Microsoft has moved WinUI development to GitHub, part of a years-long effort to open up its Windows developer technologies. The change marks a structural shift in where the code behind Windows app interfaces lives and how the community can engage with it.
What changed about WinUI development
According to the report from Thurrott.com, Microsoft relocated WinUI development onto GitHub as part of its broader effort to open up Windows developer tools. In practical terms, the development activity and codebase for the Windows User Interface framework now resides on the platform developers already use for tracking issues and collaborating.
The announcement itself is understated, but this represents a meaningful change in where development happens rather than a new feature shipped inside the framework. Developers should expect the process to become more visible going forward.
The broader push to open Windows dev tools
This isn’t the first time Microsoft has migrated a Windows developer project to GitHub. Over the past several years, the company has steadily moved its dev toolkit to the platform, including the Windows App SDK and related open-source efforts.
WinUI is tightly coupled with the Windows App SDK (WASDK), which is itself open-sourced and hosted on GitHub. The App SDK bundles WinUI 3, WebView2, and a suite of native Windows capabilities that supersede the older Universal Windows Platform (UWP).
What WinUI and the Windows App SDK actually are
For readers who aren’t deep in Windows development terminology, WinUI is Microsoft’s modern native UI framework for building Windows apps. The latest version, WinUI 3, shipped as part of the Windows App SDK rather than riding on a full Windows OS feature release like earlier iterations.
The Windows App SDK gives developers access to native Windows features—system tray, notifications, and modern controls—without the heavier constraints of the UWP model. That separation of the UI layer from the OS has shaped Windows app development for years.
What this means for Windows developers
Moving development to GitHub typically improves transparency. Developers can often track issues, watch repositories, and sometimes contribute directly to open-source Windows projects.
For the Windows dev community, this kind of migration usually means easier access to changelogs, community discussion, and a clearer view of where the framework is heading. It also aligns with Microsoft’s long-standing direction toward more open, community-involved development.
What This Means for You
For everyday Windows users, the impact is indirect but real. WinUI powers the look and feel of native Windows apps, so development changes can eventually shape how apps look and behave on your machine.
Developers building for Windows should watch the official repositories and Microsoft’s dev channels for any updates about how they interact with the new GitHub-hosted development.
How to follow the changes
If you’re a Windows developer, head to Microsoft’s GitHub organization to follow the WinUI and Windows App SDK repositories. Keep an eye on the official developer blog for announcements about new capabilities or migration steps.
Source: Thurrott.com
Over to you: Are you excited about more open WinUI development, or do you worry it’ll reduce Microsoft’s control over the framework?
