I concede that ColdFusion isn't exactly freeware. Nonetheless, it's the language I use for building RIAs, almost all of which rely on MySQL/phpMyAdmin and Apache. And XAMPP is the fastest (most reliable) way to load those. The problem? While I can get XAMPP to work on Leopard, ColdFusion 8 doesn't (which I find a bit ironic). Here's the process I've gone through (courtesy of Renaun Erickson - see http://renaun.com/blog/2007/08/07/230/):
 Install XAMPP
 Use the terminal to stop XAMPP and modify the XAMPP apache config file to include index.cfm (/applications/xampp/xamppfiles/etc/httpd.conf).
 Install ColdFusion (JRUN - multiserver) and, during the install, choose Apache as the webserver, setting the Apache directories as follows:
Directory and file name of server binary:
Directory and file name of server control script:
I also put the CFIDE files in the default directory for XAMPP, which is /Applications/xampp/xamppfiles/htdocs
 Restart XAMPP. While I could get ColdFusion started through the terminal, every browser wanted to treat the administrator's index.cfm page as a download. During subsequent attempts I tried installing CF8 as a standalone. No luck
So, here's the million-dollar question: Has anyone been able to get CF8 to work with XAMPP? ... on Leopard?