TYPO3 is a contents management system written in PHP in 1997 by a danish, Kasper Skårhøj. TYPO3 is published under GNU General Public License on the Apache or IIS server, and it is distributed by Linux, Microsoft Windows or Mac OS X.

TYPO3 is a part of CMS and has most of the popular features. The overview of the possibilities of TYPO3 is available on the matrice of CMS.

The most important features of TYPO3 are :

• The architecture that consists of plugg-ins and is based on the extensions that make the evolution of the developments possible and let TYPO3 be adapted to the clients' needs without touching the heart of TYPO3.
• Many extensions are available.
• A very organized management of the right of the contributors (based on Unix) lets create the profiles of different contributors according to their needs. 
• Active community

The creation of a Web site using TYPO3 may take more time than using other CMS. TYPO3 is a favourite choice of the companies with a greater budget (e.i. the government). The work with TYPO3 is pleasant for the specialists programming in PHP. In our opinion, TYPO3 is very complex in management for ordinary users.