skiftOS

SkiftOS is an operating system built from scratch in modern C++.
It is featuring a reactive UI library and has a strong emphasis on user experience.
It exposes its features to developers through clean APIs.
It includes many applications like an Image Viewer, a Text Editor, a Terminal Emulator, etc...
It features a UNIX-like terminal experience with many familiar UNIX utilities.
It is also pretty easy to build from source, just follow the build guide.
It is capable of running on real hardware.