MorphOS
Workstation OS
Friend OS
Friend gives you control of your own data, on your own online computer on locally managed servers.
Haiku OS
Haiku is an open-source operating system that specifically targets personal computing. Inspired by BeOS, Haiku is fast and easy to learn but very powerful.
ReactOS
ReactOS is a free, opensource reimplementation of windows
openMSX
Ubuntu
Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.
macOS - apple
macOS Big Sur elevates Mac to a new level of power and beauty with a refined new design, major app updates, and more transparency around your privacy.
Fedora Linux
Pick a flavor of Fedora streamlined for your needs, and get to work right away.
FreeDOS
FreeDOS is an open source DOS-compatible operating system that you can use to play classic DOS games, run legacy business software, or develop embedded systems.
Tails OS
Kali Linux | Penetration Testing Linux
Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.
Kubuntu