The 2.2.1 version of MacIPAC for Mac was available to download 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. This software for Mac OS X was originally developed by Evolution Interactive. We recommend checking the downloaded files with any free antivirus.
From the developer:
MacIPAC lets you configure the I-PAC to output the proper keys for any of your software or emulators. MacIPAC will also help you test your connections to make sure that your hardware is set up correctly. Every time you make a change within MacIPAC, your I-PAC device is automatically updated.
You may want to check out more software for Mac, such as toDoo, Matchprint Virtual or NWD-211AN Utility, which might be similar to MacIPAC.