Mashduo 1.5.3 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.
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. The most popular version of the tool is 1.0. The bundle identifier for Mashduo for Mac is com.Mahsduo.Mashduo. Mashduo for Mac is included in System Tools. The application's installer is commonly called Mashduo.zip. This free Mac app was originally created by Mashduo.
From the developer:
Mashduo lets you compare your iTunes music with all of your friends. You just need to drag and drop in you and your friend's iTunes library files, and Mashduo will compare them. You'll get a report of all the songs you two don't share. You can then export to a file or email the list to your friend. You can even zip up all the songs your friend doesn't have, so you can let your friend sample them.
You may want to check out more software for Mac, such as Mac ScanAndSweep, DataLore or NotLight, which might be similar to Mashduo.