Zend Server
Removing Zend Server from Mac Startup
http://stackoverflow.com/questions/14087562/prevent-zend-server-ce-from-loading-at-start-up-mac-os-x http://forums.zend.com/viewtopic.php?f=8&t=9832&hilit=Zend+Server+start+up+Mac+OS+X&sid=cd6b99b201c0a2161c8eaa25f862874f
Edit or remove the files in "/Library/StartupItems/ZendServer_init/" The install docs (pdf) on the zend site talks about it.
This guy walks through getting it running on his mac. google for "guide-setup-zend-server-mac" it should be on thedeveloperblog dot net.
Setting up Zend Server 6 on OS X for PHP development
http://akrabat.com/software/setting-up-zend-server-6-on-os-x-for-php-development/
How to run both php 5.2 and php 5.3 in Zend Server CE on Mac
Fixing zend user after OSX Lion upgrade
found here http://osxdaily.com/2007/10/29/how-to-add-a-user-from-the-os-x-command-line-works-with-leopard/
The UniqueID will be whatever number is showing on your /usr/local/zend/mysql/data directory
dscl / -create /Users/zend UniqueID 103 NFSHomeDirectory /usr/local/zend
Fixing Zend Server CE 5.6.0
http://forums.zend.com/viewtopic.php?f=44&t=47908&p=113118&hilit=start+at+login#p113118