All of Lounge Networks linux web hosting plans support Drupal 7. Drupal is a free opensource content management system and is very powerful, yet is very easy to use.
Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow, discussion capabilities, news aggregation, metadata functionalities using controlled vocabularies and XML publishing for content sharing purposes.
For a demo and support visit the developers website at http://www.drupal.org/
Find more information on our Drupal hosting plans.