DOCMan patch for Open SEF – Open-sef.org This extension allows for advanced SEF URLs. It is useful for advanced users who wish to further improve the usability of their sites, but is not necessary for beginning webmasters. Download Here: http://forum.j-prosolution.com/announcements/745-docman-advanced-sef-file-opensefreleased-version-2-now-available.html
ECJoomCommerce - Joomla-host.co.za This extension facilitates OSCommerce for your Joomla! powered sites. Installation has been said to be advanced, so beginners might want to seek some help or have a backup of the site before attempting. Despite the clumsy installation, the developers are very diligent and will help you with any problems that you might occur, and are steadily producing updates to improve on older versions. All in all, one of the best, if not the best, open-source shopping carts for Joomla!. Download Here: http://www.joomla-host.co.za/downloads/ecjc-component/3.html
EXP Templates - Feellove.eu EXP Templates is an extension that allows you to create your own templates for your sites. This is much cheaper than hiring a programmer to do it for you, and you can alter the templates to your liking for an unlimited number of times. A great extension for beginning users who need to design their own templates but have limited programming skills. Download Here: http://www.feellove.eu/exptemp/
Extended Menu - De.siteof.de The Extended Menu extension allows you to customize your menu in any way at all. This powerful and flexible extension is very customizable, but at the same time extremely difficult to use, and does not seem to be compatible with IE7. Definitely an extension for the advanced Joomla! user, as the finer aspects are very difficult to grasp. Download Here: http://joomlacode.org/gf/project/extended_menu/frs/