Download of X-Publish 1.25 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 software for Mac is Jonathan Harris. We recommend checking the downloaded files with any free antivirus. X-Publish for Mac is categorized as Productivity Tools.
From the developer:
X-Publish is an open-source tool that allows you to package up an X-Plane aircraft or scenery package into a cross-platform .zip archive for publication. The tool archives only the required files (skipping source files eg Photoshop or Blender files) and produces a report listing which files it has included and warning about any missing files.
You may want to check out more Mac applications, such as Centrify, BigCloud Archives or Everport - for moving 37signals' Backpack data to Evernote, which might be related to X-Publish.
Document management
Document management