EasySpin is a MATLAB toolbox for simulating and fitting a wide range of Electron Paramagnetic Resonance (EPR) spectra. It supplements the numerical and visualization power of MATLAB with the best computational methods devised by EPR spectroscopists.

EasySpin runs on Windows, Linux and Mac, and is available free of charge.

Get latest version (5.1.5)

Currently, EasySpin is in part supported by the U.S. National Science Foundation. Former funding sources include the U.S. National Institutes of Health and the Swiss National Science Foundation.