Downloading JImageMan 1.3.4 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X is an intellectual property of Jason Adams. The program lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
JImageMan is a digital image manager for your Mac. The tool can organize your photos by filename, tags, and dates. One notable feature is the metadata or tags are stored in the image file itself so that when you move your image library the metadata and all the tagging work you did goes with the images.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be similar to JImageMan.