microsoft/WindowsAppSDK
The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet. observed · 2026-08-28
Health v2 · maintenance only
98/100
- Activity 99
- Release rhythm 97
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 9
- age_days: 2331
- days_rel: 20
- days_push: 7
- n_releases_24m: 40
Adoption not part of the score
4665 stars · 461 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Windows App SDK (formerly Project Reunion) is a Microsoft SDK that brings modern Windows platform APIs, WinUI 3, and Fluent Design UI to desktop apps built with Win32, WPF, WinForms, or .NET/C++. It ships via NuGet and supports Windows 10 1809 and later, including local AI/ONNX model APIs on Copilot+ PCs.
Use cases
- build a modern Windows desktop app with WinUI 3
- add Fluent Design UI to an existing WPF or WinForms app
- run ONNX AI models locally on Windows
- use modern Windows APIs while supporting Windows 10 1809+
- distribute a desktop app without requiring MSIX packaging
- create accessible native Windows UI in C# or C++
When to choose
- building new Windows desktop applications with modern UI
- modernizing existing Win32, WPF, or WinForms apps with current APIs
- you need back-compat across Windows 10 and 11 versions
- you want local, hardware-accelerated AI features on Windows
When to avoid
- targeting non-Windows platforms exclusively
- building UWP-only or mobile apps
- you need a cross-platform UI framework like Flutter or Electron
- your app must run on Windows versions older than 10 1809
Facets
framework · maturity active
ui-components mobile-framework sdk machine-learning desktop-applications web-development developer-tools windows windows cpp dotnet cross-platform winui3 win32 wpf winforms fluent-design nuget project-reunion msix windows-11 onnx
3 sources
- readme: https://github.com/microsoft/WindowsAppSDK · fetched 2026-08-28 · c338ec2711c1
- homepage: https://docs.microsoft.com/windows/apps/windows-app-sdk/ · fetched 2026-08-29 · 4f7dcfabdb3e
- site_page: https://learn.microsoft.com/en-us/lifecycle/faq/internet-explorer-microsoft-edge · fetched 2026-08-29 · c363b2f43d4b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| microsoft/WindowsAppSDK | main | 98 |
For agents
markdown · JSON · MCP: product_card(name="microsoft/WindowsAppSDK")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem