Fitspy Alternatives

Apps similar to Fitspy include LabPlot, which is free and open source. Other options are Fityk and PeakFit. In total there are three Calculators like Fitspy for Windows, Linux and Mac.

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Fitspy alternatives page was last updated Aug 12, 2026

LabPlot
17 likes
LabPlot is a free, open source and cross-platform Data Visualization and Analysis software accessible to everyone and trusted by professionals.
Cost / License
Free
Open Source (GPL-3.0)
Origin
Germany
EU
Platforms
Mac
Windows
Linux
BSD
Snapcraft
Flathub
Haiku
FreeBSD
Germany
EU
+8
Good alternative?Is LabPlot a good alternative to Fitspy?
Fityk
2 likes
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.
Cost / License
Free
Open Source
Platforms
Mac
Windows
Linux
+4
Good alternative?Is Fityk a good alternative to Fitspy?
PeakFit
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PeakFit is a nonlinear peak separation and analysis software package for scientists performing spectroscopy, chromatography and electrophoresis.
Cost / License
Paid
Proprietary
Origin
United States
Platforms
Windows
United States
Good alternative?Is PeakFit a good alternative to Fitspy?

3 of 3 Fitspy alternatives