Download of HoudahGPS 8.1.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software is included in Internet & Network Tools. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is Houdah Software.
From the developer:
HoudahGPS is a simplified front-end to the open source command line tool GPSBabel.
You may want to check out more software for Mac, such as Acqlite, FreeRapid Downloader or Web Dumper, which might be similar to HoudahGPS.