NeoLoad is a load and performance testing software solution designed for web and mobile applications to realistically simulate user activity and monitor server behavior.
NeoLoad's exclusive technology allows you to perform load and performance testing more quickly, efficiently and frequently,
which means you can confidently deploy your internet, intranet or native mobile applications no matter which architecture they use, even the newest such as GWT, Silverlight, Flex and Ajax Push. With NeoLoad, the simple tasks are automated, and the difficult tasks are simple.
Check out http://www.neotys.com