What is Nuget Package Explorer?
NuGet Package Explorer (NPE) is an application that makes it easy to create and explore NuGet packages. You can load a . nupkg or . snupkg file from disk or directly from a feed such as nuget.org. To build packages from the command line, use NuGet command-line tools, as documented on the official NuGet site.
Also, what are NuGet packages?
NuGet is a free and open-source package manager designed for the Microsoft development platform (formerly known as NuPack).