Parrot (formerly Parrot Security OS) is a Debian-based, security-oriented distribution featuring a collection of utilities designed for penetration testing, computer forensics, reverse engineering, hacking, privacy, anonymity and cryptography. The product, developed by Frozenbox, comes with MATE as the default desktop environment.

Volumio (formerly RaspyFi) is a Debian-based Linux distribution designed and fine-tuned exclusively for music playback. It runs on a variety of devices, typically small and cheap computers like the Raspberry Pi, but also on low-power personal computers, notebooks or thin clients. It aims to fully integrate Music Player Daemon, an open-source music player server, into the current Debian releases and to optimise it for Audiophile-quality music playback. Volumio also makes it simple to play music library directly from a USB storage device or from any network-attached storage and it also enables users to listen to web-based radio stations from Spotify, Last.fm and SoundCloud.

Refracta is a Linux distribution based on Devuan GNU+Linux (a systemd-free fork of Debian), designed primarily for home computer users and also for use as a system rescue and recovery disk. It provides a simple and familiar layout using the Xfce desktop. Other desktop environments and additional software packages are available from the Devuan package repository. Besides providing a Linux distribution on a live CD, the project also develops useful tools, such as refractainstaller, refractasnapshot and refracta2usb which allow users to customize the installation and create custom live CD or live USB images.

Flora Linux-libre is a Linux distribution that uses the Linux-libre kernel, a modified version of the Linux kernel that contains no binary blobs, obfuscated code, or code released under proprietary licenses. It also excludes any non-free firmware. The project rebuilds Debian's "Stable" and some other Debian derivatives, such as MX Linux, and creates a "libre" flavour of those distributions with either MATE or Xfce desktops. Flora Linux-libre also comes with snapshot tools and installers that enable easy remastering of the distribution, as well as uim (short for universal input method), a multilingual input method framework.

Oracle Linux is an enterprise-class Linux distribution supported by Oracle and built from source packages for Red Hat Enterprise Linux (RHEL). Some of the special features of Oracle Linux include a custom-build and rigorously-tested Linux kernel called "Oracle Unbreakable Kernel", tight integration with Oracle's hardware and software products including most database applications, and "zero downtime patching" - a feature that enables administrators to update the kernel without a reboot.

Arkane Linux is an immutable, atomic, Arch-based distribution which aims to provide a GNOME-centered experienced with minimal, yet full-featured and non-intrusive defaults. It provides a stock GNOME Shell bundled exclusively with core applications required to offer a minimal GNOME desktop experience. Arkane Linux serves primarily as a reference implementation, development environment, and as the developer's personal configuration tool to aid with work on the project's immutable system management toolkit called "Arkdep".

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.

GNOME OS is an experimental, immutable Linux distribution that ships the latest in-development GNOME desktop, core applications and stack. It serves as a reference for developers and testers. It is designed around the modern systemd and GNU-based userland built from the Freedesktop SDK. Initially, GNOME OS used a library and set of utilities called OSTree to deploy the root filesystem and manage updates, but later migrated to "systemd-sysupdate" which offers enhanced immutability, auto-updating, adaptability, factory reset, uniformity and other modernised security properties. GNOME OS can be loaded as a live image in Boxes, VirtualBox, QEMU and other virtualisation software, but it can also be installed on a standard x86_64 hardware. The distribution does not support traditional package management; however, additional software applications can be installed via the Flatpak utility which is supported out of the box.

LainOS is a lightweight, Arch Linux-based desktop distribution aimed at developers, tinkerers and hackers. As a choice of graphical environments, it offers the Hyprland Wayland compositor and the Openbox window manager. The distribution also features the Calamares system installer, personalised yet functional visual aesthetics, and a selection of useful software. LainOS is intended for users who share the admiration of Serial Experiments Lain, a Japanese anime television series.

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.

FreeBSD is a UNIX-like operating system for the i386, amd64, IA-64, arm, MIPS, powerpc, ppc64, PC-98 and UltraSPARC platforms based on U.C. Berkeley's "4.4BSD-Lite" release, with some "4.4BSD-Lite2" enhancements. It is also based indirectly on William Jolitz's port of U.C. Berkeley's "Net/2" to the i386, known as "386BSD", though very little of the 386BSD code remains. FreeBSD is used by companies, Internet Service Providers, researchers, computer professionals, students and home users all over the world in their work, education and recreation. FreeBSD comes with over 20,000 packages (pre-compiled software that is bundled for easy installation), covering a wide range of areas: from server software, databases and web servers, to desktop software, games, web browsers and business software - all free and easy to install.

