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.
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.
TYPOlight is a content management system (CMS) for people who want a professional Internet presence that is easy to maintain. The state-of-the-art structure of the system offers a high security standard and allows you to develop search engine friendly Web sites that are also accessible for people with disabilities. Furthermore, the system can be expanded flexibly and inexpensively. It features easy management of user rights, a Live Update Service, a modern CSS framework, and many already integrated modules (news, calendar, forms, etc.).
CS-Cart is a turnkey shopping cart solution that includes all necessary features to build a successful online Web store. It is ready to use right from the start. With its functionality you can start an ecommerce Web site of any complexity: from a one-product shop to a full-featured online store.
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.
Molinos CMS is a modular CMS. It supports multiple Web sites per installation, multiple domains per Web site, and different subdomains for different Web site sections. It uses XSLT for templating; templates can be organized in themes, which can be applied to either all pages or particular pages. It can use MySQL or SQLite for data stoarge; all data is available in XML format, ready to use by templates and scripts. User groups (roles) and advanced ACL can be used to control access to that data. It supports many caching and code optimization techniques. Data storage is optimized to minimize queries required to display pages. There are modules for integrating with various third-party services (over 70 modules). Modules are simple to write using the provided documentation (currently only available in Russian). Web sites can use local and system modules simultaneously. It works with most Web servers, and has a built-in Web server (for localhost development). It also has a CLI for most tasks.
papaya CMS is a Web Content Management System based on open standards (including XML, XSLT, PHP, and MySQL/PostgreSQL). It is compatible with almost every operating system, is platform-independent, is multi-lingual, offers great usability, and is easy to extend via its plugin system. It is scalable and perfect for business websites.