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An open-source IDE for C# and .NET, built with Avalonia, for Windows, macOS and Linux: a Roslyn-powered editor, its own debugger with Hot Reload, a CPU and memory profiler, XAML tooling for Avalonia and WPF, and an MCP server for coding agents.

WinUI: a modern UI framework with a rich set of controls and styles to build dynamic and high-performing Windows applications.

Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single C#/XAML codebase. Work from any IDE/CLI with Hot Reload, Visual Designer, MCPs, and Skills built for modern .NET workflows. 200M+ NuGet downloads.

The XAML SDK is an easy-to-use infrastructure with 1000+ developer focused examples for most of the Telerik UI for WPF controls.

A small, yet powerful framework, designed for building applications across all XAML platforms. Its strong support for MV* patterns will enable you to build your solution quickly, without the need to sacrifice code quality or testability.

Google's Material Design in XAML & WPF, for C# & VB.Net.

Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..

This is the official home for WinUI/UWP XAML Behaviors on GitHub.

A collection of .NET libraries for rendering mathematical formulae using the LaTeX typesetting style, for the WPF and Avalonia XAML-based frameworks

Home for WPF XAML Behaviors on GitHub.

A WPF component making it easy to show the corresponding XAML for WPF custom styles and controls

The lightweight XAML Islands toolchain with the Windows 11 controls styles.

The third-party lightweight XAML-based out-of-box-experience oriented Hyper-V virtualization software based on Host Compute System API, Remote Desktop ActiveX control and XAML Islands

Lightweight file transfer utility based on aria2 and XAML Islands

Cross-platform UI framework for Rust: styled property system, data binding, XAML, control themes and a composition renderer. A port of Avalonia.