PeakFit is described as 'Nonlinear peak separation and analysis software package for scientists performing spectroscopy, chromatography and electrophoresis' and is an app. There are three alternatives to PeakFit for a variety of platforms, including Windows, Linux, Mac, BSD and Snapcraft apps. The best PeakFit alternative is LabPlot, which is both free and Open Source. Other great apps like PeakFit are NumeRe and Fityk.
LabPlot is a free, open source and cross-platform Data Visualization and Analysis software accessible to everyone and trusted by professionals.
Open source framework for numerical computations and advanced statistical analysis, featuring nonlinear curve fitting, ODE solving, 1D/2D publication-quality visualization, Fourier and wavelet transforms, intuitive syntax, and namespace-based code organization for research.
Fityk is a curve fitting and data analysis application, predominantly used to fit analytical, bell-shaped functions to experimental data. It is positioned to fill the gap between general plotting software and programs specific for one field, e.g. crystallography or XPS.
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