* [Plone](https://plone.org/) Powerful open-source CMS system ([Source code](http://collective.github.io/)) `Python``Zope`
* [Plone](https://plone.org/) Powerful open-source CMS system ([Source code](https://github.com/plone)) `Python``Zope`
* [Redaxscript](http:/redaxscript.com) - Ultra lightweight CMS for MySQL, SQLite and PostgreSQL ([Demo](http://demo.redaxscript.com/demo/login), [Source Code](https://github.com/redaxmedia/redaxscript)) `GPLv3``PHP`
* [SilverStripe](https://www.silverstripe.org) - easy to use CMS with powerful MVC framework underlying. ([Demo](http://demo.silverstripe.org/), [Source code](https://github.com/silverstripe)) `BSD``PHP`
* [SPIP](http://www.spip.net/fr) - Publication system for the Internet aimed at collaborative work, multilingual environments, and simplicity of use for web authors. ([Source code](https://core.spip.net/projects/spip/repository)) `GPLv2``PHP`