Alternatives to Iris

Screen colour temperature controller

Adaptive brightness for external displays

Tool to control external monitor brightness & volume

Utility that prevents the system from going to sleep

Adaptive brightness for displays

Utility that prevents the system from going to sleep

Apply special vision effects on your screen

Utility to dim background/inactive content in the screen

Monitor resolution and settings manager

Tool to set light or dark appearance on a per-app basis

Tool to disable temporal dithering on Apple Silicon Macs