MultiMonitorTool – Multi-monitor manager & monitor

MultiMonitorTool is a multi-display management software developed by NirSoft (i.e.: the only developer of the entire NirSoft: Nir Sofer) for Windows XP and higher. It's portable, compact (less than 1 MB) and very user friendly, and able to monitor each monitor, move program Windows between multiple monitors, set as primary monitor, and has more settings that can be made to monitor screens.