ClrDbg
Tool for opening dmp files for .NET applications.
ClrDbg can open a dmp file, or connect to a running process, and display information about the objects on the heap and their class information (such as field definitions and method signatures), threads and their call stacks. ClrDbg uses the Microsoft.Diagnostics.Runtime.dll (ClrMD).
The user-interface allows the user to drill-down by clicking on hyperlinks in a grid view.