1)   JBlitz Professional 5.0
Load, performance and functional testing for all your web software components. Simulates heavy load with multiple concurrent virtual users. Automatic response validation. Fully featured - logging, graphs, stats, SSL, proxy support etc. Full Java API.
test, stress, load, stress test, load test, performance, tool, web, internet, URL,

 2)   AdventNet QEngine WebTest 5.4
AdventNet QEngine WebTest - An extensive, platform independent Web testing tools used for Web Functionality testing and Web Performance testing of Web applications developed using HTML, JSP, ASP, .NET, PHP, JavaScript/VBScript, e-commerce, etc.,
Load Test, Load Testing, Web Performance Testing, Web Functional Testing, Distributed Load Testing, API Testing, Web Testing, Web Application Testing, Record and Playback, Functional Testing,

 3)   WinFeedback 4.0
WinFeedback is a Windows scripting extension for testing, monitoring and automation purposes, like response timing, up-timing, functional testing, stress testing, health monitoring, task automation.
windows, performance, software, testing, quality, responsetime, testing, monitoring, automation, tools,