Plone CMS: Open Source Content Management — Plone.org
This chart shows the history of detected websites using Plone
We detected the following sites were using Plone
A CMS will sometimes include a meta tag within the html of each page. This is usually a "generator" tag like <meta name="generator" content="What CMS" /> but could also be "application-name", "Powered-By" or anyting else the CMS creators decide to use.
Dedicated Content Management System Detection