There are 2 repositories under multi-monitor topic.
Kitty drop-down service for sway & i3wm
Modular multi-screen pdf presentation viewer
:lock: i3lock wrapper with multi-monitor support
KWin scripts controlling window placement on multi-monitor setups
Hackintosh Build with i7-7700k, AMD R9 390 + iGPU enabled for Multi Monitor on macOS Mojave
Multi-monitor ANSI Art Scroller
Mirrored from https://gitlab.com/compiz/compicc.git
Multi monitor photo slideshow screensaver
MultiMonitorRdp is a simple console program designed to make using Windows Remote Desktop client easier with multi-display setups.
Split and view large media (image or video) on multiple displays
Easily check for dead, stuck, or defective pixels. Test monitors before purchasing. Test screens during the warranty period. Test anytime and anywhere. DefectPX comes with multi-monitor support, and a very intuitive interface.
Multi-screen window manager plugin for Hammerspoon
Script to move all windows to main monitor
An application that allows you to apply a single image as your wallpaper spanning all of your screens on KDE.
Play WoW on 3 monitors. Enlarge you FoV! 🍆
Rounded Windows Edges is a Windows utility that enhances your user interface by adding customizable rounded corners to all application windows across multiple monitors. This application is designed to provide a modern and aesthetically pleasing look to your desktop environment.
X Colour Management
Triple monitor brightness manager plugin for Hammerspoon
Dynamic Multi-Monitor Desktop Cloning. Clone active monitor to Borderless Fullscreen window. Steamlink-like Clone
A simple tool for PowerPoint that enables a history-like function during the presentation on multiple projectors.
A simple Windows command-line tool for cropping multi-monitor PNG "PrtScr" images down to a single monitor
Keeps the cursor inside the boundary of the primary monitor if the specified executable is already a process or when it becomes a process.
Mouse lock for dual monitor system, button hold for transition
Autohotkey script that detects how many displays you have and then sets the wallpaper you define depending on how many displays. Useful when you Dock and Undock from a multi-monitor setup.