Adjust brightness of connected displays in one place, Taskbar notification area, like your system volumes.
Now it supports light theme in Windows 10 May 2019 update (1903)
Look as beautiful as always.
Not all monitors are supporting brightness adjustment via software,
Please check with your hardware manufacturers to see if drivers are provided for Windows.
Or download a TRIAL to see if they are supported.
Consider purchase a copy to support further development, kindly share your feedback and issues in github.