The 0.20.1 version of gsim for Mac was provided as a free download on our website. The program lies within Education Tools, more precisely Science. This free software for Mac OS X was originally designed by Vadim Zorin. Our built-in antivirus checked this Mac download and rated it as virus free.
From the developer:
GSim is a small application for NMR spectroscopy. This is a free application for visualisation and processing of experimental and simulated nuclear magnetic resonance (NMR) spectra. The application has an interactive interface. It is very easy to use by any user.
You may want to check out more Mac applications, such as Arcade Math Blocks, Genealogy Pro or Analytics to Earth, which might be similar to gsim.