Project website: http://www.dotnetnuke.com/
Project Information: DotNetNuke open source project is the most widely adopted Web Content Management Platform for building web sites and web applications on Microsoft .NET.
Books on DotNetNuke:
Project website: http://www.drupal.org
Project Information: Drupal is a free and open source content management system (CMS) written in PHP and distributed under the GNU General Public License.
Books on Drupal: