Joomla

Joomla (more accurately "Joomla!" with an excalamation mark) is a content management system not unlike Drupal or Plone. It has many plugins and themes (known as templates).

Joomla has a worse reputation than Drupal. Some of its limitations:


 * 1) Has poor support for maintaining several sites from one installation.
 * 2) Installing plug-ins (or at least some) requires turning off the PHP safe_mode.
 * 3) Support for user-friendly/search-engine-optimisation-friendly URLs is worse.

Links

 * The Joomla Homepage
 * Joomla on the Wikipedia