- it is developed under the flag of the GNU Project, so you can expect the same standards of quality of both code and documentation as the rest of the GNU Project
- it uses GNU Guile as the main language of the system instead of Nix, which (allegedly) allows you to extend or modify the behavior of the whole system
- it uses GNU Shepherd as the service manager instead of systemd
All the main goals of the projects are pretty much the same.