WebScarab for web application test

WebScarab is a testing tool used for analysing application data that is passed between browsers and servers. It can be used to review and modify data at either end by intercepting data originating from http and https layers. This tool can also be used as a bandwidth simulator (slow/fast network), in session id analysis, spidering url's, parameter analysis and for many other testing schemes. WebScarab is developed as an open source tool by The Open Web Application Security Project (OWASP) and can be downloaded from OWASP website