WordPress is probably the most famous and most powerful CMS around.Just recently WordPress announced that from first 1 000 000 websites in Alexa more than 14 % are build with WordPress
Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone.
Drupal is a free software package that allows an individual or a community of users to easily publish, manage and organize a wide variety of content on a website. Tens of thousands of people and organizations are using Drupal to power scores of different web sites
The SilverStripe CMS is a flexible open source Content Management System that gives everyone involved in a web project the tools they need to do their jobs.
CushyCMS is a Content Management Systems (CMS) that is truly simple. It’s free for unlimited users, unlimited changes, unlimited pages and unlimited sites.
Frog CMS simplifies content management by offering an elegant user interface, flexible templating per page, simple user management and permissions, as well as the tools necessary for file management. Born as phpRadiant in January 2007, Frog CMS is a PHP version of Radiant CMS, a well known Ruby on Rails application. Although the two applications still share a family resemblance, Frog is charting its own development path.
MODx helps you take control of your online content. An Open Source PHP application 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 regular HTML/CSS/JS (any lib you want). Registered user systems and a killer community. Welcome to web-building nirvana.
TYPOlight CMS is a web CMS that Uses Ajax and Web 2.0 technologies, has a live update feature for those of us who have multiple blogs, gives multi-language support and hosts a ton of other great features
The fully functional GPL version of dotCMS continues to forge ahead – providing bleed–edge features and the latest code to a thriving community of developers and users.
ExpressionEngine is a flexible, feature-rich content management system that empowers thousands of individuals, organizations, and companies around the world to easily manage their website. If you’re tired of the limitations of your current CMS then take ExpressionEngine for a spin…
Radiant is a no-fluff, open source content management system designed for small teams that was built on Ruby on Rails. It gives an endless list of awesome features and is definitely worth checking out.
A CMS made for Marketing, but strong enough for Geeks! Concrete5 is an open source content management system. It’s revolutionary – and it’s free.
e107 is another free CMS it used to have big community supporting it but it’s slowly loosing the battle.
Halogy is an easy, solid and scalable publishing platform that takes the time and hassle out of building websites. Halogy provides all the tools you need to build a site in hours, not days.
Jojo is a PHP-based free CMS for web developers wanting to build good websites. We like sites that are fast, standards compliant, easy to manage, search engine friendly and design flexible.
Liferay is a leading provider of open source enterprise portal and social collaboration software. Liferay Portal is all about choice. It gives you over 60 portlets and the most innovative technologies to let you do everything from web publishing, to building an intranet, to simply getting the right documents and applications to the right people.
MoinMoin is an advanced, easy to use and extensible WikiEngine with a large community of users. Said in a few words, it is about collaboration on easily editable web pages.
10. CMS Made Simple
If you are an experienced web developer, and know how to do the things you need to do, to get a site up with CMS Made Simple is just that, simple. For those with more advanced ambitions there are plenty of addons to download. And there is an excellent community always at your service.
ImpressCMS is a community developed Content Management System for easily building and maintaining a dynamic web site. Keep your web site up to date with this easy to use, secure and flexible system. It is the ideal tool for a wide range of users: from business to community users, from large enterprises to people who want a simple, easy to use blogging tool.
A free CMS for managing photo galleries
GalleryCMS is a free, open source PHP-based CMS built on the CodeIgniter framework that is an easy-to-use admin panel to manage photo galleries
Couch CMS http://www.couchcms.com/
A simple and free CMS for designers
No knowledge of PHP required at all.
Take any HTML/CSS template and make it CMS enabled in minutes. Just drop in a few special XHTML tags into your code and watch your static web pages come to life!
What is RuubikCMS?
RuubikCMS is an open source website content management tool which is designed to be user-friendly for both the end-user and the webmaster.