One of the most well-known programs for multi-monitor customization, PowerToys is an open-source app designed by Microsoft to provide users with advanced Windows utilities. You can download PowerToys from the Microsoft Store website or from the Microsoft Store app. With the app installed, you can open it to configure which utilities you want access to. You can also click on the PowerToys icon in the system tray to access certain utilities without needing to open the app. Apart from the features mentioned above, the app offers many that benefit those without multiple monitors as well.