Download of Black Light 3.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is Michel Fortin.
Black Light for Mac lies within Design & Photo Tools, more precisely Viewers & Editors. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
With Black Light you can apply a combination of visual effects to your screen by manipulating the gamma curve. Opening Black Light will automatically apply the selected effects. Quitting the application will restore the original settings.
Reverse blacks and whites, giving you a negative of the image on your screen.
Dim Screen
Reduce screen luminosity by dimming each pixel.
You may want to check out more software for Mac, such as Light Blue, Lighten PDF to Word Converter for Mac or Dramatic Black & White, which might be similar to Black Light.
Other Mobile Utilities
Other Mobile Utilities