Joomla! is a free and open source Content Management System (CMS) for publishing content on the World Wide Web and intranets and a model–view–controller (MVC) Web application framework that can also be used independently
TYPO3 is an Open Source Enterprise Web Content Management System (CMS), written in PHP
"I didn t work with these applications yet but afaik typo3 and ezpublish both php are considered much more professional than joomla"
from question "What is the best free open source CMS (content management system) solution?"