Plone

Plone is a powerful, flexible 'open source' Content Management Solution that is easy to install, use and extend. Thousands of websites across large and small businesses, education, government, non-profits, sciences, media and publishing are using Plone to solve their content management needs. Plone is supported by a global network of over 300 solution providers in more than 50 countries.

Plone is open on many levels. It runs on Linux, Windows, Mac OS X, FreeBSD and Solaris — and offers a straightforward installation to get you up and running in minutes. It has been translated into more than 40 languages. Plone’s intellectual property and trademarks are protected by the non-profit Plone Foundation.