Kubuntu is described as 'Official "flavor" of Ubuntu that uses the KDE Plasma desktop environment. This gives it a completely different look and feel' and is a very popular Linux Distro in the os & utilities category. There are more than 100 alternatives to Kubuntu for a variety of platforms, including Linux, Self-Hosted, Windows, Mac and BSD apps. The best Kubuntu alternative is Linux Mint, which is both free and Open Source. Other great apps like Kubuntu are Ubuntu, Debian, Fedora and Arch Linux.
ToaruOS is a completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and user space including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network stack, etc.
United States
Pentoo is a security-focused livecd based on Gentoo. It's basically a Gentoo install with lots of customized tools, a customized kernel, and much more.
Dracos Linux is purposed as an educational, especially to recognize the operation system of Linux and we respect ethical hacking.
United Kingdom
Matriux is a fully featured security distribution consisting of a bunch of powerful, open source and free tools that can be used for various purposes including, but not limited to, penetration testing, ethical hacking, system and network administration, cyber forensics...
United States
ExectOS aims to be a stable and flexible, general purpose operating system written from scratch. It is designed to be modular, maintainable and compatible with existing software. It implements a brand new XT architecture and features own native application interface.
A libre open source Linux operating system. Focused on ease of use, simplicy, and flexibility to adapt and change.
Live bootable linux CD supported by US department of defense, featuring firefox, thunderbird, word processor, and reads USB flash drives.
Minoca OS is a general purpose operating system designed specifically for feature-rich embedded devices. It's got all the high-level functionality that you've come to expect from an operating system, but offers it in a fraction of the memory footprint.
Canada
Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers, written “from scratch”, and developed primarily by a single hobbyist programmer since 1997.
The most advanced, powerful and yet beautiful penetration testing distribution ever created.Lined up with ultimate collection of tools for pro Ethical Hackers and Cyber Security Experts.
United Kingdom
ParticleOS is a fully customizable immutable distribution implementing the concepts described in Fitting Everything Together.
Indonesia
