At Drupal.hu, we host a list of Hungarian Drupal sites, into which submission is open. But publishing is moderated, partly because screenshots should be taken somehow, and we often get false submissions. The Visegrad.info Internet Magazine seemed to be a false positive too, it's footer saying that it runs on 3N CMS. But looking at the source code, obvious snippets like @import "/misc/drupal.css"; showed that 3N CMS is actually Drupal. So I was on to see, what company developed this wonderful product.