Microsoft Windows uses a stacking window manager by default, but bug.n implements a highly usable tiling window manager for Windows with tiling, virtual desktops, and keybindings.
Stacking Window Management vs. Tiling Window Management
Stacking window managers, like the one included with Windows, require the the user to move and resize windows manually. In contrast, tiling window managers like bug.n move and resize windows automatically to take up the entire desktop space without overlapping.
Single Desktop vs. Virtual Desktops
Windows places all its windows on one desktop space. bug.n (as well as most Linux window managers) provides multiple virtual desktops, each with its own set of windows.
Mouse Control vs. Keybindings
Windows allows the user to move, resize, and close windows using the mouse. To save the space required to display those buttons, bug.n utilizes keybindings to perform those functions instead.
bug.n Installation and Configuration
Download the latest version of bug.n and run the executable. Refer to the General Help page of the bug.n wiki to get started. Though the default configuration is completely usable, it is highly configurable. To customize bug.n, create a Config.ini in the same folder as the executable and refer to the Configuration and Hotkeys pages of the bug.n wiki. GUI, taskbar, layout, and hotkeys are all readily modifiable.
bug.n is a terrific Windows resource, both for tiling window manager users and for stacking window manager users looking to try something new.