SiteManPro allows you to run an unlimited number of membership sites or free blogs from a single administrative control panel. You can run your sites on different domains and keep the administrative site on a central domain. It has its own powerful content management system and many other features.
WordPress is a state-of-the-art, semantic, personal publishing platform with a focus on aesthetics, Web standards, and usability. It was born out of a desire for an elegant, well-architected personal publishing system. While primarily geared towards functioning as a Weblog, WordPress is also a flexible CMS capable of managing many types of Web sites. In addition to the basic blog functions, it also has an integrated link manager, categories, tags, custom taxonomies, file attachments, XFN support, support for stand-alone pages, Atom and RSS feeds for both content and comments, blogging API support (Atom Publishing Protocol, Blogger, MetaWeblog, and Movable Type APIs), spam blocking features, advanced cruft-free URL generation, a flexible theme system, and an advanced plugin API.
Amun is a content management framework based on the PSX framework. The goal is to build a more federated and programmable Web. This is achieved by providing a RESTful API for managing and distributing the content in standard formats like JSON, XML, Atom, and RSS. It tries to support open standards like OAuth, OpenID, etc., and gives you the freedom to access the data of a Website in the way you like. It tries to enable easy communication from server to server, browser to server, and application to server.
SCMS is an MVC based secure content management system. It is designed from the ground up to withstand common Web application vulnerabilities such as SQL injection, XSS, CSRF, session fixation/hijacking, and many others. It is designed for PHP 5.0-5.2.x and MySQL 4.1+, and it can optionally support PostgreSQL as a database backend.
BEdita is a Web development framework that comes with a full-featured content management system out of the box. BEdita 3 is a solid software environment, fully compatible and respectful of Web standards. The user interface has been developed in accordance with well-established rules in usability and ergonomics, but it is also practical and enjoyable. BEdita has been built upon CakePHP, the well known framework, from which it inherits the MVC design pattern. Moreover, a number of third party libraries and tools have been used, like JQuery, Smarty, and so on.
ContentRoller is an easy-to-configure, set up, customize, and use news, links, and blogging CMS environment that provides you the ability to have your own social news site like Digg, Yahoo Buzz, DZone, The Server Side, InfoQ, Slashdot, etc. ContentRoller can also be configured to look like a newspaper-based news site.