Distros

KDE Linux is a user-focused, general-purpose Linux distribution. It is built by KDE and it is meant to showcase the best implementation of everything KDE has to offer, using the most advanced technologies. The distribution's base packages come from Arch Linux, while everything else is either compiled by the kde-builder tool or included as Flatpak packages. KDE Linux does not come with any traditional package manager, but supports installing Flatpak, Snap or AppImage applications. As it has an immutable base, system updates involve replacing the operating system image with an entirely new one.

KDE neon is a Ubuntu-based Linux distribution and live DVD featuring the latest KDE Plasma desktop and other KDE community software. Besides the installable DVD image, the project provides a rapidly-evolving software repository with all the latest KDE software. Two editions of the product are available - a "User" edition, designed for those interested in checking out the latest KDE software as it gets released, and a "Developer's" edition, created as a platform for testing cutting-edge KDE applications.

Kicksecure is a security-hardened Linux distribution based on Debian's "Stable" branch, with Xfce as the default desktop user interface. It is a hardened operating system designed to be resistant to viruses, malware and attacks, and extensively reconfigured in accordance with an advanced multi-layer defense model, thereby providing in-depth security. Kicksecure provides protection from many types of malware in its default configuration with no customization required.

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.

KolibriOS is a tiny open-source operating system with a monolithic preemptive kernel and video drivers for 32-bit x86 architecture computers. KolibriOS is a fork of MenuetOS, written entirely in FASM (assembly language). However, C, C++, Free Pascal, Forth, among other high-level languages and compilers, can also be used in application development. KolibriOS features a rich set of applications that include a word processor, image viewer, graphical editor, web browser, and over 30 games.