As a stand-in for tilly, I'm providing some links for the next question which will invariably come up :

This site is based on the Everything Engine, a link to which is found at the bottom of every page. More mod_perl information can be easily obtained from perl.apache.org, documentation, FAQs, the whole enchilada. The database the Everything Engine runs on is (if I still remember it right) MySQL, which can be obtained from http://www.mysql.com.