Stat/Transfer 12.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X is an intellectual property of StataCorp. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Ever had a colleague send you an XYZ file that you wanted in ABC format--say an SPSS file that you wanted in Stata format or the other way around?
Stat/Transfer makes it easy to move data among the different spreadsheet and statistical programs by providing a fast and reliable way to convert files from one format to another.
You may want to check out more software for Mac, such as StatTransfer, which might be related to Stat/Transfer.