1)   WAPT 5.0
WAPT is a load and stress testing tool for websites and web-based applications. Testing of dynamic web applications, recording and playback of HTTPS requests, and several authentication schemes are supported. Descriptive graphs and reports.

 2)   Webserver Stress Tool 7.1.1.229
Webserver Stress Tool is a powerful HTTP client/server test application, designed to pinpoint critical performance issues in your web site or web server that may prevent optimal experience for your site's visitors. Supports SSL.

 3)   WebPartner Test and Performance Center 3.00.308
Performs scheduled Stress and Load Testing by executing multiple HTTP/HTTPS/XML/SOAP web transactions simulating your customer's actions. Critical performance data is captured and results are graphically reported via online display or email.

 4)   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.,

 5)   vPerformer 1.0
vPerformer can be used assess the performance and scalability of web applications. vPerformer reveals the behavior of your web application when it is subject to a large load.