The Firefox portable WEBTOOLS offers auditing the web applications in run-time with its add-ons. Here’s the description from the author: This is a Portable version of Mozilla Firefox with several add-ons that are useful for Web Application Security. The purpose of this package is to have the best available addons to manually test XSS, SQL, siXSS, CSRF, Trace XSS, RFI, LFI, etc.
http://sourceforge.net/projects/firefoxwebtools/files/
