EMPeaks

EMPeaks is an open-source analysis package that performs fast, automated peak deconvolution and fitting for spectroscopy data such as XPS and Raman by treating spectra as mixture probability distributions and applying Spectrum-Adapted EM/ECM algorithms. It also supports automated background subtraction and multiple peak functions (Gaussian, Lorentzian, Pseudo-Voigt, Doniach–Šunjić, etc.), enabling high-throughput batch analysis of large datasets.