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 Temperature Monitoring Add a feature

783 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 Blue light filter Color Temperature Ajustment Command line interface ... Debian package compatible Fedora Repository KDE Widget Night mode Add a feature

198 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...

Free Open Source Windows Linux
No features added Add a feature

85 Like
- Discontinued The project seems to be no longer developed. Last version, 0.2.4, released in August 2014, can be still downloaded from GitHub.
LightBulb

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

Free Open Source Windows
Lightweight Configurable Customizable Blue light filter ... Night mode Optimal performance Portable Add a feature

39 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

42 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.

Free Personal Windows
Customizable Support for Keyboard Shortcuts Lightweight Portable ... Temperature Monitoring User-controlled day/night time Add a feature

29 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.

Free Windows
Automatic brightness dimming Portable Add a feature

19 Like
- Discontinued The program is no longer updated. Latest version, 1.0, released in March 2007, can be still downloaded from the official website.
Iris mini

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

Free Mac Windows Linux
No features added Add a feature

11 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

11 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...

Free Open Source Mac Windows Linux
Automatic brightness dimming Add a feature

9 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 extension Night mode Add a feature

23 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 Add a feature

3 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
No features added Add a feature

5 Like
iBrightness Tray

iBrightness Tray is a little bit of a swiss army knife display tool as adjusting the brightness of your screen is just one of three main functions it has. The other two...

Free Windows
No features added Add a feature

6 Like
- Discontinued The program is no longer updated. Last version, 1.0, released in 2013, can be still downloaded from the official website.
GoodNight

GoodNight is an IOS app developped by @anthonya1999 (Github).It allows you to adjust the screen temperature, brightness, and color. GoodNight isn't downloadable...

Free iPhone iPad
Night mode Add a feature

3 Like