NuGet package UrhoSharp vs UrhoSharp.Forms

Hello,

All UrhoSharp.xxx NuGet packages info tells the same thing.
Does anybody knows the difference between UrhoSharp, UrhoSharp.Forms, UrhoSharp.Tools, etc?

I want to show a 3D scene on a Xamarin.Forms project. Should I install UrhoSharp or UrhoSharp.Forms NuGet packages?

There are no more update since Dec 2018. Is UrhoSharp deprecated or still living?

Regards,