Больше всего голосов у WordPress, на втором Drupal CMS:

Publishing had no mass consumer brands in the top 10, as most of the other categories did. WordPress got the most votes. I was interested to see the Drupal CMS platform placing high in this category--above the consumer-oriented publishing products Typepad and Vox. Even combined, these two Six Apart services didn't come close to winning the same number of votes as Drupal.
http://www.webware.com/8301-1_109-9728770-2.html