Helper Applications
Adobe® Reader®

The free Adobe Reader software, available for Windows, Macintosh, Linux and other operating systems, allows you to view and print PDF files.

QuickTime®

Apple's free QuickTime software, available for both Windows and Macintosh, allows you to play MP4 video files.

iTunes®

Apple's free iTunes software, available for both Windows and Macintosh, allows you to play MP3 audio files.

    
ZIP Archive Utilities

Some downloadable content on this site may be provided in a compressed "ZIP" archive file. This allows multiple files to be sent in a single download, compressed for faster transmission. Microsoft Windows XP and Mac OS X can read these files natively, and convert them back to their original formats. There are also free utilities available for other operating systems. We recommend StuffIt Expander™ by Allume Systems™.

Download StuffIt Expander for Windows
Download StuffIt Expander for Macintosh

Microsoft® Office

Microsoft Office, available for both Windows and Macintosh, includes Word, which allows you to open RTF files, and PowerPoint®, which allows you to open PowerPoint presentation files.

Learn about Microsoft Office for Windows
Learn about Microsoft Office for Macintosh