Take a Look: webarena.com.au
We developed a comprehensive custom Content Management System based on a bespoke framework. This system is now currently used by over 600 clients and is still growing strong.
The CMS system is a shared one, which makes rolling out new features and bug fixes easy to do because you only need to update the core system (which all of the web sites link in to). The system consists of many different web applications (shopping system, newsletter tools, advertising modules, document centres and more) that together allow the user to easily manage every aspect of their website.