How to: View the Contents of the Global Assembly Cache
Use the Global Assembly Cache tool (Gacutil.exe) to view the contents of the global assembly cache.
To view a list of the assemblies in the global assembly cache
At the command prompt, type the following command:
The Windows Software Development Kit (SDK) also provides a Windows shell extension called the Assembly Cache Viewer (Shfusion.dll), which you can use to view the contents of global assembly cache.