Windows Calculator: A simple yet powerful calculator that ships with Windows

Avalonia is a cross-platform XAML-based UI framework providing a flexible styling system and supporting a wide range of Operating Systems such as Windows via .NET Framework and .NET Core, Linux via Xorg, macOS

A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.

The Windows Community Toolkit is a collection of helper functions, custom controls, and app services. It simplifies and demonstrates common developer tasks building UWP apps for Windows 10. The toolkit is part of the .NET Foundation.

All the controls missing in WPF. Over 1 million downloads.

A modern file explorer that pushes the boundaries of the platform.

Contains some simple and commonly used WPF controls

The mobile app vault (iOS and Android).

Windows Template Studio quickly builds a UWP app, using a wizard-based UI to turn your needs into a foundation of Windows 10 patterns and best practices.

Xamarin.Forms goodlooking UI samples

WPF Ribbon control like in Office

Making Windows 10 apps great again

Modern styles and controls for your WPF applications

This repo contains the source code for Telerik UI for Universal Windows Platform (UWP), which includes 20+ UI controls for developers building UWP applications.

Awesome icon packs for WPF and UWP in one library

Cross platform IDE and Shell

A new way for developers to exchange card content in a common and consistent way.

Fluent Design System for WPF.

This app demonstrates the controls available in WinUI and the Fluent Design System.

Lightweight UI toolkit for WPF applications offering classic but enhanced windows visuals

WPF for JavaScript

ReactiveProperty provides MVVM and asynchronous support features under Reactive Extensions. Target framework is .NET Standard 2.0.

Shared Controlz for WPF and ... more

Toast notifications for WPF allows you to create and display rich notifications in WPF applications. It's highly configurable with set of built-in options like positions, behaviours, themes and many others. It's extendable, it gives you possibility to create custom and interactive notifications in simply manner.

Visual Studio extension to help format your XAML source code

Material Design Extensions is based on Material Design in XAML Toolkit to provide additional controls and features for WPF apps

The Fluent Design XAML theme editor.