SliTaz GNU/Linux is a mini distribution and live CD designed to run speedily on hardware with 256 MB of RAM. SliTaz uses BusyBox, a recent Linux kernel and GNU software. It boots with Syslinux and provides more than 200 Linux commands, the lighttpd web server, SQLite database, rescue tools, IRC client, SSH client and server powered by Dropbear, X window system, JWM (Joe's Window Manager), gFTP, Geany IDE, Mozilla Firefox, AlsaPlayer, GParted, a sound file editor and more. The SliTaz ISO image fits on a less than 30 MB media and takes just 80 MB of hard disk space.
Connexion
Drauger OS is an Ubuntu-based Linux desktop gaming distribution that ships with many modifications and optimizations over stock Ubuntu; these are intended to improve gaming performance and the gaming experience. From simple changes such as swapping GNOME out for KDE Plasma and using a dark Qt theme by default, to more complex changes such as using a kernel compiled in-house and replacing PulseAudio with Pipewire. Drauger OS is built from the ground up with a focus on performance. 
Canaima GNU/Linux is a Venezuelan desktop distribution based on Debian GNU/Linux. It is primarily designed as a solution for the computers of National Public Administration in accordance with the presidential decree number 3.390 about the use of free technologies in National Public Administration in the country. 
Pinta 3.1 is available for download. The open source image editor adds axonometric grids, polygon selection tool, lower memory usage – and lots more!
MagOS Linux is a Russian desktop-oriented distribution based on ROSA, a distribution that was forked from Mandriva Linux in 2011. It uses the RPM package management. MagOS Linux comes with KDE Plasma desktop by default, but it also ships the lightweight LXQt desktop for older and low-specification computers. Besides the standard upstream packages from ROSA, the project also provides its own RPM package repository (with various network and NVIDIA display drivers), as well as separate modules (in XZM format) with extra hardware drivers, server tools, MATE desktop, Wine emulator, Java software and additional web browsers, including Chromium and Yandex. 
Nobara Project is a modified version of Fedora Linux with user-friendly fixes added to it. The distribution comes with certain features that do not ship with the regular Fedora, such as WINE dependencies, OBS Studio, 3rd party codec packages for GStreamer, NVIDIA drivers, and some package fixes. Nobara aims to fix most of those issues and offer a better gaming, streaming and content creation experience out of the box. The project's official release comes with a custom-themed GNOME desktop, but it also offers separate editions with standard GNOME and KDE desktops. 
Turntable 5.0 adds collapsible player controls you can hide on-demand, plus a year-end 'wrapped' recap pulling stats from Last.fm, Libre.fm and more. Free on Flathub.
PorteuX is a Linux distribution based on Slackware Linux, inspired by Slax and Porteus and available to the public for free. Its main goal is to be fast, small, portable (run from a thumb drive), modular and optionally immutable. It is pre-configured for basic usage, including lightweight applications for each one of the seven desktop environments (Cinnamon, GNOME, KDE Plasma, LXDE, LXQt, MATE and Xfce) available. No browser is included, but an app store is provided for downloading any of the most popular browsers, as well as other applications. 
Pearl Linux OS is a distribution based on Ubuntu. Pearl uses components of the LXDE and Xfce desktop environments to create a desktop experience which looks similar to Apple's OS X desktop environment. The project calls this hybrid desktop PearlDE. Pearl Linux OS is available in several editions, including GNOME, MATE and PearlDE.