Diem CMS is a free open source content management system and content management framework for PHP projects published under the MIT license. As a framework, it’s extremely flexible and allows developers to start each project empty and create their own modules by declaring them in configuration files. As a CMS, Diem offers essential features in a clean user interface. You can try a Diem demo online at their official website or download the files and set up your own demo site after installation. The screenshots below will give you a preview of how a Diem demo looks like. The latest version available for download is 5.1.3.