Why is Drupal not considered in this same sort of classification. No one in the thread except me brings this up. I now think I must be wrong and missing something. What is it about this that makes it so different? Its PHP and its a "framework" more or less.
Thanks to Gerhard's revision table work, the freelinking module, and wiki module, Drupal now has the opportunity to provide a true wiki as part of Drupal core in 4.7. While I realize that there are a lot of reasons why Drupal developers like to keep core very lean, I wanted to open up a discussion about this possibility because of the huge marketing potential this could have for Drupal. Wikis are an extremely popular web technology, and I believe that making wikis part of Drupal core would have a tremendous impact on Drupal adoption.
Here are two that were brought to my attention. If you know about them, please comment. Since the two are still in the early stages, I don't see either one of them as feature rich as drupal.
social MPN created by garett
around me created by calthrop