CPS (Collaborative Portal Server) is an extensive open source collaborative Web content management system (CMS) implemented on top of Zope and the CMF (Content Management Framework), that enables organizations to easily, quickly and efficiently implement collaborative portals (intranet, extranet or internet) and workflow- oriented business applications. CPS is a software that enable organizations to implement portalsand workflow.

Features:

• Collaborative work and publication spaces (you may need to be authenticated with the right access level to access these URLs)
• Document versionning, that allows a document to be published in one version and still worked on in another one
• Group-based, directory-backed user and roles management
• A configurable Portal interface, with a web- and accessibility-standards compliant default look and feel (you will need to be authenticated with the right access level to access this URL)
• Notifications on many kinds of events happening on the system
• An (optional) WYSIWYG editor for portal look and feel (just install CPSSkins in your CPS instance using the ZMI)
• Many user-level services, like a Webmail, Forums, shared Calendars, Newsletters and Mailing Lists, etc.
• Many powerful developers- and webmaster-level services, including support for creating your own document types, your own workflows, etc.