I recently installed Zend Server CE on my MacBook Pro to check out the performance of the "partial page" caching Zend offers in their platform.

I was pleasantly surprised how simple it was to get up and running. Zend Platform CE installs its own version of Apache, PHP. If you're installing it on Windows or Mac, it will also install MySQL.

Everything is configured and controlled in your zend path. By default on the Mac it is /usr/local/zend.