Top 20 NuGet location Packages

A library to make things cross-platform that should be
Google Places, Maps, Roads, Search and Translate. Requests and Responses are complete with Google api documentation and references.
The library provides an abstraction over IoC containers and service locators. Using the library allows an application to indirectly access the capabilities without relying on hard references.
ArcGIS Runtime controls and utilities for Xamarin.Forms apps (Android, iOS, and UWP).
Unity Service Location
ArcGIS Runtime SDK for .NET enables you to add powerful mapping and spatial capabilities to your Windows Presentation Foundation (WPF) apps. Use a wide range of mapping and GIS tasks online and offline, including data visualization, editing, geocoding, and routing.
ArcGIS Runtime SDK for .NET enables you to add powerful mapping and spatial capabilities to your Windows Presentation Foundation (WPF) apps. Use a wide range of mapping and GIS tasks online and offline, including data visualization, editing, geocoding, and routing.
Class library adding support for the Personal Eventing Protocol (XEP-0163) to the XMPP Client library defined in Waher.Networking.XMPP.UWP. Other related extensions supported include: XEP-0080: User Location XEP-0084: User Avatar XEP-0107: User Mood XEP-0108: User Activity XEP-0118: User Tune
Class library adding support for the Personal Eventing Protocol (XEP-0163) to the XMPP Client library defined in Waher.Networking.XMPP. Other related extensions supported include: XEP-0080: User Location XEP-0084: User Avatar XEP-0107: User Mood XEP-0108: User Activity XEP-0118: User Tune
Simple platform independent location manager for iOS and Android (Xamarin)
The Boerman.FlightAnalysis package contains algorithms to analyze flight movements and extract information like departure time and airfield, arrival time and airfield, total air time and more.
A C# class library that will calculate distance and cardinal direction between two sets of coordinates and provides the lat/long boundaries around an origin coordinate allowing for simple SQL or LINQ selection of locations within the given radius.
Xamarin wrapper for the Bluedot PointSDK.iOS
ArcGIS Runtime controls and utilities for Universal Windows Platform (UWP), Windows Presentation Foundation (WPF), Xamarin.Android, and Xamarin.iOS apps.
ArcGIS Runtime SDK for .NET enables you to add powerful mapping and spatial capabilities to your Xamarin.Forms Android, iOS, and UWP apps. Use a wide range of mapping and GIS tasks online and offline, including data visualization, editing, geocoding, and routing.
The ViaCEP WebService client for .NET projects
ArcGIS Runtime Hydrography extends ArcGIS Runtime SDK for .NET with support for Electronic Navigational Charts (ENCs) for your Windows Presentation Foundation (WPF), Universal Windows Platform (UWP), Xamarin.Android, Xamarin.iOS, and Xamarin.Forms (Android, iOS, and UWP) apps.
ArcGIS Runtime SDK for .NET enables you to add powerful mapping and spatial capabilities to your Universal Windows Platform (UWP) apps. Use a wide range of mapping and GIS tasks online and offline, including data visualization, editing, geocoding, and routing.
Operations and data types used with the ArcGIS REST API.
ArcGIS Runtime SDK for .NET enables you to add powerful mapping and spatial capabilities to your Xamarin.Android apps. Use a wide range of mapping and GIS tasks online and offline, including data visualization, editing, geocoding, and routing.