NFR = Not For Resale
This is software that is sold or given as demos for resellers, evaluation samples to large accounts, prizes for user groups, and sometimes for reseller employees to purchase.
The terms of a NFR license agreement will vary by manufacturer. Commonly, the end user is permitted to use the software for demonstration or education, but they are forbidden to sell the software or to give it away. Often, NFR versions are specifically not eligible to be upgraded to newer, commencial versions.
There are a few oddball licenses, such as Dreamweaver: if an Academic or NFR version of Dreamweaver is used for any commercial website work (that is, a "paying" job) then under the terms of the license the user must pay Macromedia the difference between the Academic/NFR price and the full retail price.
Remember that when you purchase software, you are not purchasing a "thing" but are purchasing a license to use some intellectual property under defined contract provisions. You agree to those provisions when you install the software. Different licenses have different costs and different terms of use.
Thanks
Trevor
CanadaRAM.com