Top 20 NuGet push Packages

A client-side library for .NET that extends WebSync to provide notifications when clients subscribe to or unsubscribe from a channel. (Community Edition)
MvvmCross plugin that wraps the native Pushwoosh SDK
Catapush is a simple, reliable and scalable delivery API for transactional push notifications for applications. Ideal for sending data-driven transactional notifications including targeted e-commerce
Push Notification Service Library
http://docs.developer.qq.com/xg
A server-side library for sending Push Notifications to iOS/OSX (APNS), Android/Chrome (GCM), Windows Phone/Windows (WNS), Amazon (ADM), Blackberry and Firefox OS
This is the xamarin library for push notification in mainland china via JiGuang 極光
Receive and handle firebase push notifications across Xamarin.iOS and Xamarin.Android
Provides end-to-end push messaging functionality to your Crosslight apps. Supports iOS, Android and Windows for the client platforms and .NET 4.5 for the server platforms.
A server-side library for .NET that extends WebSync to provide optimizations for high network traffic scenarios. (Community Edition)
A client-side library for .NET that extends WebSync to provide location/user-based chat services. (On-Demand Edition)
This plugin makes it easy to register to Microsoft Azure Push Notifications from a Xamarin.Forms project and supports using Tags. The supported projects are: - Xamarin.Forms - Xamarin.Android - Windows Phone 8.1 RT - Windows Phone Silverlight - Windows Store 8 ...
Turn any pull into a push, extensible and on a schedule
Fluent scheduler for PullingHook
Receive and handle firebase push notifications across Xamarin.iOS and Xamarin.Android
Xamarin SDK For Kumulos
Push notification client and entities
Receive and handle azure push notifications across Xamarin.iOS and Xamarin.Android