WMI Code Creator is a great tool for exploring and working with Windows Management Instrumentation. Not only does it allow you to browse the name spaces but it also generates code in VBSCript, C# or VB.NET that you can use in your projects. The download includes the full source code (~10.000 lines of C# code)
Using the tool, you can query for management information such as the name and version of an operating system, how much free disk space is on a hard drive, or the state of a service. You can also use the tool to execute a method from a WMI class to perform a management task. For example, you can create code that executes the Create method of the Win32_Process ...