Top 20 NuGet XAML Packages

Base classes for ShowMeTheXAML. This contains the basic control. If you are wanting to add this to your own project use ShowMeTheXAML.MSBuild.
Naylah.Xamarin is a Xamarin App Toolkit, Lib, Module, etc.
IconPacks for stylish awesome WPF or UWP apps.
IconPacks for stylish awesome WPF or UWP apps.
IconPacks for stylish awesome WPF or UWP apps.
IconPacks for stylish awesome WPF or UWP apps.
A set of controls for WPF and UWP for rendering digital maps from different providers (like OpenStreetMap and Bing Maps) and various types of map overlays.
A simple child window for MahApps.Metro, the "Metro" or "Modern UI" for WPF4+ apps.
Use these extensions to build Prism applications based on Autofac.
Add property notification to all classes that implement INotifyPropertyChanging.
ControlzEx
Fody add-in for creating dependency or attached properties from auto properties.
New Easy MVVM Framework. More agile development.
A Prism Autofac implementation with module support
Fody add-in for validation in XAML bindings.
DevForce takes care of your application's infrastructure-the gap between your data-layer and client-layer where the difficult job of turning raw data into business objects and moving them to and from the client's screen takes place. DevForce fills this gap so you don't have to. Instead of building, ...
Use these extensions to build Prism applications based on DryIoc.
"loose" file XAML Resource for Metro UI's. All icons taken from "Modern UI Icons" created by Austin Andrews http://modernuiicons.com https://github.com/Templarian/WindowsIcons
Contains a Markdown parser that can generate HTML, XAML and text. Syntax supported: https://waher.se/Markdown.md
Styles implementing AdonisUI's theme definitions to provide classic look and feel.