Splines Python Packages

csaps

Cubic spline approximation (smoothing)

xspline

Advanced spline package that provides b-spline bases, their derivatives and integrals

splinekit

SplineKit is a Python-based open-source software library aimed at the manipulation of one-dimensional periodic splines.

cssd

Smoothing splines for signals with discontinuities

pretab

pretab is a flexible and extensible preprocessing library for tabular data, built on top of scikit-learn. It provides advanced transformations, spline and neural feature expansions, and seamless integration with embeddings – all designed for modern tabular ML workflows.

tinyspline

ANSI C library for NURBS, B-Splines, and Bézier curves with interfaces for C++, C#, D, Go, Java, Javascript, Lua, Octave, PHP, Python, R, and Ruby.

dcebe

Estimation of bolus arrival times for DCE-MRI signals

splinecloud-scipy

A SplineCloud client based on SciPy.

splineops

Python and C++-based N-dimensional signal-processing library with support for GPU computing.

volsplineslib

VolSplinesLib is a Python library for interpolating implied volatility surfaces using various volatility models. The library provides tools for fitting and interpolating models to market data, supporting popular methods like RFV, SLV, SABR, and SVI.

sinflow

Sliced Iterative Normalizing Flow with Minimal Dependencies

scikit-numerical

Tools for numerical math calculations

ferreus-rbf

ferreus_rbf - Fast global radial basis function (RBF) interpolation in Rust and Python

ferreus-bbfmm

ferreus_rbf - Fast global radial basis function (RBF) interpolation in Rust and Python

splinterpy

Library for multivariate function approximation with splines (B-spline, P-spline, and more) with interfaces to C++, C, Python and MATLAB

extensible-splines

Python Spline Interpolation. Interactive plot for quick testing of new spline kernels or control point usage.

cinx

Minimal, differentible, fast cubic interpolation in JAX