Drupal is a powerful content management system that offers you a user-friendly way of editing your web site.
Drupal is open-source and free, so you won't be locked into a contract or license. Drupal is supported by a passionate developer community and is the CMS of choice for the White House (whitehouse.gov), ING, the Small Business Association, World Economic Forum, the US House of Representatives, and many others.
With Drupal you can manage your content publishing workflows by defining user roles, content types, revisions, and moderation. Drupal provides a flexible approach to site growth and change; additional functionality and features can be added on later as needed. Drupal is more than just software; it's a community and eco-system of developers supporting some useful and powerful modules. Community-supported Drupal modules provide most of the needed functionality, but custom modules can often be a fine solution as well.