A very customizable SDDM theme that actually looks good.
DisplayMagician is an open source tool for automatically configuring your displays and sound for a game or application from a single Windows Shortcut.
A Minimal, Configurable, Single-User GTK3 LightDM Greeter
Detach, restore, and switch monitor layouts without touching cables.
An open source display profile management program for Windows with support for NVIDIA Surround
Template-oriented driver for e-paper displays
An open-source Python library which can modify your Mac's display settings manually or automatically.
A sddm theme inspired by Serial experiments lain.
A Mac app and command-line tool for fiddling with display mirroring: on/off/toggle
WindowsDisplayAPI is a .Net wrapper for Windows Display and Windows CCD APIs
SDDM theme that looks like ii lockscreen
Instantly switch display profiles on Windows. Save & restore resolution, refresh rate, HDR, rotation, DPI, audio, and monitor layouts. Features staged application mode for complex setups, hotkeys, system tray, auto-start, and themes. Perfect for multi-monitor users, gamers, and content creators. Free & open-source.
Automatic X login service for systemd
A toy display manager written in Rust. Inspired by Slim it aims to provide a simple and elegant login screen.
minimal(istic) lightdm-webkit2-greeter theme
General purpose X11 Login and Display Manager built on the Enlightenment Foundation Libraries (EFL) for X11 and Wayland sessions