IMacros

iMacros makes it easy to test web-based applications.
Homepage:	http://www.iopus.com/imacros/web-testing.htm

Description

iMacros makes it easy to test web-based applications. You can use iMacros for in-browser functional, performance, and regression testing of web applications. The built-in STOPWATCH command captures exact web page response times. iMacros can be integrated with all other testing and monitoring packages.