How was this website created?

The SSA website was totally redesigned using Drupal (pronounced /ˈdruːpəl/), a free and open source Content Management System (CMS).  Drupal provides the tools to create a community website that allows member participation.  A slightly more dramatic demonstration of Drupal's power and flexibility is found at

Open source means that the code or computer language is not proprietary. Anyone who understands the code may suggest or write software changes that may be easily integrated into the new system. Additionally, other developers from around the world may make changes to improve the system.