Wait, what?! These examples run in the browser? This rust library is atop GPUI which is already well used for native apps, but outputs primarily / only (I'd guess only?) web apps? And they are real web apps, with html, unlike the Flutter abomination?
You might also find Yew, Leptos an Dioxus interresting... they're web UI frameworks for browser applications written in rust... with some options for native(-like) application targets.
It's remarkable to me that this web toolkit is atop GPUI, which is a native app rust toolkit! We don't have a ton of cross native/web libraries, afaik! https://gpui.rs/
Flutter does both, but Flutter does it by being a giant canvas with its own drawing engine. It's awesome-sauce to see such a more harmonious path.
Different topic but I'd done a little playing around with trying to write a HTML front end that could drop in to opencode 's opentui library. The cross-modal UI is a fun idea to me!
as for compiling to HTML, it unfortunately renders in a HTML <canvas>, which was how Flutter rendered in the web :( but I can only hope it compiles to that in the future!
This is sick. This is so rad, heck yes.