Download of AutoExport 3.0 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 application lies within System Tools, more precisely Device Assistants. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X was originally designed by PaoloG.
From the developer:
AutoExport is an application that allows you to import and respectively, export files from a Siemens Step7 project. In addition, the program lets you place your logic files under SVN if they are similar. AutoExport is written using Java and can be run on multiple platforms, including Mac OS X.
You may want to check out more Mac applications, such as Portable Nvu or Matchprint Virtual, which might be related to AutoExport.