Terra Global Capital is a financial services company in San Francisco I've worked with for about 4 years. I created their main application in Drupal and over time have maintained and added features. Besides the site itself which serves as a news portal and media respository, it sells rebrandable subsites (via Drupal Multisite) to clients with a particular business model. On both the main site and client sites there is a multi-user publishing workflow with Workbench.