Modules are an extension which is used to render the pages in Joomla. It is also used to display the new data from the component. It frequently looks like boxes such as login module. In Joomla administrator the modules are managed by the module manager. It displays the new content and images when module is linked to joomla components.
A Joomla module may include :
* Main menu
* Top menu
* Template chooser
* Newsflash
* Polls
* Hit counters etc.
