CareUEyes Lite

CareUEyes Lite is the free version of CareUEyes, which will allow you to control the brightness of your monitor quickly, from the drop-down menu in the program bar, right next to the Windows clock. You can set it to 20%, 40%, 60%, 80% and 100%. This way, when the lighting inside your room is reduced, you can quickly adjust the brightness of the screen with a single click.

CareUEyes Lite only takes up 600KB and hardly consumes any RAM, so the program works perfectly on almost any computer. If you want to access a much wider range of options, you can also purchase the PRO version directly from the drop-down menu in Windows.