Lubuntu!

Linux Mint is an elegant, easy to use, up to date and comfortable GNU/Linux desktop distribution. Linux Mint is an Ubuntu -based distribution ( so Debian based ) whose goal is to provide a more complete out-of-the-box experience by including browser plugins, media codecs, support for DVD playback, Java and other components. It also adds a custom desktop and menus, several unique configuration tools, and a web-based package installation interface. Linux Mint is compatible with Ubuntu software repositories. »

elementary OS is a free, fast and aesthetically pleasing operating system based on Ubuntu .

Xubuntu is an elegant and easy-to-use operating system. Xubuntu comes with Xfce, which is a stable, light and configurable desktop environment.

Manjaro is a user-friendly Linux distribution based on the independently developed Arch operating system. Within the Linux community, Arch itself is renowned for being an exceptionally fast, powerful, and lightweight distribution that provides access to the very latest cutting edge – and bleeding edge – software. However, Arch is also aimed at more experienced or technically-minded users. As such, it is generally considered to be beyond the reach of those who lack the technical expertise (or persistence) required to use it. »

Kubuntu is an official "flavor" of Ubuntu that uses the KDE desktop environment instead of the default Unity . This gives it a completely different look and feel.

Raspbian is a free operating system based on Debian GNU/Linux and optimised for the Raspberry Pi hardware (the armhf processor architecture). Raspbian comes with over 35,000 packages, or pre-compiled software bundled in a nice format for easy installation on a Raspberry Pi.

Qubes is an open source operating system designed to provide strong security for desktop computing.

Ubuntu Mate is a stable, easy-to-use operating system with a configurable desktop environment. Ideal for those who want the most out of their desktops, laptops and netbooks and prefer a traditional desktop metaphor. With modest hardware requirements it is suitable for modern workstations and older hardware alike.

Google Chrome OS is a Linux-based operating system designed by Google to work exclusively with web applications. The only application on the operating system is a web browser, which includes a media player. The user interface takes a minimalist approach, resembling that of the Chrome web browser. Additionally, Chrome OS has a minimal boot time, of approximately 8 seconds on a Chromebook.

Linux is a free operating system, and Puppy Linux is a special build of Linux meant to make computing easy and fast.

Antergos, as its father, Arch Linux , is a rolling release distro. It started life under the name of Cinnarch, combining the Cinnamon desktop with the Arch Linux distribution, but the project has moved on from its original goals and now offers a choice of several desktops, including GNOME 3 (default), Cinnamon, Razor-qt and Xfce. Antergos also provides its own graphical installation program. »