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WinUI Reactor

Free#58 of 61 in Desktop App Development Frameworks

WinUI Reactor: WinUI Reactor adds hooks-based state and declarative UI composition to native WinUI 3 apps. Ranked #58 of 61 in Desktop App Development Frameworks by our editors (3.5/10); pricing: Free plan; best for C# developers building native Windows UI with WinUI 3.

3.5/10Editor score
Visit WinUI Reactor
WinUI Reactor3.5 Visit WinUI Reactor

At a glance

  • Editor score
    3.5 / 10
  • Pricing
    Free plan
  • Best for
    C# developers building native Windows UI with WinUI 3
  • Free plan
    Yes
  • Paid from
    Free
  • UI stack
    Native
  • Facts checked
    23 Oct 2026

  • Where it wins

    • Compose interfaces declaratively and update native WinUI controls.
    • Use hooks including UseState, UseReducer, and UseEffect for UI state.
    • Package apps as MSIX, unpackaged folders, or single-file bundles.

  • Where it doesn't

    • Experimental status means the API may change.
    • The verified platform scope is limited to Windows.
    • Support is through documentation and community channels.

Our verdict on WinUI Reactor

For C# developers building Windows desktop applications with WinUI 3, WinUI Reactor offers a component-based way to describe interfaces as element trees. It manages UI state with hooks and reconciles those trees to update native WinUI controls. The project is experimental, so it is a fit for developers comfortable tracking an evolving API rather than teams that need a settled framework contract. Its scope is desktop Windows, not mobile app development.

The framework’s main distinction is how it combines declarative composition with native WinUI. C# factory methods and fluent modifiers provide an alternative to constructing UI directly in XAML, while XAML and existing WinUI controls can still interoperate with Reactor. Hooks include UseState, UseReducer, and UseEffect. Support for multiple native top-level windows also suits desktop applications that need more than one window. Developers already invested in WinUI 3, XAML, and the Windows App SDK can add Reactor without giving up those technologies.

WinUI Reactor is free and open source under the MIT license, and its preview package is available through NuGet. Packaging options include MSIX, an unpackaged folder, and a single-file bundle. Documentation and community channels are the stated support routes. Those characteristics make it accessible for evaluating or adopting in projects where an experimental framework is acceptable; teams requiring a stable API or support beyond those channels should consider another approach. Its Windows-only scope also makes it unsuitable for projects targeting other operating systems.

Your product? Our editors can test WinUI Reactor in depth and publish a review, labelled as paid · from $149/mo →

WinUI Reactor pricing

Plans Free planFree Free to use — no paid tier required for the core job.
See plans on microsoft.github.io

WinUI Reactor fact sheet

Free planYes
Paid fromFree
Supported desktop OSWindows
UI stackNative
Primary languageC#
Open sourceYes
Mobile targetsNo
App packagingBoth
Commercial supportNot verified
DeploymentSelf-hosted, Desktop
PlatformsWindows
SupportDocs, Community
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations3 integrations: WinUI 3, XAML, Windows App SDK
PricingFree plan
Websitemicrosoft.github.io
Facts checked23 Oct 2026

WinUI Reactor integrations

WinUI Reactor lists 3 integrations on its own site.

  • WinUI 3
  • XAML
  • Windows App SDK

Alternatives to WinUI Reactor

See all WinUI Reactor alternatives →

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Featured on iTechGuides

Featured on iTechGuides — WinUI Reactor 3.5/10

WinUI Reactor is listed in our Desktop App Development Frameworks directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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