WebElements  
   This is the home page of WebElements, the periodic table of the elements. It has NMR data toward the bottom left of each element page.
   http://www.webelements.com/

NMR Periodical table  
   A very useful NMR Periodic table. You will need the Shockwave plugin. Excellent resource, reliable, accurate and extensive. Abundance of coupling constants.
   http://web.chem.queensu.ca/FACILITIES/NMR/nmr/webcourse/ptable.htm

NMR Periodic Table  
   Has information on each NMR active element, such as the gyromagnetic ratio. Useful information.
   http://arrhenius.rider.edu/nmr/NMR_tutor/periodic_table/nmr_pt_frameset.html

Alexej Jerschow's Interactive NMR Frequency Map  
   Very useful resource. You enter the proton Frequency, the range you want to see, and the spin. The table prints out a very handy chart of the receptivety of the different nuclei.
   http://www.nyu.edu/cgi-bin/cgiwrap/aj39/NMRmap.cgi

From the NHMFL  
   Periodic table with the resonant frequencies of the various magnet at NHMFL are listed.
   http://nmr.magnet.fsu.edu/resources/nuclei/table.htm

Solid State Periodic Table  
   A periodic table specifically for Solid State NMR and quadrapolar nuclei.
   http://www.pascal-man.com/periodic-table/periodictable.html