ImpressPages CMS!

Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (40+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware, Free Source Software (GNU/LGPL), using PHP + Smarty, MySQL, Zend Framework, jQuery and Bootstrap. Tiki can be used to create all kinds of Web applications, sites, portals, knowledge base, intranets, and extranets. It is actively developed by a very large international community.

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.

modx is a free, fast & flexible, ajax and seo content management systemMODx helps you take control of your online content. An Open Source Content Management Framework, it frees you to build sites exactly how you want and make them 100% yours. Zero restrictions and fast to build. Super-simple templates in HTML/CSS/JS (any lib you want). Registered user systems and a killer community. Welcome to web-building nirvana.

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.

Textpattern is an elegant content management system that is free, open source software. Web designers, developers, publishers and bloggers love its flexibility and extensibility. It has a powerful, sophisticated engine that can be infinitely tuned to suit whatever type of web site you can imagine.

Redaxscript is a modern, ultra lightweight and rocket fast Content Management System for SQLite, MySQL and PostgreSQL.

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!

Craft gives you the tools to sculpt a content management experienceprecisely tailored to your site’s needs.

Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications & web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, Flickr, as well as API providers and cataloguers like StrikeIron and ProgrammableWeb.