All developers write bugs. The tools that we use to figure out what went wrong are a big part of our tool kit. Visual Studio has powerful debugging tools built in, but sometimes what is provided in the Visual Studio box isn't enough. For those situations, there are many tools available, but Fiddler and Silverlight Spy are incredibly important tools.
Fiddler acts as a web proxy to inspect network traffic. This is a tool that a lot of web developers and Silverlight developers depend on to get the network traffic right. This tool can be found at the following URL:
To make Fiddler work with the Windows Phone 7 emulator, follow the instructions found on the following blog entry: