TeaVM + Flavour makes a superior alternative to Blazor.

* TeaVM supports threads, Blazor does not.

* TeaVM apps can start in 3s, Blazor apps cannot.

* TeaVM eliminates unused code for fast startup, Blazor is architecturally limited to download an entire VM at startup.

Details: https://frequal.com/java/TeaVmVsBlazorWasm1-0.html

Comparison chart: https://frequal.com/java/TeaVmVsBlazorChart.html

I always thought of TeaVM as a toy project, but boy, was I wrong!

Yes, you could describe it that way, I suppose. TeaVM is just the "VM" part of it. The developer has a "sister" project called "Flavour" that provides a UI framework. https://github.com/konsoletyper/teavm-flavour