Free extensions Joomla
Advertisement easy is a Joomla! module. Don't waste your time filling out a lot of forms. Just copy your Advertisement (Google AdSense) Code and paste it into your Joomla! site!
This Module allows you to create your own HTML. Allows you to insert css and js in the head.
Automatic Image Slider w/ CSS & jQuery.
The module zAccordion is a horizontal accordion plugin for jQuery.
The module adds social buttons on your site. Easy way to get links to your site.