New to Typophile? Accounts are free, and easy to set up.
Enclosed is a rather simplistic A/B test script cribbed from stuff on the web and held together with shell-o-tape. It is run on a hacked-on-a-lot asmutils 0.18 httpd, hence the crude CGI interface.
It, and all other scripts attached, are licensed under the WTFPL. In short, you may do Whatever The F* you want to with them.