open-source web publishing software

 Dotclear project's purpose is to provide a user-friendly
 tool allowing anyone to publish on the web, regardless of
 their technical skills.
 .
 Features:
  * Easy publication
  * Fully customizable theme
  * User-friendly administration
  * Flexible template system
  * Media management
  * Choose your input method
  * Flexible comment system
  * Built-in antispam
  * Localization
  * Presentation widgets
  * Themes and plugins
  * Pages
  * Tags and categories
  * Automated installation
  * Support for several database types
  * Multiblog
  * Multi-user with permissions
  * Standard complian
  * Accessible
  * Importing / exporting
  * Naturally optimized for search engines
  * Syndication feeds
  * Complete trackback support
  * Full Unicode support
  * XML/RPC client support
  * Extensible
  * Performance and scalability
  * Twice free