Top 20 NuGet xamarin Packages

A minimalistic and fast JSON parser/deserializer. Mobile versions for Android and WP8.
Scaffolding entry forms for Xamarin.Forms projects
P/Invoke wrappers around Mozillas mozjpeg for .NET and Xamarin
P/Invoke wrappers around Mozillas mozjpeg for .NET and Xamarin
EditText implementation where the hint floats above the EditText when editing.
Simple platform independent timer for iOS and Android (Xamarin)
Tesseract OCR for Xamarin and Xamarin.Forms.
Fontysfaction is an Open Source Xamarin Android library that allows developers to easily create applications with custom fonts. Feel free to use it all you want in your Android apps provided that you cite this project and include the license in your app.
Neverendingview is an Open Source Android library that allows developers to easily add a neverending scroll view to their projects. Feel free to use it all you want in your Android apps provided that you cite this project and include the license in your app.
Xamarin binding for Smaato mobile advertising platform, used by http://talktosomeone.net
Enables Bonjour/DNS-SD Discovery for Peer-to-Peer Couchbase Lite applications.
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.
The presentation user interface library for the "More" framework.
Xamarin.iOS-MessageBar
Binding project https://github.com/tomknig/TOMSMorphingLabel for Xamarin.iOS. Supported for iOS 8.0 and greater.
Xamarin plugin which gets the local path location for a database file on Android and iOS. This plugin abstracts the platform specific ways in which you derive the local filepath to store data on the phone.