DeskPad is a virtual monitor designed for screen sharing to address the problem of presentations on larger displays being hard to follow for the audience. It creates a mirrored display within its application window, allowing for a dedicated workspace that is easily shareable. Installation is simple with the option of downloading the latest release binary or using Homebrew. DeskPad functions like any other display, with the application window adjusting to changes in resolution. A unique feature is that whenever the mouse cursor moves to the virtual display, DeskPad highlights its title bar in blue, making it easy to track.
https://github.com/Stengo/DeskPad