Modules extend the capabilities of Joomla giving the software new functionality.Modules are small content items that can be displayed anywhere that your template allows it to be displayed. Modules are very easy to install in the Admin Section. Joomla modules may include: Main Menu, Top menu, Template Chooser, Polls, Newsflash, Hit Counter, etc. Members of the Joomla Community are producing third party Joomla modules on a continuous basis. They are available on http://developer.joomla.org for free download.