Top 20 NuGet Windows Presentation Foundation Packages

Library that helps to create single instance WPF application for .NET 4.5.
Dockable desktop window and other classes supporting WPF applications. Sample WPF projects available at BitBucket, see project link.
This is a modified version of MahApps.Metro specifically for Explore10
WPF MVVM Framework
Library that helps to create single instance WPF application. Supports .NET 3.5/4.0/4.5/4.6.
WPF Vertical Text Control Library
WPF.Notifier shows one or more toastnotification-windows. Besides it's possible to show your own window with your viewmodel as a toastnotification. (I)NotifierManager should be a Singleton, if you use it from different classes, because all notificationwindos are saved internally and removed after ...
WPF frame navigation helper framework
This is a set of commonly used WPF Converters, from the Coolblue OSS Team.
WPF Circular Gauge based on the EvelynT code found at
Converters for WPF
A WPF window host.
An experimental library which enables points, sizes and rectangles to be stored in and manipulated via distinct types depending on whether they are in screen or WPF coordinate space, thus avoiding confusion and aiding readability. Also provides utility methods related to screen bounds, resolution et...
A docking library to integrate undo/redo-able tabbed docking, floating and auto hide window management into your application in minutes.
CreativeXamlToolkit is a tiny library containing custom controls for WPF & UWP application.
The Cross-platform XAML Framework
Small toolkit for WPF applications using MVVM pattern.
Extension of SwollenMvvmToolking.Core to integrate with Calibur.Micro framework.
SharkEx Physics Engine for WPF Apps
Implements a number of things oddly missing from WPF, as well as some helpers for writing WPF apps that are not pure MVVM.