Look at the emerging WASM projects such as Blazor or Ooui. The obvious path seems to be to have a strong HTML based suite, i.e Kendo, ported to Blazor. However another option would be to improve the Xamarin forms components to have comparable functionality to their desktop counterpartys so they can be used in LOB applications under Ooui. The current Xamarin components are too mobile centric. A third option, which admittedly seems like a bit of a long shot at present, would be to take Moonlight, strip out the plugin stuff, strip out all but the layout code, and redo that to write to an HTML Canvas. Now that's probably outside your scope although in my opinion its the most attractive of the 3 options. In summary I suggest you look at providing a full featured UI component suite that runs under wasm.