Top 20 NuGet Windows Presentation Foundation Packages

Extends functionality of Windows Forms and Windows Presentation Foundation (WPF)
Yet another MVVM Framework.
A cross-platform mobile framework using C# .NET and Mono to create shared-code UI on iOS, Android, Windows and Webkit.
InplaceEditBoxLib provides a WPF overlay textbox control
DirectX Platform specific UI rendering ... part of effort to have cross platform UI stack based on XAML. Targets Windows 7 Desktop scenarios.
Calamara Module for Windows Presentation Foundation
Set of controls and skins for WPF applications. Demo on GitHub : https://github.com/SatsuiBird/SatsuiUiDemo
Themable user notifications WPF control through pop-up elements