Joomla! features:

• Completely database driven site engines
• News, products, or services sections fully editable and manageable
• Topics sections can be added to by contributing Authors
• Fully customisable layouts including left, center, and right Menu boxes
• Browser upload of images to your own library for use anywhere in the site
• Dynamic Forum/Poll/Voting booth for on-the-spot results
• Runs on Linux, FreeBSD, MacOSX server, Solaris, and AIX