My main shorthand for Windows 8 is: the Windows 7 Phone GUI tiles, plus Windows 7 running Internet Explorer version 10, plus new HTML 5 apps, sort of equals Windows 8. I know this is a lame ...
It's full Windows 8-style shell for Linux ...
Someone recreated Windows 8.1's tiled Start menu for Linux — a niche, open-source throwback. It's Python-based, supports flatpaks, Steam, and native apps; tiles are movable and colors customizable.