Setting the color temp of the screen really only requires about 40 lines of C (80 or so all inclusive). sct is a crude utility which does roughly that. I’d say exactly that, but some of the calculations aren’t actually exact.
Night Screen Alternatives
Night Screen is described as 'Is created for those people who spend a lot of time at night working' and is a color temperature tool in the sport & health category. There are more than 50 alternatives to Night Screen for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best Night Screen alternative is f.lux, which is free. Other great apps like Night Screen are Redshift, Solace, LightBulb and Red Moon.
Alternatives list
Nocturne is simple app for switching a computer to night vision mode. It has a few tricks up its sleeve: color correction, window shadow toggling, and background removal.
Cost / License
- Free
- Open Source
Alerts
- Discontinued
Platforms
- Mac

Shady puts a shade over your screen to help soothe your tired or dazzled eyes. You can use it to reduce your Mac's brightness far below the usual minimum, without any risk of damage to your screen.
Cost / License
- Free
- Open Source
Platforms
- Mac

SunshinePal is your daily sunlight companion designed to help you track your exposure, set healthy goals, and reconnect with nature for better sleep and mood.
Cost / License
- Freemium
- Proprietary
Platforms
- iPhone
- Apple Watch


+5
A Python program that calculates ambient brightness and sets screen's correct backlight using a camera.

Stop burning your eyes! myPoint Shade is caring for your eyes' comfort.
If you work in a dark room or struggle with eye strain and headache, myPoint will tune up your displays - this way it will care for your health and comfort.
myPoint allows you to adjust the brightness o.


+2
Easy Invert sits in the tray and provides a context menu by which you can set the color filter to apply to the screen. A regular click on the tray icon turns the filter on or off. There are also more specific functions to discover.
Cost / License
- Free
- Proprietary
Platforms
- Windows



Cost / License
- Paid
- Proprietary
Platforms
- Mac



- 43 Lumen alternatives
Lumen - magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences.


- 52 Away From Keyboard (AFK) alternatives
Away From Keyboard is an app that reduces eye strain with reminders to take a break.
Cost / License
- Paid
- Proprietary
Platforms
- Mac




































