https://www.gnu.org/
The GNU Operating System and the Free Software Movement
Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.
gnu operating systemfree
https://www.opensuse.org/
openSUSE - Free Linux operating systems for desktops, servers and containers
openSUSE makes open source Linux operating systems, available for free in several flavors.
linux operating systemsfree
https://almalinux.org/
AlmaLinux OS - Forever-Free Enterprise-Grade Operating System
almalinux osfree enterprise
https://emutos.sourceforge.io/
EmuTOS - Free operating system for Atari ST, and more.
EmuTOS is a Free operating system for computers based on Motorola 680x0 or ColdFire microprocessors.
free operating systematari
https://www.devuan.org/get-devuan
Get Devuan | Devuan GNU+Linux Free Operating System
Free GNU+Linux base OS. Devuan is a fork of Debian without systemd. Devuan provides a safe upgrade path from Debian, to ensure the right to Init Freedom and...
devuan gnu linuxgetfreesystem