Nitrux: Linux, KDE Plasma 5, Qt and Nomad Desktop
Nitrux is a Linux distribution based on Ubuntu suitable for laptops and desktop computers. Nitrux provides all the benefits of the Ubuntu operating system combined with a focus on portable, redistributable application formats like AppImages. Nitrux uses the LTS branch of Ubuntu as a basis using only the core system and then slowly building up to ensure a clean user experience. Nitrux is suitable for newcomers to Linux as well as *nix experienced users. Nitrux uses KDE Plasma 5 and KDE Applications; we also use our in-house software suite Nomad Desktop adding to the user experience.
This sounds very similar to Elementary OS, but instead of Gnome and Gtk+-oriented, it's built around Qt and KDE technologies. I like distributions that try to do something more interesting than being just another random Gnome or KDE distribution, and I especially like how the open source Linux community seems to be focusing more and more on polish, design, and simplicity lately. Very welcome additions to the Linux world.