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Fityk vs SigmaPlot

Professional comparison and analysis to help you choose the right software solution for your needs.

Fityk icon
Fityk
SigmaPlot icon
SigmaPlot

Fityk vs SigmaPlot: The Verdict

⚡ Summary:

Fityk: Fityk is an open-source program for nonlinear fitting of analytical models to data. It has a graphical user interface and supports curve fitting and data visualization. Fityk supports many common fitting functions and can handle large data sets.

SigmaPlot: SigmaPlot is a graphing and scientific data analysis software. It allows users to easily visualize data, perform statistical analysis, and produce high-quality graphs for publications and presentations.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Fityk SigmaPlot
Sugggest Score — —
Category Science & Engineering Science & Engineering
Pricing Open Source —

Product Overview

Fityk
Fityk

Description: Fityk is an open-source program for nonlinear fitting of analytical models to data. It has a graphical user interface and supports curve fitting and data visualization. Fityk supports many common fitting functions and can handle large data sets.

Type: software

Pricing: Open Source

SigmaPlot
SigmaPlot

Description: SigmaPlot is a graphing and scientific data analysis software. It allows users to easily visualize data, perform statistical analysis, and produce high-quality graphs for publications and presentations.

Type: software

Key Features Comparison

Fityk
Fityk Features
  • Nonlinear curve fitting
  • Built-in fitting functions
  • Custom user-defined functions
  • Interactive graphical user interface
  • Data visualization
  • Command line interface
  • Scripting language for automation
  • Multi-threading for faster computation
  • Data analysis tools
SigmaPlot
SigmaPlot Features
  • 2D and 3D graphing
  • Statistical analysis tools
  • Customizable graphs and templates
  • Data fitting and regression analysis
  • Macro programming and automation
  • Publication-quality output
  • Supports multiple data formats
  • Cross-platform compatibility

Pros & Cons Analysis

Fityk
Fityk

Pros

  • Free and open source
  • Cross-platform availability
  • User-friendly GUI
  • Powerful fitting capabilities
  • Customizable and extensible
  • Efficient computation engine
  • Can handle large data sets
  • Great community support

Cons

  • Steep learning curve
  • Limited documentation
  • Not very beginner friendly
  • GUI needs more polish
  • Lacks some advanced analysis features
SigmaPlot
SigmaPlot

Pros

  • Powerful graphing capabilities
  • Intuitive and easy to use interface
  • Comprehensive statistical analysis tools
  • Highly customizable graphs and templates
  • Automation through macros
  • Great for academic research and publications

Cons

  • Expensive for individual users
  • Limited trial version
  • Steep learning curve for advanced features
  • Macros can be tricky to program
  • Lacks some advanced statistical methods

Pricing Comparison

Fityk
Fityk
  • Open Source
SigmaPlot
SigmaPlot
  • Not listed

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Learn More About Each Product

Fityk
Fityk
Reviews, pricing & alternatives →
SigmaPlot
SigmaPlot
Reviews, pricing & alternatives →

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