Syndicate Module
The syndicate module will display a link that allows users to take a feed from your site. It will only display on pages for which feeds are possible. That means it will not display on single article, contact or weblinks…
Extensions
The Joomla! content management system lets you create webpages of various types using extensions. There are 5 basic types of extensions: components, modules, templates, languages, and plugins. Your website includes the extensions you need to create a basic website in English, but thousands of additional extensions of all types are available. The Joomla! Extensions Directory is the largest directory of Joomla extensions.