I wrote a web app (based on pyzza) that helps you figure out what pizza you can order when with friends. It's totally client side - you can download and run it offline. feedback is welcomed via github
like many good things - it doens't work on internet explorer... tested on chrome and firefox.
See it live here: https://rawgit.com/uvgroovy/js-pizza/master/index.html
and on github: here