Drup.org

Here are some resources for comparing the two systems:

• Differences between CRM Core and Redhen from the CRM Core issue queue
• What makes Party Special —not a lot of content
• The main discussion group
  • Why did you choose Redhen or CRM Core? —some interesting opinions
• The Drupal Experience —a useful comparison
  • Part 1: Differences in Philosophy
  • Part 2: Contact Management
• Good PDF comparing n CiviCRM, RedHen and CRM Core
• Useful discussion on LinkedIn