Launched on April 13th, 2017
Launched on April 21st, 2016
Launched on March 15th, 2016
Simple, modern and elegant GNU/Linux based OS with a lot of support. I prefer Kubuntu flavor, as it's more customizable from the box, but your preference may be different. Wayland support on GNOME (Ubuntu default WM) is better.
Far from telemetry but not from ease of use
Not real foss... Too bad...
My favorite OS since 2008
Very secure, developer friendly