Novius OS!

HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful.

ImpressPages is a PHP framework with admin panel. A new MVC engine is under the hood so you can customize ImpressPages in no time. Write your own plugins and themes to suit your and customers’ needs best. Both website layout and administration interface are user friendly and simply gorgeous.

django CMS is an Enterprise Content Management built with Django and one of the most active open-source projects in the Django ecosystem. Since 2007 it powers tens of thousands of sites large and small across the world, and benefits from a friendly and welcoming developer community.

Plone is an open source content management system based on the Zope application server, written in python. Its known to be powerful, reliable, secure and easy to use. Plone excels when compared to other content-management systems in standards conformance, access control, internationalization, aggregation, user-generated content, micro-applications, active user groups and value. Plone website editing gives you more of a "wysiwyg" feel than most content management systems.

Many content management systems are focused on developer or site owner needs, but concrete5 is a CMS that truly delivers the best to both worlds. An in-context editing toolbar makes it easy to make changes as you navigate the live website. A truly MVC architecture and API make it easy for developers to truly use the CMS as building blocks.

eXo Platform is a cloud-ready enterprise portal and user experience platform-as-a-service (UXPaaS) for building and deploying transactional websites, managing web and social content and creating gadgets and dashboards. Built on open standards and open source technologies, eXo Platform has the features and extensibility of a UXP and the cloud architecture to build public and private clouds.

Fork CMS is dedicated to creating a user friendly environment to build, monitor and update your website. We take great pride in being the Content Management System of choice for beginners and professionals.

Alfresco is the leading open source enterprise content management system built by the most experienced team in the industry drawn from Documentum®, Vignette® and Interwoven®. Twenty years of experience drove us to believe that the Enterprise Content Management industry was driven by:

TYPO3 is an enterprise-class, open source CMS, used internationally to build and manage websites of all types, from small sites for non-profits to multilingual enterprise solutions for large corporations.

CMS Made Simple - the open source content management system for the rest of us. CMS Made Simple helps experienced web developers and designers to create sites of power and beauty in a fraction of the normal time, avoiding hours of coding and allowing your clients to update their own sites with a minimum of fuss. From a simple brochure site to a complex portal, CMS Made Simple puts the power of a modular and extendable content management system at your fingertips. And best of all, its free!