Top 20 NuGet forms Packages

CodeBrix is a comprehensive rapid-application development (RAD) platform for quickly creating apps for iOS, Android and Windows (UWP); and is based on Xamarin.Forms and Prism.
A files library for xamarin forms
Simple package that allows you to create a CardView in Xamarin.Forms projects for the three platforms (Android, iOS, UWP)
Xamarin Dynamic Forms
This package, built on top of the original Active Directory Authentication Library (ADAL), makes extremely easy to authenticate users inside your Xamarin projects. You only need 1 line of code!
Color picker for Xamarin.Forms. It can be used as a large color mixer control (ColorPickerMixer) or as a dialog for select a color (ColorPickerDialog) or as an entry editor (ColorPickerEntry) of hexadecimal value with preview of a color and option of launch a dialog with color mixer.
ClassicForms (For Bridge.Net) - Create a Windows Application using ClassicForms UI and Bridge for the Browser..
A light-weight and easy to use cross-platform audio recorder for Windows UWP, Xamarin.iOS, Xamarin.Android, Xamarin.Mac, and Xamarin.Forms.
A ReactiveUI navigation library for Xamarin.Forms
Some useful code from book by Jacek Matulewski
Forms binding library for Bridge.NET projects.
StepProgressBar Control for Xamarin.Forms
Plugin to create a Modal Popup View Release Notes: https://github.com/get-spiffy/Spiffy.Plugins.Popup/releases
Manage the sound on your device with a mvvmcross plugin.
Create Horizontal and Vertical carousels, add page indicators, navigation arrows and much more. “How to” at Github repository.
Segmented Button Control for Xamarin.Forms (Android, iOS, UWP) with awesome features, such as dynamically adding or removing Tab Button elements, setting Colors, and Selected Index at run time with full native look and feel. Built from pure Xamarin.Forms, lightweight, no custom renders nor platform ...
This provides a MVVM layer for Xamarin forms Tools extensions View models abstraction Error management Navigation VM to VM IoC registration
Just a nice and SimpleColorPicker for your Xamarin Forms project.
A core componenets for MaterialKit. It'll be added later.
A backdrop page like below: https://material.io/design/components/backdrop.html It supports Android and iOS under Xamarin Forms