Flatcam for making pcbs. For milling copper.

flatcam repo

Any alternatives or forks?

Nice. I love this project. Its much much better then wined(wine implementation), but I agree with wine philosophy. Opengl for more devices support was a good choice. Waiting for wine vulkan and wayland implementations.

Proton already uses esync & fsync to get about the same resuts.

Correct me if I am wrong, but esync and fsync have compatibility issues with some games and this is the biggest problem.