Top 20 NuGet droid Packages

Android Search Dialog Library
Small library that provides... bouncing dots. This feature is used in number of messaging apps (such as Hangouts or Messenger), and lately in Android TV (for example when connecting to Wifi). Don't forget to add Mono.Android.Export as reference.
Android Code Highlighter. Don't forget to add "Mono.Android.Export" as reference to your solution.
A material design circle the progress bar for Android.
An Android Holo themed colorpicker designed by Marie Schweiz
An Android implementation of the Discrete Slider component from the Google Material Design Guidelines
A WebView that does not delay Activity creation, has built-in Progressbar and configurable through XML.
Android view for user input that models horizontal wheel controller.
An Android TextView, using animated color gradients.
Android library that provides an extension to ImageView that creates an immersive experience by animating its drawable using the Ken Burns Effect.
Xamarin.Android Binding for Rafael Almeida Barbosa's AchievementView, an Android library Achievement View to show message or information in your app
Library to create fully customizable Twitter Bootstrap styled alerts
Xamarin.Android Binding for ybq's SpinKit, an Android loading animations https://ybq.github.io/Android-SpinKit
Customizable circular progress indicator for Xamarin.Android
Detect most of ad blockers on Android
Android Timeline View Library (Using RecyclerView) is simple implementation used to display view like Tracking of shipment/order, steppers etc.
Binding library of de.hdodenhof.circleimageview
Super Lite Android Library to select files/directories from Device Storage.
Xamarin.Android lib to show triangle view as badge
Android loading view library