tnefDD is a OS X program that extracts attachments from TNEF formatted files (e.g., winmail.dat files), which can't directly be read by either Apple Mail or Microsoft Entourage. tnefDD features drag-and-drop operation for ease of use.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.