Microsoft Web Application Stress Tool

http://www.softwaretestinghelp.com/

http://www.west-wind.com/presentations/webstress/webstress.htm

http://www.sunlightny.org/snl1/app/index.jsp

Load Testing Tool
http://webtool.rte.microsoft.com/


************* IIS version ***********
Windows 9x PWS most recent version is PWS4
Windows NT4.0 IIS 2.0, 3.0, 4.0
Windows 2000 IIS 5.0
Windows XP IIS 5.1
Windows 2003 IIS 6.0
Vista???????????????