DNSTrans 1.5 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. DNSTrans for Mac lies within System Tools, more precisely General. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X is a product of Summary.Net.
From the developer:
DNSTrans for OSX is for experts only, and involved a command-line version of this