CurveFit
A powerful curve fitting software
CurveFit launched on December 20, 2025.
What it does
A powerful curve fitting toolbox with built-in fitting of over 30 commonly used functions, no complex configuration, no need to write code, and no need to specify initial values to quickly fit, even beginners can easily get started.
A powerful curve fitting toolbox with built-in fitting of over 40 commonly used functions, no complex configuration, no need to write code, and no need to specify initial values to quickly fit, even beginners can easily get started.

All supported fitting models:

Polynomial:
 * Linear: y=ax+b
 * Quadratic: y=ax^2+bx+c
 * Cubic: y=ax^3+bx^2+cx&#
Does a similar job
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An easy-to-use online curve fitting toolNov 2025 · byx2000.github.io · ▲35This is a powerful online curve fitting tool that supports fitting dozens of commonly used functions and implicit functions. It features a clean interface and simple operation. If you need to perform curve fitting but don't want to learn professional software like Matlab or Origin, you can try this tool.
Python 3 tkinter graphical curve and surface fitter2016 · github.com · ▲25Python 3 tkinter graphical curve fitting and surface fitting application, saves results to PDF. - zunzun/tkInterFit


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