Duden Dictionaries 9.0.114 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. The following versions: 8.5 and 8.4 are the most frequently downloaded ones by the program users.
This app's bundle is identified as de.duden.MAC-dictionaries-container. We recommend checking the downloaded files with any free antivirus. You can run this application on Mac OS X 10.7 or later. This software for Mac OS X was originally developed by Bibliographisches Institut GmbH. The application is categorized as Education Tools.
From the developer:
Duden Dictionaries is an app that offers you word explanations with audio pronunciations recorded by native speakers.
You may want to check out more software for Mac, such as PASSWORD Semi-Bilingual English Dictionaries, English <-> German Slovoed Deluxe talking dictionary or dude, which might be related to Duden Dictionaries.