After more than eight years of development, XAML Studio has officially been open-sourced. The project is now part of the .NET Foundation as a seed project, making its source code publicly available for the community to explore and contribute to.

XAML Studio is a developer tool built for WinUI and XAML-based development. It enables rapid UI prototyping with live editing, real-time interaction, binding inspection, IntelliSense, and layout helpers, without needing to run a full application inside Visual Studio.

While the current Microsoft Store release is version 1.1, active development has continued toward version 2, which introduces a redesigned interface and several new experimental features. Version 2 can already be built from source via the project’s GitHub repository.

Several components developed for XAML Studio have also influenced the Windows Community Toolkit, including controls like SwitchPresenter, sizer-related layout helpers, and early WinUI adorner support.

Developers are encouraged to try the v2 build, provide feedback, and contribute code or documentation as the project moves toward a future stable release.

Source: Microsoft