tnefDD 0.9.0.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The tnefDD installer is commonly called tnefdd-0-9-0-1-mac-executa.zip.
We recommend checking the downloaded files with any free antivirus. This app's bundle is identified as net.sourceforge.tnefDD. The application lies within Design & Photo Tools, more precisely Viewers & Editors. This free Mac application is a product of sandymcg. The most popular version among tnefDD for Mac users is 0.9.
From the developer:
tnefDD is a program for Mac OS X that extracts attachments from TNEF format files. It is built as a modern OS X application with all the ease of use features like drag-and-drop that OS X user expect, and runs on Intel- and PowerPC-based Mac computers.
You may want to check out more Mac applications, such as Vectorworks 2010 Viewer, TurboCAD Mac Designer or DropImageURL, which might be similar to tnefDD.