Plone CMS
Plone is a free and open source content management system built on top of the Zope application server. It is suited for an internal website or may be used as a server on the Internet, playing such roles as a document publishing system and groupware collaboration tool.
Plone is released under the GNU General Public License (GPL) and is designed to be extensible.
Plone is built on the Zope application server, which is written in Python. Plone is made such that all information stored in Plone is stored in Zope’s built-in transactional object database (ZODB). Plone comes with installers for Windows, Mac OS X, and Linux, along with other operating systems.
eZ Publish (pronounced “easy publish”) is an open source enterprise content management system developed by the Norwegian company eZ Systems. eZ Publish is freely available under the GPL licence, as well as under proprietary licenses that include commercial support.
eZ Publish is written in PHP. The recommended web server is Apache.
The database abstraction layer enables the use of most common databases, i.e. MySQL, PostgreSQL, Microsoft SQL Server, and Oracle, without changes to the core system, by using drivers.
The software is cluster-ready and enforces the separation of content and presentation via XML storage of all content.
