TomatoCMS is a powerful content management system. Its key feature is its Layout Editor and widget concepts. TomatoCMS also supports plugins/hooks, templates/skins, multiple languages, and has high performance. It supports a modular architecture with more than 10 built-in modules, such as ad, category, comment, menu, multimedia, news, poll, tag, and upload.
Elefant is a full-featured, but refreshingly simple CMS and PHP Web framework. It features an intuitive, streamlined admin interface, a tightly integrated WYSIWYG editor, dynamically embeddable content objects for building dynamic Web sites without touching code, and an extremely fast, secure, and flexible framework for add-ons and themes. The core CMS includes page editing, a blogging engine, site navigation, file and user management, automatic version control, a tool for translators and multilingual site management, and an in-browser theme/layout editor. It is also extensively documented and has a small but friendly and active developer community.
AlphaLemon CMS is a content management system built on top of the Symfony2 framework. It is designed to make it as easy as possibile to manage a Web site without requiring programming or a large learning curve, while giving developers a robust and flexible framework on which to build Web applications and distributable extensions.