Actually MODx reminds me a lot of TYPO3, only it seems more geared towards simplicity and ease of use, I believe it might be possible to build all the advanced stuff TYPO3 is capable of with MODx and I think the result would be less complex and more accessible than TYPO3. I’m not surprised that for instance the WEC has developed a set of plugins to make it much easier to get started with TYPO3.
However if you’re a big shot reading this and you’re considering implementing some system that a hundred people are supposed to have access to and creating content with, that must be available in 10 languages and so on and so forth then yeah your only open source PHP option might be TYPO3. Just don’t expect things to be up and running any time soon if you don’t want to hire a TYPO3 consultant.
To cap things, of the above solutions the one that has impressed me most is clearly MODx, a lot of the stuff in MODx is pure genius and I wish I had thought of some of these things myself. During the past days I’ve setup a site in no time doing things with ease that would be awkard to do in for instance Joomla. Everyone with some interest in the CMS area should definitely check it out for inspiration. I can’t wait for this thing to grow and get more great extensions. The CMS discussion over at 456 Berea street made me take note of this awesome application, check it out and you will see that there are more fanboys than me out there!
