Rocky Linux is described as 'Community enterprise operating system designed to be 100% bug-for-bug compatible with America's top enterprise Linux distribution now that its downstream partner has shifted direction. It is under intensive development by the community' and is a Linux Distro in the os & utilities category. There are more than 100 alternatives to Rocky Linux for a variety of platforms, including Linux, Self-Hosted, BSD, Windows and Mac apps. The best Rocky Linux alternative is Linux Mint, which is both free and Open Source. Other great apps like Rocky Linux are Ubuntu, Debian, Fedora and Arch Linux.
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
Athena OS is an Arch-derived Linux distribution designed for penetration testing, bug-bounty hunting and InfoSec students. The distribution provides a way to connect directly to some of the e-learning hacking resources, such as Hack The Box, Offensive Security, PWNX and InfoSec...
BSD-derived desktop OS designed for usability, featuring graphical ports management, GNUstep system configuration, standard tools for daily tasks including email, web browsing, and word processing, supporting multiple licenses like BSD, X.org, and GNUstep.
United States
The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.
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
Peropesis is a small-scale, minimalist, command-line-based Linux operating system. It's an incomplete system, but it's constantly being improved. Also, it is a free operating system created from a free software.
MorphOS is an AmigaOS-like computer operating system. It is a mixed proprietary and open source OS produced for the PowerPC processor based computers.
Germany
EU
Live bootable linux CD supported by US department of defense, featuring firefox, thunderbird, word processor, and reads USB flash drives.
This project birth in 2002! blackPanther OS is an independent Linux distribution which is not a fork of anything else. It is designed to be simple, fast, and easy to use... Its motto: just click and use it!.
HungaryEU
Based in Ottawa, Ontario, Canada, BlackBerry QNX has provided foundational software for many of the world’s mission-critical embedded systems since 1982. From nuclear power plants, surgical robots and class III life-critical medical devices to autonomous vehicles and brands like...
Beautiful, Open, and Free - Trenta OS is a Linux based operating system that aims to compete graphically with some well known premium operating systems but in the free & open-source Linux world.
