SpiritJS 1.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software belongs to Design & Photo Tools. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X is a product of Inlet.
From the developer:
SpiritJS is the animation-tool that will change the way you create animations for the web. With it you can animate various viewable objects on your pages.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be related to SpiritJS.