What is a nupkg file and how do I open a nupkg file?
NUPKG files are used by NuGet, an extension for Microsoft Visual Studio that provides an interface for managing third-party libraries for NET projects. They contain packaged source code that can be used for developing program components. NUPKG files are built from NUSPEC files, which themselves are built from DLL assemblies.
Relevant nupkg file links:How to open nupkg file on Youtube
How to open nupkg file on Wikipedia
How to open nupkg file on Microsoft.com