The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system is called Debian. Debian systems currently use the Linux kernel. Linux is a completely free piece of software started by Linus Torvalds and supported by thousands of programmers worldwide. Of course, the thing that people want is application software: programs to help them get what they want to do done, from editing documents to running a business to playing games to writing more software. Debian comes with over 50,000 packages (precompiled software that is bundled up in a nice format for easy installation on your machine) - all of it free. It's a bit like a tower. At the base is the kernel. On top of that are all the basic tools. Next is all the software that you run on the computer. At the top of the tower is Debian -- carefully organizing and fitting everything so it all works together.

ObsidianOS is a set of Linux distribution based primarily on Arch Linux. Its main feature is an A/B partition style (as used by Android or Chrome OS) so if an update causes some issues, it is possible to reboot into the first partition and restore the second one. It uses the ext4 filesystem exclusively. ObsidianOS offers three variants of the product - "Base", "KDE Plasma" and "COSMIC".

Mageia is a fork of Mandriva Linux formed in September 2010 by former employees and contributors to the popular French Linux distribution. Unlike Mandriva, which is a commercial entity, Mageia is a community project and a non-profit organisation whose goal is to develop a free Linux-based operating system.

ArchBang Linux is a lightweight distribution based on Arch Linux. Using the labwc Wayland compositor, it is fast, up-to-date and suitable for both desktop and portable systems. Besides GreenBANG, the project also develops a distribution called SwayBang featuring the Sway Wayland compositor.

Noid Linux is a Void-based minimalist Linux distribution with Xfce as the preferred desktop. It includes a long-term supported Linux kernel, the Calamares system installer, the Brave web browser, support for Flatpak packages, and a custom Welcome screen. The project also provides its own repository for Void's XBPS packages with additional software.