Apps similar to HP-UX include Ubuntu, which is free and open source. Other options are Debian, openSUSE, Manjaro Linux and Pop!_OS. There's no shortage of Operating Systems like HP-UX, with more than 50 alternatives for Linux, self-hosting, Mac and Windows.
Ubuntu Cloud is an open source Linux operating system designed to be used as a personal cloud server. It is based on the well known Ubuntu Linux distribution and recognized as an official Ubuntu flavor, distributed by Canonical.
GNU-Darwin aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom.
Black Lab Linux is a custom Linux distribution that focuses on bringing stability to desktop Linux. This system provides high performance and enhanced multimedia capabilities to home, business, and professional desktop Linux users.
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Spatry's remix of Manjaro Linux! It comes with the XFCE desktop, lots of themes and a complete software set designed to give you an enjoyable user experience.
Bluestar Linux is an Arch Linux-based distribution, built with an understanding that people want and need a solid Operating System that provides a breadth of functionality and ease of use without sacrificing aesthetics.
AcademiX GNU/Linux is a Debian-based Linux distribution developed specifically for education. The distribution was built on the Debian Linux (Stretch / Buster) distribution and contains free software for education.
AIX is a series of proprietary Unix operating systems developed and sold by IBM for several of its computer platforms. Originally released for the IBM RT PC RISC workstation, AIX now supports or has supported a wide variety of hardware platforms, including the IBM RS/6000 series...
MirOS BSD is a secure operating system from the BSD family for 32-bit i386 and sparc systems. It is based on 4.4BSD-Lite (mostly OpenBSD, some NetBSD®).
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