In the past years there has been confusion, on the internet at least, about: what had happened to gNMR? You can still find the old home page; using Google, you arrive at this description on the "Adept Scientific" site, but if you search gNMR inside the Adept store itself (for example: to read the price tag) it says that no such product exists.
gNMR is a Windows program which you can use to simulate 1D spectra and compare them to their experimental counterpart. If you want to know more, please follow the above link.
Adept discontinued its marketing in May 2005. The author, Prof. Peter H.M. Budzelaar states that gNMR is now abandon-ware (not the word that he has used, but this is the concept). If you are interested, read the disclaimer, then read the license, then download the installer (25 MB).
At this price it's worth a try and you can go on without my review.