SeoSimple, by Dao By Design and Ryan McLaughlin, generates automatically a meta description tag to any page of your Joomla website. This tag will be generated on page load. This generation will be ignored, if a custom meta description is in use. A fine feature of this plugin are the integrated options for displaying your page titles. Beside this, SeoSimple is free and can be used in Joomla 2.5 or its former versions, Joomla 1.5, 1.6 and 1.7.

RokNavMenu by RocketTheme comes with elegant pre-installed menu themes. You can build extended drop down menues with multilevels. RokNavMenu allows also administrator overrides and plugins, so you can also combine other extensions, like RocketTheme's RokBox, or realize your favorite menu item design, by adding your own parameters and options. The download is free. RokNavMenu is native to Joomla 2.5 and Joomla 3.0. It works also in Joomla 1.5.

Unite CMS provide their free slideshow module Unite Horizontal Carousel with 5 scrolling types. That allows you to display selected images on your Joomla website in a unique slideshow, which is full customizable in Joomla Backend. You can change the scrolling direction, arrow types or text align in easy way. Unite Horizontal Carousel based on jQuery and works in Joomla 2.5. The download is free, without conditions.