Simple Screen Brightness Adjuster is described as 'Simple Screen Brightness is a small portable application written in C# that allows you to adjust the brightness for all of your connected monitors using a slider without having to use their difficult-to-use built-in menu systems'. There are six alternatives to Simple Screen Brightness Adjuster for Windows and Mac. The best alternative is Dimmer, which is free. Other great apps like Simple Screen Brightness Adjuster are Win10_BrightnessSlider (Free, Open Source), MonitorControl (Free, Open Source), Lunar (Freemium) and EyeSavior (Free).
Win10_BrightnessSlider this app puts a Monitor Brightness icon to on Taskbar Tray. So you can access it with 1 click. tested on win10 build 10240 x64. Features Volume like Slider to Change Monitor Brightness Option to Run At Startup
EyeSavior is Windows utility that allows changing monitor brightness from desktop. You can change monitor brightness manually or if you have hardware light sensor monitor brightness will be changed automatically according to your settings.
ControlMyMonitor allows you view and modify the settings of your monitor (Also known as 'VCP Features'), like brightness, contrast, sharpness, red/green/blue color balance, OSD Language, Input Port (VGA , DVI , HDMI ) and more...