This tool users .NET Reflection to list all properties of AutoCAD Civil 3D major objects, such as Alignment, Corridos, Surfaces, Networks, etc. It also list collections itens and allow selection of objects on screen.
Copy and paste the .bundle folder into C:\Program Files\Autodes\Application Plugins\ folder. On AutoCAD Civil 3D, mouse right-click should show the "Snoop" option.