What is Plone?
A powerful, flexible Content Management
solution that is easy to install, use and extend

Plone lets non-technical people create and maintain information using
only a web browser. Perfect for web sites or intranets, Plone offers
superior security without sacrificing extensibility or ease of use.
Plone is among the top 2% of all open source projects worldwide, with 200 core developers and more than 300 solution providers in 57 countries.
The project has been actively developed since 2001, is available in more than 40 languages, and has the best security  track record of any major CMS.
It is owned by the Plone Foundation, a 501(c)(3) not-for-profit organization, and is available for all major operating systems.
Sources: CVE and Ohloh.

