TYPO3 4.0.1 RC1
TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets. It offers full flexibility and extendability while featuring an accomplished set of ready-made interfaces, functions and modules.
TYPO3 is a very huge and capable system and it cannot be fully learned in a week! TYPO3 will always have a long learning curve for developers. Once mastered, the system will let you do the most complex website and the authors using it will love you for the choice of TYPO3.
TYPO3 runs under many Unixes and Windows.
Download: TYPO3 4.0.1 RC1