Alternatives and similar repositories for lmfit-py

Users that are interested in lmfit-py are comparing it to the libraries listed below

• lmfit / uncertainties

  View on GitHub
  Transparent calculations with uncertainties on the quantities involved (aka "error propagation"); calculation of derivatives.
  ☆653Jan 21, 2026Updated 3 weeks ago
• tBuLi / symfit

  View on GitHub
  Symbolic Fitting; fitting as it should be.
  ☆244Jan 8, 2024Updated 2 years ago
• scikit-hep / iminuit

  View on GitHub
  Jupyter-friendly Python interface for C++ MINUIT2
  ☆313Feb 9, 2026Updated last week
• dfm / corner.py

  View on GitHub
  Make some beautiful corner plots
  ☆559Jan 19, 2026Updated 3 weeks ago
• ICB-DCM / pyPESTO

  View on GitHub
  python Parameter EStimation TOolbox
  ☆266Updated this week
• joshspeagle / dynesty

  View on GitHub
  Dynamic Nested Sampling package for computing Bayesian posteriors and evidences
  ☆398Nov 29, 2025Updated 2 months ago
• proplot-dev / proplot

  View on GitHub
  🎨 A succinct matplotlib wrapper for making beautiful, publication-quality graphics
  ☆1,148Feb 27, 2025Updated 11 months ago
• hyperspy / hyperspy

  View on GitHub
  Multidimensional data analysis
  ☆560Jan 29, 2026Updated 2 weeks ago
• sigma-py / quadpy

  View on GitHub
  Numerical integration (quadrature, cubature) in Python
  ☆785Apr 4, 2023Updated 2 years ago
• aplpy / aplpy

  View on GitHub
  Astronomical Plotting Library in Python
  ☆177Dec 1, 2025Updated 2 months ago
• pbrod / numdifftools

  View on GitHub
  Solve automatic numerical differentiation problems in one or more variables.
  ☆278Jan 6, 2026Updated last month
• jonathf / chaospy

  View on GitHub
  Chaospy - Toolbox for performing uncertainty quantification.
  ☆469Sep 4, 2025Updated 5 months ago
• astropy / specutils

  View on GitHub
  An Astropy coordinated package for astronomical spectroscopy. Maintainers: @rosteen @keflavich @eteq
  ☆195Feb 5, 2026Updated last week
• dfm / emcee

  View on GitHub
  The Python ensemble sampling toolkit for affine-invariant MCMC
  ☆1,564Jan 19, 2026Updated 3 weeks ago
• holoviz / colorcet

  View on GitHub
  A set of useful perceptually uniform colormaps for plotting scientific data
  ☆726Dec 17, 2025Updated last month
• vispy / vispy

  View on GitHub
  Main repository for Vispy
  ☆3,542Jan 14, 2026Updated last month
• matplotlib / pytest-mpl

  View on GitHub
  A pytest plugin to facilitate image comparison for Matplotlib figures
  ☆267Jan 13, 2026Updated last month
• uqfoundation / mystic

  View on GitHub
  constrained nonlinear optimization for scientific machine learning, UQ, and AI
  ☆491Jan 24, 2026Updated 3 weeks ago
• perwin / imfit

  View on GitHub
  Imfit: an open-source astronomical image-fitting program.
  ☆35Jul 25, 2024Updated last year
• usnistgov / pyMCR

  View on GitHub
  pyMCR: Multivariate Curve Resolution for Python
  ☆91Oct 26, 2021Updated 4 years ago
• pyqtgraph / pyqtgraph

  View on GitHub
  Fast data visualization and GUI tools for scientific / engineering applications
  ☆4,292Updated this week
• pyspeckit / pyspeckit

  View on GitHub
  Python Spectroscopic Toolkit
  ☆111Jul 3, 2025Updated 7 months ago
• thouska / spotpy

  View on GitHub
  A Statistical Parameter Optimization Tool
  ☆273May 28, 2025Updated 8 months ago
• pymeasure / pymeasure

  View on GitHub
  Scientific measurement library for instruments, experiments, and live-plotting
  ☆714Jan 27, 2026Updated 2 weeks ago
• SALib / SALib

  View on GitHub
  Sensitivity Analysis Library in Python. Contains Sobol, Morris, FAST, and other methods.
  ☆970Dec 24, 2025Updated last month
• pydata / xarray

  View on GitHub
  N-D labeled arrays and datasets in Python
  ☆4,086Updated this week
• pypeit / PypeIt

  View on GitHub
  The Python Spectroscopic Data Reduction Pipeline
  ☆192Updated this week
• sfepy / sfepy

  View on GitHub
  Main SfePy repository
  ☆824Updated this week
• zfit / zfit

  View on GitHub
  Model manipulation and fitting library based on TensorFlow and optimised for simple and direct manipulation of probability density functi…
  ☆199Feb 3, 2026Updated last week
• pydata / bottleneck

  View on GitHub
  Fast NumPy array functions written in C
  ☆1,162Feb 6, 2026Updated last week
• 1313e / CMasher

  View on GitHub
  Scientific colormaps for making accessible, informative and 'cmashing' plots
  ☆472Jan 5, 2026Updated last month
• yt-project / unyt

  View on GitHub
  Handle, manipulate, and convert data with units in Python
  ☆379Feb 2, 2026Updated 2 weeks ago
• chemreac / chemreac

  View on GitHub
  Library for chemical kinetics in homogeneous or isotropically symmetric inhomogenous systems.
  ☆15May 6, 2023Updated 2 years ago
• glue-viz / glue

  View on GitHub
  Linked Data Visualizations Across Multiple Files
  ☆775Updated this week
• SWOTAlgorithms / Raster-Processor

  View on GitHub
  SWOT Raster Processor
  ☆12Feb 7, 2025Updated last year
• yymao / adstex

  View on GitHub
  Automated generation of NASA ADS bibtex entries directly from citation keys in your TeX source files
  ☆186May 12, 2025Updated 9 months ago
• SURGroup / UQpy

  View on GitHub
  UQpy (Uncertainty Quantification with python) is a general purpose Python toolbox for modeling uncertainty in physical and mathematical s…
  ☆343Nov 30, 2025Updated 2 months ago
• h5py / h5py

  View on GitHub
  HDF5 for Python -- The h5py package is a Pythonic interface to the HDF5 binary data format.
  ☆2,201Updated this week
• scipy / scipy

  View on GitHub
  SciPy library main repository
  ☆14,451Updated this week