RockStar Web Profiler(codename "Razor") is an HTTP debugging proxy combined with a client side performance probe and a JProfiler-like JavaScript profiler. Putting server side, network and client side performance together, Razor Web Profiler gives you three-dimensional insight into your application:

* Where time is spent: server, network and client-side
* HTTP traffic details and graphs show how many resources are used.
* Page rendering breakdown shows where time is being spent through the complete page loading lifecycle.
* Deep JavaScript profiling contains callstack, total duration and function counters.