Load Testing Tools Directory: Automated Testing of Software and Web Site Performance
This website presents a list of load testing tools
Wikipedia defines load testing as the process of putting demand on a system or device and measuring its response. When the load placed on the system is raised beyond normal usage patterns, in order to test the system's response at unusually high or peak loads, it is known as stress testing. The load is usually so great that error conditions are the expected result, although no clear boundary exists when an activity ceases to be a load test and becomes a stress test. The term is often used synonymously with software performance testing, reliability testing, and volume testing.