Top 20 NuGet appstore Packages

Easily detect if you are running the latest version of your Xamarin or UWP app and open it in the App Store, Play Store or Microsoft Store to update it.
Library for validating receipts with the App Store
CrossPlatformLibrary.Market is a plug-in for accessing platform-independent app market functionality.
This will add WIF configuration required for AppStore identity integration
AppStoresScraper is library for downloading app metadata from Steam, Google, Apple and Windows app stores
Notify user when a new version of your app is available.