TextureUnpacker 1.5 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 actual developer of this free software for Mac is sharezer. The program is categorized as Design & Photo Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Texture-Unpacker is an application that helps you disassemble the images packed with Texturepacker. All you need to do is drag in the desired file, and the utility will automatically identify and crop it, without affecting the size of the original image.
You may want to check out more software for Mac, such as Movie2Shot, TVPaint Animation or Cuadro, which might be similar to TextureUnpacker.