The Advanced .NET Testing System consists of a number of products for testing
and optimizing applications written using Microsoft .NET technologies.
ANTS Profiler - pinpoints slow lines of code in .NET applications.
ANTS Load - predicts a web application's behavior and performance under the
stress of a multiple user load.
ANTS Load Enterprise Edition (For larger enterprises and test labs)- goes
a step further than regular ANTS Load

For more information on ANTS and other products by Red-Gate please visit:
http://www.red-gate.com/index.htm