I'm looking for a (PHP) CMS that will allow me to restrict areas for use by external editors. For instance:
http://foo.com <- would be managed/edited by us, the site hosts
http://foo.com/bar <- would be managed by the bar editor
http://foo.com/baz <- would be managed by the baz editor
All the subdirectories would have a similar feel, but the top-level would be slightly different.
I've heard that Joomla & Drupal can achieve this, but since their plugin lists are quite large its hard to track down what to use.
Suggestions?