4 organizations provide Drupal services and have requested to be listed here.

Vardot

57 people on Drupal.org
61 projects supported
87 issue credits in the last 90 days
Drupal Association Supporting Partner badge

Sprintive

4 people on Drupal.org
7 projects supported

MediaPlus

6 people on Drupal.org
1 project supported

O-Minds

1 person on Drupal.org