Download of Neos-1.2.9.tar.bz2 (Neos-1.2.9.tar.bz2 ( external link: SF.net): 41,602,983 bytes) will begin shortly. If not so, click link on the left.
TYPO3 is an enterprise class Web CMS written in PHP/MySQL. It's designed to be extended with custom written backend modules and frontend libraries for special functionality.
It has very powerful integration of image manipulation.