Load/Stress test my Web application

[Raghavendra Kulkarni]

I have created web application using JSP, which uses Apache Tomcat integrated with IIS.
I want my test my WebApplication to find how many concurrent users it supports?
As I can not afford to buy Web testing software, Can anybody suggest me Web Test tool which is Free?
Thanks in advance
Raghavendra

[Reid M. Pinchback]

http://jakarta.apache.org/jmeter/

[Graham Thorpe]

and also www.pureload.com

[John Dahlstrom]

OpenSTA
It has its own scripting language. It shouldn't take a programmer too long to learn. You are able to validate pages fairly easily with this tool, so you can actually check that the correct pages and content are loading during the load test.
And it has its own forum on qaforums.com
[ March 11, 2003: Message edited by: John Dahlstrom ]

[Chris Mathews]

Check out The Grinder. It is an Open Source Load Testing Framework.

[Kripal Singh]

try http://www.paessler.com/webstress
[ March 13, 2003: Message edited by: Kripal Singh ]