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.
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Brisync Alternatives
Brisync is described as 'Synchronize your external monitor brightness with built-in display. Application reads current brightness of your built-in display and passes it to external monitors via DDC interface. You can adjust brightness by menu in system status bar' and is an app. There are more than 50 alternatives to Brisync for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best Brisync alternative is f.lux, which is free. Other great apps like Brisync are Twinkle Tray, Redshift, Solace and LightBulb.
Alternatives list
Brightness Controller easily allows windows users to set the brightness level of your LCD screen (It is very useful when your screen doesn't allow settings to be remembered without having to push many buttons on your screen!).
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Windows
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
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.
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Lumen - magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences.
EyeAway is a beautiful, privacy-first macOS app that helps reduce digital eye strain using the proven 20-20-20 rule. Every 20 minutes, look 20 feet away for 20 seconds - your eyes will thank you.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
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Away From Keyboard is an app that reduces eye strain with reminders to take a break.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
- 52 wl-gammactl alternatives
Small GTK GUI application to set contrast, brightness and gamma for wayland compositors which support the wlr-gamma-control protocol extension. Basically this is the example from here: https://github.com/swaywm/wlroots/blob/master/examples/gamma-control.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Linux
- Wayland
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