At Hebtech, we know Drupal.
Drupal is a free and open-source content management framework written in PHP and distributed under the GNU General Public License. It is used as a back-end framework for at least 2.1% of all Web sites worldwide ranging from personal blogs to corporate, political, and government sites including WhiteHouse.gov and data.gov.uk. It is also used for knowledge management and business collaboration.
In Australia, the Australian Government Information Management Office (AGIMO) has indicated its preference is to use the open-source Drupal Web platform and to have the CMS delivered as a cloud service as shown in this Computerworld article (http://www.computerworld.com.au/article/544726/australian_government_lik...). In South Australia, Drupal is used by many government departments as well as private businesses to host their sites.
Hebtech has been doing Drupal development since it started in 2010. One of our largest clients, the South Australian Attorney General's Department - www.agd.sa.gov.au, has been using Hebtech's services to enhance and maintain their Drupal site for the last 3 years. In order to see all of the Drupal websites that have been done by Hebtech, just check the Clients page. We are happy to help with the creation of new sites or the patching, support and maintenance of existing sites. To get in touch, just email email@example.com.