HydraPWK GNU/Linux is a Debian-based distribution designed primarily for penetration testing. It contains a collection of penetration testing tools, including tools for information gathering, scanning, stress testing, exploitation, cracking, reversing engineering and forensics. Formerly known as BlackTrack, the distribution uses a real-time Linux kernel and features the Xfce desktop.

FunOS is an Ubuntu-based Linux distribution which features the JWM graphical user interface. The project is intended to be more lightweight than official Ubuntu community editions while providing the same application compatibility and hardware support.

CentOS as a group is a community of open source contributors and users which started in 2003 and has been sponsored by Red Hat since 2014. CentOS Linux versions up to CentOS Linux 8 are 100% compatible rebuilds of Red Hat Enterprise Linux, in full compliance with Red Hat's redistribution requirements. In 2020 it was announced CentOS Linux is being discontinued and replaced with CentOS Stream, a developer-focused distribution which acts as a middle-stream between Fedora and Red Hat Enterprise Linux.

d77void GNU/Linux is a Void-based Linux distribution created to demonstrate the capabilities of Void's tools, such as void-mklive and void-packages. Originally initiated as a Void respin with the Fluxbox window manager, the project has evolved to offer a wide range of window manager, Wayland compositor and desktop environment options, including Awesome, bspwm, COSMIC, dwm, Fluxbox, herbstluftwm, Hyprland, i3wm, JWM, labwc, LeftWM, LXQt, Niri, Openbox, Qtile, River, Sway, Wayfire and Xfce. The distribution can be installed to a hard disc with the text-mode d77void-installer.

Origami Linux is a Fedora-based desktop Linux distribution with immutable root filesystem and atomic updates. It uses System76's COSMIC desktop. The distribution does not offer a "live" mode; it brings up the Anaconda system installer right after the initial boot for a guided installation instead. Besides the default image that uses the standard Fedora Linux kernel, the project offers a separate image with a CachyOS kernel (a Linux kernel with various performance optimisations and CPU enhancements developed by the CachyOS distribution project). A third image, with drivers for recent NVIDIA graphics cards, is also available. Origami Linux intends to be minimal, clean, customisable and suitable for development work.