Drupal is a content management system (CMS) and also a content management framework (CMF). Hence it’s both an application that enables non-programmers to build complex websites, and a framework that developers can use to quickly create custom functionality.

A content management system (CMS) is a software used to simplify the management and publication of HTML content such as documents and images. I have here a list of some of the most well-known and perhaps the best free and open source content management systems (CMS) available

The 2009 Open Source CMS market share report was released a couple of weeks ago. The report concludes that WordPress, Joomla! and Drupal maintain a large lead on the rest of the pack.

The better a project’s commercial arm the faster that project can progress. Drupal offers a great example.

"I am Drigg's founder and developer. Drigg and Pligg are pieces of software that will allow you to create Digg-like sites. People sometimes ask me if they should pick Drigg or Pligg. When it happens, I am not sure what I should answer. This article will hopefully solve the dilemma for most of them. " And some fun comments already :)

Drupal is an excellent free software content management system, written in PHP. It's a good choice if you have to build a new site for non-technical users or customers, as both content editing and site administration can be done directly in the main site by authenticated users, and there's very little markup for those users to learn.

Alfresco Software's survey found that companies that decided to launch its software -- as opposed to those evaluating and testing the applications -- tended to prefer open source operating systems, application servers, databases and browsers. That is, when companies eventually adopted the open source content management application, they deployed it using Linux.