NixOS
NixOS is an independently developed GNU/Linux distribution that aims to improve the state of the art in system configuration management. In NixOS, the entire operating system, including the kernel, applications, system packages and configuration files, are built by the Nix package manager.
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Aurora
Aurora is a Fedora Silverblue-based Linux distribution with the goal of being a general-purpose workstation. It uses the KDE Plasma desktop.