GNOME OS is described as 'With the release of GNOME 3.38.0, we started producing and distributing bootable VM images for debugging and testing features before they hit any distribution repository. We called the images GNOME OS' and is an app in the OS & Utilities category. There are more than 25 alternatives to GNOME OS for a variety of platforms, including Linux, BSD, Self-Hosted solutions, Windows and Windows S. The best alternative is Ubuntu, which is both free and Open Source. Other great apps like GNOME OS are Debian (Free, Open Source), Linux Mint (Free, Open Source), Manjaro Linux (Free, Open Source) and Arch Linux (Free, Open Source).
Mabox Linux is based on Manjaro, featuring a customized Openbox window manager preconfigured to be ready to use. It was inspired by CrunchBang, and uses some BunsenLabs utilities adapted for Manjaro. Mabox Linux uses some of XFCE and LXDE components.
Springdale Linux (SDL) / Formerly known as PUIAS Linux is a RHEL-based Distribution and Mirror. A project of members of the computing staff of ?Princeton University and the ?Institute for Advanced Study
ZincLinux was a personal project to build an operating system using XFCE Desktop and Ubuntu on the Linux Kernel. I made this site and host the ISO for anyone that wants to try it out. It’s completely free and fully compatible with Ubuntu.