The i3 window manager is a fast window manager that helps you keep all of your applications in the right place. It automatically tiles windows and can manage those tiles across multiple virtual desktops. However, there are certain applications that I really prefer in a floating window. Floating windows do not get tiled and they can easily be dragged around with your mouse. They’re the type of windows you expect to see on other non-tiling desktops such as GNOME or KDE.