Top 20 NuGet Xamarin Packages

Cross Platform Mobile Development

Package that handles scrollview in iOS applications (both 6 and 7 versions)
Xamarin bindings to the MTStatusBarOverlay. Support unified API. Support iOS9
Binding of the oficial Stripe SDK for iOS (Xamarin). Binding made using oficial repository: https://github.com/stripe/stripe-ios
Fontwesome is an Open Source Xamarin iOS library that allows developers to easily create applications with custom fonts. Feel free to use it all you want in your iOS apps provided that you cite this project and include the license in your app.
.Net Library for working with Apple *.plist files.
Xamarin.iOS-MessageBar
ForinfinityAndBeyondView is an Open Source iOS library that allows developers to easily an automatic scrolling view to their projects. Feel free to use it all you want in your iOS apps provided that you cite this project and include the license in your app
Gozer is an Open Source Xamarin iOS library that allows developers to easily create applications with custom fonts and easily works with preloaded labels.
Xamarin iOS Basic Camera Roll Multiple Image Picker Make sure to add these permissions to your info.plist <key>NSPhotoLibraryUsageDescription</key> <string>We want to use your photos</string>
Xamarin iOS binding for https://github.com/oarrabi/OAStackView, used by http://talktosomeone.net
Xamarin.iOS Binding of TTTAttributedLabel
Core of the Saitama IoC injection framework
Pre compilation task to help Localization on iOS. This will simply turn Resw or Resx file to a Localizable.strings for iOS.
Cake Build addin for Raygun.
Xamarin bindings to the native iOS Agora.io Signaling SDK.
Xamarin bindings to c++ native iOS code for helping work with Agora.io Signaling SDK.
PKHUD Xamarin port
Xamarin binding for Google iOS map utils. All the credit goes to https://github.com/NateRickard
Xamarin.iOS binding for DownPicker Objective C Library
Parallax, Sticky Headers, Growing image heading, done right in one UICollectionViewLayout.