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Security updates have been issued by Fedora (anaconda, dnf5, firefox, flatpak-builder, libexif, minetest, nss, plasma-setup, python-blivet, rpki-client, and xorg-x11-server), Oracle (bind, kernel, osbuild-composer, thunderbird, webkit2gtk3, and wireshark), Red Hat (java-25-openjdk), SUSE (cacti, cacti, cacti-spine, cockpit-machines, cockpit-podman, cockpit-tukit, csync2, flannel, gdk-pixbuf, go1.25-openssl, go1.26-openssl, haproxy, kernel, libcap, libpng16, libtree-sitter0_26, libvirt, ncurses, ntfs-3g_ntfsprogs, openssl-1_1, openssl-3, openvswitch, perl, python-pyOpenSSL, python311, rclone, sudo, and tomcat), and Ubuntu (gst-plugins-bad1.0, jq, libopenmpt, linux-ibm, linux-ibm-5.15, and php-league-commonmark).

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.

Asmi Linux is desktop-oriented Linux distribution with editions based on either Ubuntu or Debian. It uses a highly-customised Xfce desktop with some user-friendly touches. Some of its other features include the Calamares system installer, out-of-the-box support for several popular virtual machine managers, a load-to-RAM boot option, the latest Firefox browser, Cloudflare DNS for faster DNS lookup, and SSH multiplexing for faster SSH connections. The project also offers a commercial "Ultimate" edition with additional software and tools.

Voyager Live is an Xubuntu-based distribution and live DVD showcasing the Xfce desktop environment. Its features include the Avant Window Navigator or AWN (a dock-like navigation bar), Conky (a program which displays useful information on the desktop), and over 300 photographs and animations that can be used as desktop backgrounds. The project also develops several other editions of Voyager Live - a "GE" edition with GNOME Shell, a "GS" variant for Gamers, and a separately-maintained flavour based on Debian's "stable" branch.

arcOS, which stands for "Amateur Radio Community Operating System", is a specialist Linux distribution based on Linux Mint. It focuses on standardised digital communication needs, commonly used for both casual and emergency communications. It is a portable system that can be booted from any computer's USB device and used immediately with Digirig Mobile, a digital modes interface for radio communications.

Xubuntu is a community-developed operating system based on Ubuntu. It comes with Xfce, which is a stable, light and configurable desktop environment.

Ubuntu 26.04 ("Resolute Raccoon") LTS has been released on schedule.

This release brings a significant uplift in security, performance, and usability across desktop, server, and cloud environments. Ubuntu 26.04 LTS introduces TPM-backed full-disk encryption, expanded use of memory-safe components, improved application permission controls, and Livepatch support for Arm systems, helping reduce downtime and strengthen system resilience. [...]

The newest Edubuntu, Kubuntu, Lubuntu, Ubuntu Budgie, Ubuntu Cinnamon, Ubuntu Kylin, Ubuntu Studio, Ubuntu Unity, and Xubuntu are also being released today. For more details on these, read their individual release notes under the Official flavors section:

https://documentation.ubuntu.com/release-notes/26.04/#official-flavors

Maintenance updates will be provided for 5 years for Ubuntu Desktop, Ubuntu Server, Ubuntu Cloud, Ubuntu WSL, and Ubuntu Core. All the remaining flavors will be supported for 3 years.

See the release notes for a list of changes, system requirements, and more.

An official variant of Ubuntu, Ubuntu Studio is a Linux-based operating system for creative individuals in the areas of audio production, video production, graphics design, photography and desktop publishing. It makes professional audio accessible on Linux; it uses the JACK sound server and a kernel built with a low-latency patch. Up until version 20.10 Ubuntu Studio shipped with the Xfce desktop environment, but this was replaced by KDE Plasma in October 2020.

Ubuntu Kylin is an official Ubuntu flavour whose primary goal is to create a variant of Ubuntu optimised for Chinese users (using the Simplified Chinese writing system), although it also supports other languages. The default desktop is called UKUI (Universal Kylin User Interface) which is based on MATE desktop and is developed with the Qt toolkit. UKUI strives to adhere to the friendly-and-simple design concept. The distribution also includes more than 20 applications developed in-house, including Kylin Assistant, Kylin Video, Kylin Screenshots and Software Center.

Ubuntu Cinnamon is an official flavour of the Ubuntu distribution featuring the Cinnamon desktop. The project strives to offer modern tools while providing a user-friendly desktop which will feel familiar for users coming from other operating systems, such as Microsoft Windows.

Ubuntu Budgie (previously budgie-remix) is an Ubuntu-based distribution featuring the Budgie desktop, originally developed by the Solus project. Written from scratch and integrating tightly with the GNOME stack, Budgie focuses on simplicity and elegance, while also offering useful features, such as the Raven notification and customisation centre.

Ubuntu is a complete desktop Linux operating system, freely available with both community and professional support. The Ubuntu community is built on the ideas enshrined in the Ubuntu Manifesto: that software should be available free of charge, that software tools should be usable by people in their local language and despite any disabilities, and that people should have the freedom to customise and alter their software in whatever way they see fit. "Ubuntu" is an ancient African word, meaning "humanity to others". The Ubuntu distribution brings the spirit of Ubuntu to the software world.

Lubuntu is a variant of Ubuntu that uses the LXQt desktop environment. (Versions prior to 18.10 shipped with the LXDE desktop.) It includes essential applications and services for daily use, including office suite, PDF reader, image editor and multimedia players. A distribution available for both 32-bit and 64-bit computers, Lubuntu is intended to be user-friendly, lightweight and energy efficient.

Kubuntu is a free, user-friendly Linux distribution based on KDE's desktop software and on the Ubuntu operating system. It has a biannual release cycle. Besides providing an up-to-date version of the KDE desktop at the time of the release, the project also releases updated KDE packages throughout the lifetime of each release.

Edubuntu is a partner project of Ubuntu, a distribution suitable for classroom use. The aim is that an educator with limited technical knowledge and skill will be able to set up a computer lab, or establish an on-line learning environment, in an hour or less, and then administer that environment without having to become a fully-fledged Linux geek.

AlmaLinux OS is an open-source, community-driven project that is built from the source code of Red Hat Enterprise Linux (RHEL). AlmaLinux is a completely binary compatible fork of RHEL and it is maintained by AlmaLinux OS Foundation which is a register non-profit.

AlmaLinux OS is an open-source, community-driven project that is built from the source code of Red Hat Enterprise Linux (RHEL). AlmaLinux is a completely binary compatible fork of RHEL and it is maintained by AlmaLinux OS Foundation which is a register non-profit.

Version:next-20260423 (linux-next) Released:2026-04-23

The famfs filesystem first showed up on the mailing lists in early 2024; since then, it has been the topic of regular discussions at the Linux Storage, Filesystem, Memory Management and BPF (LSFMM+BPF) Summit. It has also, as result of those discussions, been through some significant changes since that initial posting. So it is not surprising that a suggestion that it needed to be rewritten yet again was not entirely well received. How much more rewriting will actually be needed is unclear, but more discussion appears certain.

Omarchy is an Arch-based Linux distribution featuring the Hyprland tiling window manager. It ships with what a modern software developer would need to be productive immediately, including Neovim, Spotify, Chromium, Typora, Alacritty, LibreOffice and Zoom. The distribution boots into a text-mode system installer that downloads the latest packages from the Arch Linux repositories during installation to build a complete Hyprland desktop.