Portland State University using Drupal We're on a roll with universities using Drupal! Portland State University (PSU), with more than 24,000 students, is using Drupal for their main website at http://pdx.edu. — Dries Buytaert Dries Buytaert is an Open Source advocate and technology executive. More than 10,000 people are subscribed to his blog. Sign up to have new posts emailed to you or subscribe using RSS.