Adobe Acrobat reader
You will need Acrobat Reader to view the various PDF files that you can download from this site.

Quicktime and Quicktime VR
To view animations and Quicktime VR files.

Viewpoint VET
For web-based 3D models.

MicroScribe support for OS X
The MicroScribe drivers for OS X have been updated. Download the updated drivers with the above link. Instructions are included in this download.