Drupal is a free software package that allows you to easily
organize, manage and publish your content, with an endless variety of
customization.
Drupal is Open Source
Drupal is open source software maintained and developed by a
community of 630,000+ users and developers. It's distributed under the
terms of the GNU General Public License
(or "GPL"), which means anyone is free to download it and share it with
others. This open development model means that people are constantly
working to make sure Drupal is a cutting-edge platform that supports the
latest technologies that the Web has to offer. The Drupal project's principles encourage modularity, standards, collaboration, ease-of-use, and more.