Free OS & Utility Software
Ubuntu
Ubuntu is a free and open source Linux distribution developed and released by Canonical. The distribution uses a customized version of GNOME as desktop environment and is based on Debian. Ubuntu is the most popular Linux distribution today, and continues to drive new people to the Linux ecosystem.
Elementary OS
Elementary OS is a neat and coherent, free and open source operating system based on the Linux distribution Ubuntu. The simplicity of Elementary OS makes it a perfect choice for people switching from other popular operating systems such as macOS or Windows. Elementary OS is a feature complete operating system that comes with its own desktop environment called Pantheon and custom built, pre-installed utility applications such as Photos, Music, Videos, Calendar, Terminal, Files, and more.
SerenityOS
SerenityOS is a graphical Unix-like operating system for desktop computers. The operating system is built from scratch in C++, by the Swede Andreas Kling and a community of developers of all levels. SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core that is built form the ground-up to appeal to today's power-users that want to get things done. The build is monolithic in nature, while allowing anyone to contribute to the core, UI and software for the system.
Raspbian
Raspbian is a Debian-based operating system that is optimized to work on Raspberry Pi hardware. Along the the core operating system, Raspian provides over 35,000 packages of pre-compiled software that are easy to install and use for your next Raspberry Pi build.
MX Linux
MX Linux is a Debian-based Linux distribution created by the MX community. The operating system is a cooperative venture between antiX and MX Linux communities. MX Linux desktop environment is based on Xfce and provides a fast, low-resource and friendly experience. It includes modular core components for the full functionality expected from a modern desktop environment. A collection of powerful and handy “MX Tools” that cover a range of actions from boot options to repository management. A fast package manager that can install from Popular Applications, MX Test Repo, Debian Backports and Flatpaks.
Fedora
Fedora is a free and open-source Linux distribution developed by the community-supported Fedora Project. The project is primarily sponsored by the IBM subsidiary Red Hat while also receiving additional support from other companies. Fedora is used both on desktops and on servers where it power enterprise-level systems and provides the latest datacenter technologies.
Q4OS
A fast and friendly, desktop oriented operating system based on Debian Linux. Q4OS provides a set of dedicated utilities and specific optimizations, combined with a focus on getting a productive system easily. This makes it ideal for people who want to get a working environment tailored to individual needs and preferences. Q4OS is a also a good choice for virtual cloud environments due to its very low hardware.
Garuda Linux
Garuda Linux is a free and open-source Arch-based Linux distribution. The mission of Garuda Linux is to provide a stable and easy to install version of Arch Linux. Garuda Linux supports the following desktop environments KDE, GNOME, Xfce, Cinnamon, MATE, LXQt-kwin, Deepin, Wayfire, BSPWM and i3wm and can easily be installed with the Calamares installer. On top of that, Garuda Linux provides GUI's for package management with Pamac, kernel and driver management with Garuda Settings Manager, GPU switching for Optimus laptops with Optimus Manager, manage common tasks with Garuda Assistant, and a GUI for installing curated gaming software called Garuda Gamer.
Tails
The Amnesic Incognito Live System or Tails for short is a portable operating system that protects you against surveillance and censorship. The operating system can started from a USB stick on any macOS, Linux or Windows computer, leaving no trace on that computer after it has been shutdown. Allowing you to make any computer into a Tails protect environment free of surveillance. Tails includes a variety of open source tools that can be used to browse the web, edit document and communicate saftley. Including Tor, Tor Browser, Pidgin, Network Manger, VeraCrypt, GNUPG, MAT, KeePassXC, GtkHash and many more.
BleachBit
BleachBit is a free and open-source disk space cleaner, privacy manager, and computer system optimizer that allow you to fully delete unanted files and improve privacy of your system. With BleachBit it's simple to clean cache, internet history, temporary files, logs, cookies, Firefox, Google Chrome, Flash, macOS, Linux, Windows and more. BleachBit is fully open-source and released under the GNU General Public License.