TYPO3 is a free, open source content management framework designed to simplify the creation of feature-rich websites that can be updated by nontechnical editors. It is written in PHP and is compatible with a number of popular databases, including MySQL.
TYPO3 stands out among other content management systems because of the impressive array of functionality that is incorporated into its core. This extensive core functionality allows users to quickly develop sophisticated sites with out-of-the-box TYPO3 installations. Moreover, TYPO3's well-documented extension-based architecture makes it possible for the system to grow to meet the unique needs of each individual or organization. During the course of the last ten years, tens of thousands of TYPO3 service providers and enthusiasts have created over 500,000 sites, including
TYPO3 is maintained by a nonprofit core development team and an active worldwide community of users. TYPO3 operates under the GPL license.