Adjust brightness across multiple monitors on Windows using Monitorian, a desktop utility.
Open source
24 alternativesLightBulb
LightBulb adjusts screen gamma based on the time of day to reduce eye strain.
About LightBulb
LightBulb is an open-source application that reduces eyestrain from staring at a screen during late hours by adjusting display gamma through the day. It transitions color temperature from cold blue in the afternoon to warm yellow at night to match surrounding light sources.
It supports location-based or manual sunrise and sunset times, a whitelist for color-sensitive applications, and global hotkeys for adjustment. It works without an internet connection, while community-maintained install packages may not always be up to date.
Key features
- Continuously adjusts display gamma based on time of day
- Uses location-based sunrise and sunset times
- Allows manual sunrise and sunset times
- Whitelist for color-sensitive applications
- Global hotkeys for on-the-fly adjustments
- Works without internet connection
Best for: People who use a computer late at night and want display color matched to ambient light.
Good for
- Open source with MIT license
- Works without internet connection
- Minimal impact on performance
Watch out for
- Community-maintained install packages may not always be up to date with the latest release
LightBulb at a glance
- Website
- github.com/Tyrrrz/LightBulb
- Category
- Software & Utilities › Hardware & Diagnostics
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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