Download of uDesktop HD 1.8.1 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. This Mac app is an intellectual property of Aperio Lux Team. We recommend checking the downloaded files with any free antivirus. The software lies within Theming Tools, more precisely Wallpapers.
From the developer:
uDesktop HD is not just your personal wallpaper manger, but a whole world of color and magic! Experience the full power and beauty of uDesktop HD. Here you can find the very wallpapers which you've been looking for for so long and use them to decorate your desktop!
Features: The wallpapers are presented in 32 different categories which are constantly being updated.
You may want to check out more software for Mac, such as uDesktop HD Lite, Tipard HD Converter for Mac or Leawo Mac HD Video Converter, which might be related to uDesktop HD.