Silverstripe
For the past couple months I have been working with Silverstripe and I have to say I am very impressed. Anyone looking for a new CMS should definitely check it out.
It allows both front-end and back-end customization. Meaning the admin of the CMS can be customized and added to.
I have used this approach to build the new Interact CMS system which is tied into the Interact APIs. This has allowed the creation of a slick and powerful digital content management system that can be used for both web and mobile. All the bells and whistles are there including mobile delivery, e-commerce, phone data, member management etc.
I’ve also used it used on typical website projects as the more traditional CMS. Again, it is very easy to get going with the template system and build something that is familiar from a CMS point of view for the client, but also flexible enough to be extended to the specific needs of the client.
Rather than forcing the client/user to adapt to the CMS, the CMS adapts to the user.