Download of TreetopLights 2.4 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 free Mac application is Free Range Mac.
The bundle id for this application is com.freerangemac.treetoplights. The software relates to Theming Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The following versions: 2.4, 2.1 and 1.0 are the most frequently downloaded ones by the program users. TreetopLights2.4.dmg or TreetopLights2.1.dmg are the common file names to indicate this program's installer.
From the developer:
TreetopLights is an application that places a Christmas tree on the desktop and holiday lights on the menubar or screen edges. The desktop tree can be decorated with blinking or fading lights, ornaments, a treetop star, and perhaps some snow. A small assortment of lights are available, and custom lights can be designed and added for both the tree and screen lights.
You may want to check out more software for Mac, such as Kuvva Wallpapers, Multi Monitor Wallpaper or Mach Desktop 4K Free, which might be related to TreetopLights.