CushyCMS!

ProcessWire is a friendly and powerful open source CMS and CMF with an exceptionally strong foundation. With all custom fields, an easy-to-use jQuery-inspired API, and a powerful page selector engine, ProcessWire will rise to any task.

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.

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.

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.

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!

Installing Kirby means uploading some files to your server and that's it. Blog articles, galleries, simple pages or complex product sheets – with Kirby you are not limited to a fixed data structure. Kirby is file-based – No database involved

Symphony is an XSLT-powered open source content management system

Stacey is a lightweight content management system.No database setup or installation files, simply drop the application on a server and it runs. Your content is managed by creating folders and editing text files. No login screens, no admin interface.

A simple CMS for web designers. Take any HTML/CSS template and make it CMS enabled in minutes!

Fast and small flat-file content management system written in PHP!

SPIP is a publishing system for the Internet in which great importance is attached to collaborative working, to multilingual environments, and to simplicity of use for web authors. It is free software, distributed under the GNU/GPL licence. This means that it can be used for any Internet site, whether personal or institutional, non-profit or commercial.

Umbraco is a fully-featured open source content management system with the flexibility to run anything from small campaign or brochure sites right through to complex applications for Fortune 500's and some of the largest media sites in the world.

Automad is a file-based flat CMS and template engine. It is designed to be fully portable without any dependencies on databases or fixed locations and doesn't require any complicated setup process. All data gets stored in a human readable form. A two step caching system makes your site extremely fast. A web-based user interface makes it easy - even for beginners - to manage a website. The template engine enables designers to build custom themes and templates without PHP knowledge. The extension interface allows developers to create plugins for all kind of functionality. Deployment and backup is not more than copying the Automad directory. It is also possible to put a whole site under version control using Git or Mercurial. »