Open Source OS & Utility Software
Zorin OS
A Linux distribution that is designed from the ground-up to be a replacement for Windows or macOS. With Zorin OS you can get to know Linux quickly with a desktop environment similar to your previous experience with the commercial operating systems. Zorin OS let's you choose a desktop layout that mimic your previous OS, be it Windows or macOS. The operating system is built on-top of Ubuntu and runs on the same open-source software that powers the U.S. Department of Defense, NASA, and more.
ReactOS
ReactOS is a free and open-source Windows-like operating system for amd64/i686 computers. ReactOS was designed to be binary-compatible with computer programs and device drivers made for Windows Server 2003 and Microsoft Windows NT family of operating systems including Windows NT4, Windows 2000, Windows XP, Windows 2003, Windows Vista and Windows Seven. To Some, ReactOS is a potential open-source drop-in replacement for Windows and for its information on undocumented Windows APIs
GhostBSD
GhostBSD is a free an open-source operating system based on FreeBSD. GhostBSD comes pre-installed with MATE desktop, OpenRC, the LibreOffice suite and OS packages for simplicity adn ease-of-use.
Remix OS
Remix OS is an operating system for personal computers with x86 and ARM architectures that, prior to discontinuation of development, shipped with a number of 1st- and 3rd-party devices. With Remix OS you can run mobile Android apps on your Intel-based desktop PC.
Kubuntu
Kubuntu is a Linux distribution that provides all you need to have fun and be effective your computer. It's a great free and open-source alternative to Windows or macOS. Kubuntu unites Ubuntu with KDE and the Plasma desktop environment, bringing you a full set of applications. The installation includes productivity, office, email, graphics, photography, and music applications ready to use at startup.
Asahi Linux
Asahi Linux is a free and open source Linux distrobution that aims to bring you a polished Linux experience on Apple Silicon Macs. With Asahi Linux you can finally run your favorite open source operating system on the new line Mac's, starting with the 2020 M1 Mac Mini, MacBook Air, and MacBook Pro.
Kali Linux
Kali Linux is a Debian-based Linux distribution aimed at advanced penetration testing and security auditing of computer systems and networks. Kali Linux contains several hundred pre-installed tools which are geared towards various information security tasks, such as computer forensics, penetration testing, reverse engineering and security research.
Rocky Linux
Rocky Linux is a community-developed, enterprise-grade operating system. The distribution was created to combate the declining trust in CentOS after the aqqustion made by IBM and Red Hat. Rocky Linux aims to provide a free and open, downstream, version-pinned option of REHL (Red Hat Enterprise Linux).
Arch Linux
A highly modular, flexible and lightweight Linux distribution for computers with x86-64 processors. Arch Linux is a free and openly developed by the Arch community and released under the GNU General Public License.