Plone CMS is an Open Source, powerful and flexible Content Management System that is easy to install, use and extend. Plone CMS is ready-to-run, easy to set up, extremely flexible, and ideal for project groups, communities, websites, extranets and intranets.

Plone Content Management System (CMS) lets non-technical people create and maintain information using only a web browser. Perfect for web sites or intranets, Plone offers superior security without sacrificing extensibility or ease of use.

Open Source CMS Features

• Outstanding multilingual content management
• Easy-to-use, powerful graphical page editor
• Resource compression
• Powerful caching proxy integration
• Adjustable templates on content
• In-context editing
• Standards-compliant XHTML and CSS
• Powerful workflow capabilities
• Presentation mode for content
• Auto-generated tables of contents
• Cross-platform Content Management System
  

Website: http://www.plone.org

Download: http://plone.org/products