Site-Tester is a simple Perl script used to test the availability of standard Perl modules required by MobileSiteOS™ (ref. %modules variable). It tests several Perl Modules for functionality, as opposed to just being available (LWP, Net::SSL/IO::Socket::SSL/Net::SSLeay). It also checks for the availability/functionality of the DBI and XML::Parser Perl modules. Site-Tester also provides a list of the server's current CGI Environment Variables. Module detection can be modified easily for only the ones you would like to test for. Output is HTML5 as XML. Output is sized for use by mobile devices.