Plone is a user friendly implementation of the Content Management Framework written on top of ZOPE. Plone is a GUI/Interface/Implementation of the CMF. It benefits from all features of ZOPE/CMF such as: RDBMS integration, Python/Perl extensions, Object Oriented Database, Web configurable workflow, pluggable membership and authentication, Undos, Form validation, amongst many many other features. Available protocols: FTP, XMLRPC, HTTP, WEBDAV and you can hack it to enable SOAP. Turn it into a distributed application system by installing ZEO. Plone attempts to compete with Livelink, Interwoven and Documentum. It aims to be *the* opensource out-of-the-box publishing system. WWW: http://plone.org/