I have an entire page about macOS.

Linux

Arch Linux

(wow that's hard, I should have tried Manjaro first) Booting up from the USB installer just left me at a blinking root prompt... I was like "is this even working?" I expected a guided installer just like every other distro ever.

Ubuntu

Since 8.04 but now it annoys me Linux From Scratch - https://news.ycombinator.com/item?id=23787526

Non-Linux

- Haiku OS crashed all the time Still thinking of trying Serenity OS https://github.com/SerenityOS/serenity ReactOS - a questionably legitimate clone of Windows OS https://reactos.org