The tools currently available are:

Swap Screen
Provides hotkeys for performing common operations on the windows on your monitors. This includes operations like moving the active application window to the next monitor, minimising all windows on a single monitor only and rotating the contents of all monitors. It also allows you to restrict mouse movement between monitors.

Dual Wallpaper
This simplifies the process of using existing images as wallpaper on your monitors. You can either specify a different image on each monitor, or spread an image across two or more monitors or if you have enough monitors, a combination of these.

DisMon
This will disable any secondary monitors while another application is run, and will re-enable those monitors when the application has finished. This can be quite handy when running certain games which don't scroll correctly if you have more than 1 monitor enabled.

Dual Snap
Allows you to capture the current image on the primary monitor and display it on your secondary monitor.