This site uses affiliate links as a means of monetization.
AxCMS.net is known as a powerful enterprise web content management system – with separated systems for managing the content and a second (or more in load balanced scenarios) for the productive environment.
With the version 9 they focused on the user interaction between the Editor and the content with the main goal being to improve the content handling and to shorten the time to market to a minimum.
Here is a video explaining the Silverlight Ribbon concept of AxCMS.net
More info can be found on AxCMS.net