As a framework, Diem is flexible. The developer creates its own modules by declaring them in simple configuration files. Then Diem generates a code which is 100% specific to the site’s needs.
As a CMS, Diem packages many site-independant features in a clean user interface. Most of the common problems a web developer has to face up ( SEO, admin generation, search engine… ) are made easy.
Demo : http://diem-project.org/blog/online-demo-available
Download : http://diem-project.org/download
License : MIT license.