Top 20 NuGet xamarin.forms Packages

Simple package that allows you to create a CardView in Xamarin.Forms projects for the three platforms (Android, iOS, UWP)
OAuth2 webauthenticator for Xamarin.Forms.
Xamarin.Forms Picker component with support for bindings. Usage: ... xmlns:bp="clr-namespace:Xamarin.Forms.BindablePicker;assembly=Xamarin.Forms.BindablePicker" ... <bp:BindablePicker ItemsSource="{Binding Items}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" ...
Xamarin.Forms Custom Layouts(WrapLayout, RepeatableWrapLayout, RepeatableStackLayout, RepeatableFlexLayout)
This helper class allows you to invoke RESTful services with JSON response type with ease.
KAMISHIBAI for Xamarin.Forms is the most flexible page navigation framework. KAMISHIBAI for Xamarin.Forms supports MVVM Pattern.
Logging Plugin for Xamarin provides a consistent, cross platform logging plugin on Android and iOS.
See your Xamarin Forms XAML interface changing instantaneously just on save the file, without wasting time building the project every time. \o/
A simple MixPanelHttpClient for C#
ViewPagerForms
This is a Ninject MvxIoCProvider for MvvmCross.
An API for accessing Plex Media Servers and the connected clients. This requires a PlexPass subscription to work correctly.
A set tools provided by Caeno to ease development of Xamarin.Forms Applications.
Xamstrap for Xamarin.Forms is a toolkit to create a responsive layout for mobiles and tablets(Android/iOS).
A helper library of BindingConverters, MarkupExtensions, and other utilities for building XAML applications on platforms that support Xamarin.Forms.