LightBulb 2.6 Gamma and temperature adjuster for Windows

Automatically changes the gamma and temperature of monitor.

LightBulb is a free and open source application that change the gamma and temperature of your display based on the time of the day.

The main reason for an application such as this is to reduce eye strain and create a more relaxing experience in front of the computer. Based on the time of day, it will follow the position of the sun and add a more orange hue as the sky gets darker. The transition is a slow fade.

There are multiple setup options with LightBulb from the settings menu. Here you can customize the time of sunset and sundown by manual configuration or you can use location-based detection to have the program do it for you.

Some other options available in LightBulb are gamma polling, gamma smoothing, application whitelists to disable color changes and a number of adjustments of brightness and color temperature.

All in all, LightBulb functions perfectly and highly recommended for people that spend too much time in front of a computer monitor.

Features of LightBulb

• Absolutely minimal impact on performance.
• Application whitelist for color-sensitive applications.
• Automatically calculate sunrise & sunset times based on configured location.
• Avoid changing gamma in games or other full-screen applications.
• Extensive customization options.
• Global hotkey to toggle the application from anywhere.
• Manually set desired sunrise & sunset times.
• Smooth gamma transitions that give time for eyes to adjust.
• Works without Internet connection.

Compatibility and License

LightBulb is a free application released under the GPLv3 license on Windows from desktop enhancement software. With software released under the open source GPLv3 license, anybody can download, install, run and distribute the software with little in terms of restrictions. The latest version we have is 2.6 and is available to download here.

Alexey Golub accepts donations for the continued development of this free software.

What version of Windows can LightBulb run on?

LightBulb can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It comes in both 32-bit and 64-bit downloads.

1. LightBulb Download
2. Free Desktop Enhancement Software
3. Open source and GPL software
4. Color Temperature Adjusting Software