Xamarin.AndroidX.Migration by: Microsoft

This package provides a set of tools and MSBuild tasks to aid in the migration from Android Support to Android X.

Xamarin.Build.Download by: Microsoft

Support for downloading and unpacking archives when building MSBuild projects

XmpCore by: Drew Noakes

.NET library for working with the Extensible Metadata Platform (XMP) This library is a port of Adobe's Java XMP SDK to .NET. It was initially ported by Yakov Danila and Nathanael Jones. Now maintained by Drew Noakes and contributors on GitHub. The API should be familiar to users of Adobe's XMPCore, though it has been modified in places to better suit .NET development.