I'm trying to find as many products as I can that create disk images
like Norton Ghost and Drive Image do.  Besides these, I am only aware
of "Image for DOS" and "Image for Windows" by TeraByte Unlimited. 
Please provide me with the names of as many products as there are for
this functionality.  I'd like to know freeware, shareware and
commercial products

Hi! Thanks for the question.

I have found the following disk imaging software for you.

Acronis True Image 7.0
http://www.acronis.com/products/trueimage/

InstantRecovery
http://www.no-panic.com/recovery/irecover.html

DrvImagerXP v2.1 (Freeware)
http://www.freewareweb.com/cgi-bin/archive.cgi?ID=1601

Universal Imaging Utility 
http://www.binaryresearch.net/UIU.htm

ImageCast
http://www.imagecast.com.au/

Snapshot (Free Trial)
http://www.drivesnapshot.de/en/backup.htm

Paragon Drive Backup 6.0
http://www.drive-backup.com/

Ultrabac SADR 
http://www.ultrabac.com/kb5/htm/UBQ000061.htm

R-Drive Image 
http://www.drive-image.com/

7tools Partition Imager
http://www.7tools.com/pi/index.htm

Drive Star
http://www.star-tools.com/drivestar/english/

Disk Checker (Shareware)
http://www.pcworlddownload.com/system-utilities/backup-restore/Disk-Checker.htm


Search terms used:  
"disk imaging" software free image backup

I hope these links would help you in your research. Before rating this
answer, please ask for a clarification if you have a question or if
you would need further information.
                             
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Easterangel-ga                              
Google Answers Researcher

Very good list