https://www.gnu.org/home.en.html https://www.gnu.org/home.en.html It dates back to the earliest days of the FSF ('84 ish) It was meant to have it's own Kernel

https://www.gnu.org/home.en.html https://www.gnu.org/home.en.html It dates back to the earliest days of the FSF ('84 ish) It was meant to have it's own Kernel (Hurd microkernel) but largely means Linux User Space these days imo.