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.

Arch Linux is an independently developed, x86_64-optimised Linux distribution targeted at competent Linux users. It uses 'pacman', its home-grown package manager, to provide updates to the latest software applications with full dependency tracking. Operating on a rolling release system, Arch can be installed from a CD image or via an FTP server. The default install provides a solid base that enables users to create a custom installation. In addition, the Arch Build System (ABS) provides a way to easily build new packages, modify the configuration of stock packages, and share these packages with other users via the Arch Linux user repository.

Talos is a specialist Linux-based operating system for running Kubernetes, an open-source system for automating deployment, scaling and management of containerised applications. Minimal, immutable and hardened, it does not offer any shell or interactive console; instead, all system management is done via remote Application Programming Interface (API) calls, where messages sent from a client application are protected with mutual Transport Layer Security TLS (mTLS) authentication. Talos also delivers atomic updates, thus maintaining the Linux and Kubernetes versions up-to-date. Talos is developed in the USA by Sidero Labs, Inc.

Madrid_Linux, or MAX for short, is an GNU/Linux distribution created by the Council of Education of Madrid, Spain. It is a live operating system based on Ubuntu. Besides the ability to boot the operating system on any computer, the distribution includes a graphical installer with an option to resize FAT or NTFS partition and create space for installing MAX on a hard disk.

ExTiX is a desktop Linux distribution and live DVD based on Ubuntu, offering a choice of alternative desktop environments.

Dr.Parted Live is a bootable GNU/Linux distribution based on Debian's "Testing" branch. It is a live image featuring a lightweight Openbox window manager and useful applications for disc partitioning as well as data backup, restore and recovery.

Kiro is an Arch Linux-based distribution with the goal of being an intuitive and customisable ISO image builder. It provides a simple way to build a custom Arch-based installation medium with a choice of packages, settings and scripts. Kiro uses the Xfce desktops, includes the Calamares system installer, and has a modular structure.

DynFi is a firewall platform based on FreeBSD. The project provides utilities for VPN, IDS, proxy, anti-virus, and packet filtering. Support is provided in several languages, including French, English, and German. DynFi is designed to be deployed on both physical hardware and in virtual environments.

KaOS is a desktop Linux distribution that features the latest version of the KDE desktop environment, the Calligra office suite, and other popular software applications that use the Qt toolkit. It was inspired by Arch Linux, but the developers build their own packages which are available from in-house repositories. KaOS employs a rolling-release development model and is built exclusively for 64-bit computer systems.

Armbian is a Linux distribution designed for ARM development boards. It is usually based on one of the stable or development versions of Debian or Ubuntu and it supports a wide variety of popular ARM-based devices, including Banana Pi, Cubieboard, Olimex, Orange Pi, Odroid, Pine64 and others. Armbian includes a menu-driven configuration tool along with stock Debian utilities, the Bash shell, and a choice of Cinnamon or Xfce desktop.

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. Nix stores all packages in isolation from each other; as a result there are no /bin, /sbin, /lib or /usr directories and all packages are kept in /nix/store instead. Other innovative features of NixOS include reliable upgrades, rollbacks, reproducible system configurations, source-based model with binaries, and multi-user package management. Although NixOS started as a research project, it is now a functional and usable operating system that includes hardware detection, KDE as the default desktop, and systemd for managing system services.

NebiOS is an Ubuntu-based desktop Linux distribution with a custom Wayland compositor called NebiDE (based on Wayfire). It features various user interface enhancements, an initial setup module called OOBE, the NebiOS App Runtime (napp-runtime) portable application format with bubblewrap containerization, improved gaming performance with Steam Proton integration, a kernel switcher for easy multi-kernel installation, and the Wine compatibility layer for running some Windows applications. NebiOS is intended as a general-purpose operating system for daily computing tasks, including creative work and gaming.

Pisi Linux is a GNU/Linux distribution based on the old Pardus Linux with its unique PiSi package management system. It's an operating system for desktop computer with software for listening to music, browsing the Internet and creating documents. Pisi Linux is built from scratch on a stable base, but many core user applications, such as the Firefox web browser or the VLC media player, are kept constantly up to date. To increase the distribution's user friendliness, Flash player and many multimedia codecs are installed and pre-configured for immediate use.