What is Plone?
Plone is an open-source content management system (CMS).
A suite of applications focused on content management brought to you by an awesome open source community.
Plone was born in 2001 as a system for managing web content, written in Python and built on top of the Zope web framework. Through many changes, Plone is now an ecosystem of complementary open source applications, all focused on high-end content management with unparalleled usability, security, customizability, accessibility, and multilingual support.