Alternatives to NightTone 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.

Free Mac Windows Linux Android iPhone ... Android Tablet iPad
Blue light filter Night mode/Dark Theme Scheduling Temperature Monitoring ... Time Scheduling Add a feature

833 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 correction Color Temperature Ajustment Command line interface Blue light filter ... Debian package compatible Fedora Repository KDE Widget Night mode/Dark Theme System management Add a feature

217 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 Portable Configurable ... Night mode/Dark Theme Automatic brightness dimming Automatic Lighting Control Blue light filter Color correction Optimal performance Add a feature

48 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
Twilight

The app filters the blue spectrum on your phone or tablet after sunset and protects your eyes with a red filter. The filter intensity is smoothly adjusted to the sun...

Free Android
Automatic brightness dimming Blue light filter Color correction Add a feature

45 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.
- Warning This software was previously clean, but the official website is now linking versions with a malware Cryptocurrency miner that will use the computers' resources while hidden in the background. It will also use Internet data, and could cause users to go over their internet plan, costing them money.
Free Personal Windows
Customizable Support for Keyboard Shortcuts Lightweight Portable ... Temperature Monitoring User-controlled day/night time Add a feature

29 Like
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

12 Like
PangoBright

Screen dimming software that allows you to control the brightness of your screens as well as external monitors.

Free Windows
Support for Multiple Monitors Portable Add a feature

13 Like
Iris mini

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

Freemium Mac Windows Linux
No features added Add a feature

13 Like
Dimmer

A very small and free utility for Windows to reduce brightness on LCD/TFT screens. A must if you work on your computer at night with very low ambient light.
- Discontinued The program is no longer updated. Latest version, 1.0, released in March 2007, can be still downloaded from the official website.
Free Windows
Automatic brightness dimming Portable Add a feature

19 Like
G.lux

G.lux is an unofficial variation of F.lux. G.lux is an app that automatically changes the colour temperature of your browser as the sun goes down. Monitors are typically...

Free Mac Windows Linux Chrome OS Chrome
Google Chrome Extensions Night mode/Dark Theme Add a feature

24 Like
Windows Night Light

Your display emits blue light—the kind of light you see during the day—which can keep you up at night.

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

5 Like
Screen Filter

Applies a shade that acts as a dimmer to ensure your eyes don't hurt. Far more powerful than Android's built-in brightness setting. Great for low-light gaming...

Free Android Android Tablet
Dimmer Add a feature

7 Like
Gammy

Adaptive screen brightness and temperature for Windows and Linux.

Free Open Source Windows Linux
Gui Add a feature

3 Like
CareUEyes

CareUEyes is a very simple but useful program when it is about your eye care. The program comes with a very simple and clean interface and needs to technical knowledge....

Commercial $ $ $ Windows
Automatic brightness dimming Blue light filter Add a feature

3 Like