"a GTK3-based shell for sway Wayland compositor"

Fairly involved window manager shell project - meaning, it will provide all kinds of desktop utilities that make up your interactions: a panel, a dock, a notification center, a file launcher, and so on. Can be used individually or together as a form of lightweight desktop environment on top of e.g. sway.

Modeled somewhat closely on GNOME it seems to provide all necessities for a fully mouse-driven DE on top of any wayland WM.