Darling is a lot like Wine only for macOS.
It implements a complete Darwin environment, runs macOS software directly without requiring a hardware emulator, and aims to integrate apps into the Linux desktop experience.
The only downside is they haven’t quite gotten GUI apps working yet:
This took us a lot of time and effort, but we finally have basic experimental support for running simple graphical applications. It requires some special setup for now though, so do not expect it to work out of the box just yet. We’re working on this; stay tuned!