Joomla is a content management system which means that you can create, edit, and manage your site with ease. The Custom Websites pictured above are Joomla sites. Because each Joomla site is customised to specifications, each have various modules that have been created to address their specific need. Custom Websites start at $4500.
Other examples of fully custom designed Joomla websites are Mind Your Mind for Alzheimer's Australia, Success Works, Steven Walter Foundation, Compass Expeditions, and SWY Australia, whitedoggreenfrog.com (this very site!).