Alternatives to Twilight for all platforms with any license

f.lux

Software that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
- Well It has a very nice pause feature! Very easy to use, and 1 of the best apps I have ever seen like this! Guest • Nov 2017 • 4 agrees and 0 disagrees
- works well, nice pause feature, very customizable. Guest • Mar 2017 • 2 agrees and 4 disagrees
Free Mac Windows Linux Android iPhone ... Android Tablet iPad
Blue light filter Color temperature modes Time Scheduling Colour control ... Simple installation Backlight brightness control Night mode/Dark Theme Scheduling Temperature Monitoring Add a feature

888 Like
Redshift

Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early...

Free Open Source Windows Linux BSD
Color Temperature Ajustment Color correction Blue light filter Command line interface ... Night mode/Dark Theme Portable Debian package compatible Fedora Repository KDE Widget System management Add a feature

234 Like
LightBulb

Background application that adjusts screen gamma, making the colors appear warmer at night, reducing strain on your eyes.

Free Open Source Windows
Customizable Lightweight Configurable Portable ... Blue light filter Night mode/Dark Theme Optimal performance Sane defaults Automatic brightness dimming Automatic Lighting Control Color correction Add a feature

70 Like
Red Moon

The app is free on F-Droid and on GitHub but you can buy it on the Google Play Store to support the developer. Red Moon is a screen filter app for night time phone...

Free Open Source Android F-Droid
Installable via F-droid Automatic brightness dimming Blue light filter Color correction ... Color Temperature Ajustment Time Scheduling Add a feature

38 Like
RedshiftGUI

RedshiftGUI changes the color temperature of your monitor to better match that of your surrounding. This means that it sets a cooler color temperature during the daytime...
- Discontinued
  The project seems to be no longer developed. Last version, 0.2.4, released in August 2014, can be still downloaded from GitHub.
Free Open Source Windows Linux
No features added Add a feature

89 Like
Iris mini

Iris mini is free cross-platform blue light reduction and PWM flicker free brightness software.

Freemium Mac Windows Linux
Blue light filter Add a feature

16 Like
Gammy

Adaptive screen brightness and temperature for Windows and Linux.

Free Open Source Windows Linux
Automatic brightness dimming Backlight brightness control Color Temperature Ajustment Automatic Lighting Control ... Blue light filter Color correction Gui Real-time Add a feature

9 Like
SunsetScreen

Whether you're a morning lark or night owl, SunsetScreen allows you to set the time of the sunset and sunrise, so you can have full control over your sleep cycle.
- You can set the exact time to dim screens, just like Twilight, and it not only adjusts colour but dims screen brightness, too. Two things that the leading competitor, Flux, doesn't do. Guest • Sep 2018
Commercial $ $ $ Windows
Customizable shortcuts Customizable Support for Keyboard Shortcuts Lightweight ... Portable Temperature Monitoring Add a feature

30 Like
Know any more alternatives to Twilight?
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Desktop Dimmer

Enables darker-than-dark Desktop dimming for your displays. - Small resource footprint, minimal User Interface. - Settings are persisted and restored per-Display...
- Discontinued
  The last commit to the project is from November, 16 2017 and it gave some users a bunch of deprecation errors when they tried to install and run it.
Free Open Source Mac Windows Linux
Automatic brightness dimming Add a feature

13 Like
Windows Night Light

Screens emit blue light, which can keep you up at night. Night light displays warmer colors to help you sleep.

Free Windows
Blue light filter Night mode/Dark Theme Add a feature

7 Like