I have being using the Linux build of Carbide Motion on Linux Mint 22.1 for a few projects now and it’s worked great. Everything worked as expected (visualization, zeroing, tool changes, and running the job).
I am using a Shapeoko 3 XXL with HDZ, Bit Zero v1, and Bitsetter. PC is a Dell Optiplex 3050 micro PC with an i5-7500T, 8GB of RAM, 256GB SSD. Started with a 20" 1680x1050 monitor (in portrait orientation, so display was actually 1050x1680), this weekend I upgraded to a 15.6" 1920x1080 touchscreen monitor (in landscape). Carbide Motion performance is good, the UI is responsive and the touch controls are easy to use.
I would personally prefer AppImage for the distribution instead of FlatPak. I like the ease of a single download that you can run without any extra installation, and I also like the future proofing of being able to hold onto that download forever and it should just work. I primarily use AppImages for Linux applications when I can (LightBurn, gSender, Bambu Labs Studio, cncJS, etc).
Hopefully Carbide Create makes its way to Linux at some point too. I run CC through wine on my main desktop and the graphical/UI quirks of wine does leave a little to be desired (the limitations of the file open dialog being the most glaring deficiency).
Thanks for thinking of us Linux users!