db-os.txt

 windows
 linux
 macos / darwin
 haikuos / beos
 riscos / custom
 Atlas-OS / winnt
 ReviOS / winnt
 reactos / winnt foss
 Redox (https://redox-os.org/) / rust, unix like - custom
 serenityos / unix like - custom
 bsd / free open DragonFly BSD ravynOS / bsd
 Qubes OS / xen vm - custom
 https://github.com/sebanc/brunch / chrome os (linux)
 https://github.com/iProgramMC/NanoShellOS
 
 minix
 morphos
 amiga
 arcaOS
 solaris
 "os/2"
 TempleOS