Windows UI Library VS office-ui-fabric-react

I wish that was true, but even the new stuff, like their new frameworks, performs poorly while their older frameworks perform really well. That's brand new code, with no legacy codebase to care for.

The reason why I don't recommend Winui is the million bugs it has. See the github issues page. All Microsoft ui stuff sucks currently. But if you use WPF why not FluentWPF

Development for WinAppSdk and WinUI 3 is also very slow and Microsoft seems to not want to push it and invest more developers into it for some reason. They try to improve the framework, is just it's a small team. For example it was a headacke to apply the Mica backgrop and required unmanaged code, they made it simpler and reduced it to a line of code but it took months. I have 2 out of 7 issues fixed on WinAppSdk repository and 0 out of 8 issues fixed in the WinUI 3 repository (some of the older than a year). This are just my issues, there are many other opened by other developers. So yeah, it wasn't fun at all. PoweshellSDK had an issue with the Import-Module command and it wasn't fixed for more than a year and probably won't be ever fixed, but I'm glad I found a workaround, even more clean and more safe, otherwise I couldn't have added the posibility to uninstall and change Store apps.

Compared to UWP or WPF, WinUI 3 is somewhere between 100-200% slower and consumes 7-20 times as much RAM as the old frameworks (for certain operations).

For example, all the following design systems can be used without tooling (some of them provide ready-to-use bundles, others can be used through import maps): Google's Material Web, Microsoft's Fluent UI, IBM's Carbon, Adobe's Spectrum, Nordhealth's Nord, Shoelace, etc.

We are migrating to Fluent v9, which has notable performance benefits with CSS-in-JavaScript. More information on React Fluent UX can be found at https://react.fluentui.dev.

Storybook Github Figma Specs Documentation [Component Roadmap]

fluentui/packages/react-components/react-button/stories/Button at master · microsoft/fluentui (github.com)

First, we recommend folks checkout our latest update on the Component Lifecycle Process and our Component Roadmap as it's been updated for FY23Q2.

This is just an overview of the general process and requirements, but if you want to get into some of the details, check out the work that's gone into the Card component epic.

https://github.com/microsoft/fluentui/wiki/Fluent-UI-React-Roadmap

Hooks, Charts, etc everything