you can put content online and make services available to your visitors (forum, online store, photo gallery, etc.), all without particular technical knowledge, download Joomla Templates.