Lunar
Lunar is a free, open-source desktop utility for macOS. Intelligent adaptive brightness for your external monitors. It has 5,725 GitHub stars and is released under the MIT license. Its source code is on GitHub at alin23/Lunar.
github.com/alin23/Lunar (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About Lunar
Lunar The defacto app for controlling monitors Adjust brightness, change volume, switch inputs Lunar changes the hardware brightness of the monitor using the DDC protocol.
Install Lunar
Package names found in the project's README. Each links to its package page so you can check the publisher first.
brew install --cask lunarSimilar apps
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Is Lunar free and open source?
Yes. Lunar's source code is public on GitHub under the MIT license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Lunar?
Homebrew: brew install --cask lunar. The commands are on this page. Installers are also on its GitHub Releases page (latest: v6.11.3).
Is Lunar still maintained?
The repository's most recent commit was on Oct 25, 2026. appsgit only lists apps whose repository had a commit in the last six months.