Prusa and Cura are available on flathub and work fine. AFAIK Orca isn't in the main repo but the flatpak is on their github and works fine for me too.
Orca works just fine on Linux, probably even better than on Windows/macOS, which are a slightly neglected platforms from a dev's perspective.
This is my experience. I do CAD in Windows, but Orcaslicer only works properly in Linux. On Windows, it tends to crash when I tell it to generate gcode for anything but the smallest prints.
Just as well, really. It reminds me to reboot, so I haven’t tried to fix it.
My experience with Orca on Windows is the same. Any complex model causes bedshitting, and I've tried basically all of the solutions suggested on their issue tracker. I had mild success with affinity tweaking (ie forcing the slicer to only use real cores. not hyperthreads) but it's still hitting a ceiling.
At home where I'm running linux, Orca is perfect.
Both slicers work fine but there are some dpi scaling issues in my experience (both Orca and Prusa) on 4k monitors.
I prefer Cura and it has native binaries and Flatpak.
I just installed orca yesterday! The appimage mostly worked, but it wouldn't actually slice. I removed that, and found it in AUR, installed that version, and it's been working great. It doesn't support my printer, so I can't print directly, but I can save the stl file and then copy that over to print. I made a small plaque yesterday and printed it, and everything worked fine. (Garuda Linux, Arch derivative).
There is a Flatpak as well which is working really well. I had some issues with the app image in the past
I looked for the flatpak in discover, but didn't find it. I didn't bother looking further than that.
Its not in Flathub. You need to download the Flatpak file from GitHub
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