SpinDynamica is open-source and freely available for use.
For published work, please cite the following publication on SpinDynamica:
C. Bengs, M. H. Levitt, SpinDynamica: Symbolic and numerical magnetic resonance in a mathematica environment, Magn Reson Chem, 2017, DOI: 10.1002/mrc.4642
If you use one of the add-ons, please credit the author(s) of that as well. If you like SpinDynamica, please consider a small donation to Malcolm Levitt’s charity of choice: MAP. Thanks!