WWW::TamperData

Tamperdata is a Firefox extension that lets you intercept HTTP requests and modify the data should you wish to do so. It also comes with some penetration testing macros readily available to make your work a little easier. Tamperdata can also be used for other purposes and once you're finished using it you can export the web requests to xml files. The perl module WWW::TamperData is an interface to these tamperdata xml files.

You can find the latest version on CPAN.