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This section covers the APIs, features, and platform capabilities for building Windows desktop apps. You can build new apps with WinUI 3, modernize existing desktop apps, or integrate on-device AI capabilities like language models, text recognition, and image processing.
Features come from the Windows App SDK, the Windows SDK, and .NET. For release notes and what's new, see Windows App SDK release channels.
Get started with developing your Windows app
Windows app platform
The Windows app platform provides features and APIs for building Windows desktop apps.
Package and deploy
Package your app with MSIX and deploy it to users.
API reference
Browse the API reference for every Windows App SDK namespace and feature.
Tools and samples
Tools, samples, and AI-powered resources for building Windows apps.
What's new in the Windows App SDK
See the latest features and updates in the Windows App SDK.
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.
Windows developer