# microsoft/microsoft-ui-xaml

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

Repository: https://github.com/microsoft/microsoft-ui-xaml
Canonical: https://ross.abutalabs.com/products/microsoft-ui-xaml
Language: C++
License: MIT
License Family: permissive
Topics: desktop, windows, xaml, fluent-design, csharp, cpp, windows-10, uwp, winui, winui3
Last push: 2026-08-26T22:51:22+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 2960, "days_push": 7, "days_rel": 20, "gap_med": 12, "n_releases_24m": 32}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7928, forks 894 (observed 2026-08-28T04:10:09.870462+00:00)

## What it is
WinUI is Microsoft's modern UI framework providing Fluent Design controls and styles for building Windows applications, with WinUI 3 shipping as part of the Windows App SDK. It supports development in C# (.NET) or C++ targeting x86, x64, and ARM architectures.

## Use cases
- build a modern Windows desktop app with Fluent Design
- create native Windows UI with XAML and C#
- migrate a UWP app to Windows App SDK
- build high-performance Windows apps in C++
- add modern controls and styles to a Win32 application

## When to choose
- building Windows-only desktop applications with a modern native look
- you want Fluent Design controls backed by Microsoft support
- developing in C# or C++ for Windows 10 1809 or newer

## When to avoid
- you need cross-platform UI (Windows, macOS, Linux) - consider Avalonia, Flutter, or .NET MAUI
- targeting older Windows versions before 10 1809
- building web or mobile applications

## Facets
- artifact type: framework
- maturity: active
- function: ui-components, frontend-framework, desktop-framework
- domain: web-development, desktop-applications, cross-platform
- platform: windows, cpp, dotnet
- tags: winui, xaml, fluent-design, uwp, windows-app-sdk, microsoft

## Member repositories
- microsoft/microsoft-ui-xaml (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:09.870462+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:33:15.329463+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/microsoft-ui-xaml (fetched 2026-08-28T04:10:09.870462+00:00, sha 8aeb0d968d56)
- Data as of 2026-08-30T08:39:29.467469+00:00.