Any chance someone knows what was `Jetbrains Fleet`'s UI done in? Compose for Desktop? I heard there is

Skia

, soo maybe?

Yeah, it is skia/skiko. Compose Desktop wasn't available at this time.

But compose deskop uses skia at the bottom?

yes

hmm, question, I thought skia was a graphics library (basically canvas calls) not necessarily a UI library? And therefore for UI they used what, swing or something?

Fleet uses a UI Toolkit called Noria, built by Jetbrains. It's indeed built on top of Skia.

https://github.com/eirikb/FleetUI/tree/main/app has some code that builds with Noria widgets

Last time I looked inside Fleet’s jar files it was full of Noria sample files :D