CiviCRM demo installations:

• CiviCRM 4.1 With Drupal 7.x
• CiviCRM 4.1 With Drupal 6.x
• CiviCRM 4.1 With Joomla 2.2.x
• CiviCRM 4.1 With Wordpress 3.3.x

• CiviCRM 3.4 With Drupal 6.x
• CiviCRM 3.4 With Joomla 1.5.x