You could have downloaded tnefDD 0.9.0.1 for Mac from our software library for free. Commonly, this program's installer has the following filename: tnefdd-0-9-0-1-mac-executa.zip. This app's bundle is identified as net.sourceforge.tnefDD. The most popular version of the application is 0.9. This free software for Mac OS X was originally created by sandymcg. The software lies within Design & Photo Tools, more precisely Viewers & Editors.
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, RealCADD or DropImageURL, which might be similar to tnefDD.