Rob Allen has a new post with some tips for those using the Zend Server Community Edition on OS X. While the Server installs a lot of the necessary software, there's still a few changes in the configuration and extra software he wanted - PHPUnit and Xdebug.
I've installed Zend Server CE on my Mac to see where it's got to and it's looking quite usable. The installation puts everything into the usr/local/zend directory which is fairly well laid out so that you can find what you are looking for. There's also a a nice admin system at http://localhost:10081 which allows you to restart PHP, view phpinfo(), configure extensions and php.ini. There's also a phpMyAdmin to help administer the bundled MySQL server. For Mac, this is now one of the better one stop shops for easy PHP & MySQL installation.
He shows how to set up pathing to include the Zend Server binary directories in your shell's paths, how to change the port over to 80 from the default 10088 and how to install PHPUnit and Xdebug.