From the Zope web site: "Zope is a leading open source application server, specializing in content management, portals, and custom applications. Zope enables teams to collaborate in the creation and management of dynamic web-based business applications such as intranets and portals."
ZOPE is the Z Object Publishing Environment, a web application server, application development and extensible content
management framework, available under an open source license. It allows non-programmers to build sophisticated, dynamic,
interactive web-based systems quickly and easily, while for developers, it offers a ready made OO framework for new product development without the
learning curve associated with most development environments.
In short, enterprise-level internet capabilities at extremely low Total Cost of Ownership.