This group looks like it only takes the occasional enterprise-level job vacancy advert, but just in case anyone is still listening I'll give it a shot.
Can you give me a list of enterprise-level systems built with Drupal or integrated with Drupal?
Perhaps http://drupal.org/project/openenterprise, http://drupal.org/project/erpal and http://drupal.org/project/crm fit the bill - I don't know, I've never used them. Have you?
Every enterprise I've worked in (telecoms and finance) uses a common set of systems. These days they are all web front ends and distributed back ends used internally. Integration with external sites is limited - perhaps Salesforce.com, but not Basecamp (that's for SMEs, surely).
The enterprise ought to be a rich stomping ground for traditional apps integrated with Drupal and Drupal distros that do the same job, but it just isn't. Or are there loads, hidden behind NDAs (Non-Disclosure Agreements)?
What am I missing?
Many thanks,
Nick