dotCMS Core is the most feature complete open source web CMS available today. Available under the GPL, you can freely download the dotCMS system and get up, running and managing web sites and web content in a matter of minutes. Unlike many other “open source” cms, dotCMS is in no way crippled. When you download the dotCMS system, you are getting all of the functions and features needed to begin creating customized, manageable and scalable web sites. This includes so called “advanced” features such as LDAP/AD integration, clustering support, online templating, Web2.0 Calendaring and the structured content engine.

If you are looking to get a head start in getting your new web sites off the ground, they offer accelerators - starter sites - that combine the power and flexibility of the dotCMS system with cutting edge information architecture, compliant HTML and pre-build functions. These accelerators are designed to be easy to customize and brand with unique graphical design.

Pricing: Free
Source: http://www.dotcms.org/