Monte Carlo Python Packages

dynesty

Dynamic Nested Sampling package for computing Bayesian posteriors and evidences

ultranest

Fit and compare complex models reliably and rapidly. Advanced nested sampling.

biosteam

The Biorefinery Simulation and Techno-Economic Analysis Modules

snowline

Fit and compare complex models quickly. Laplace Approximation, Variational Bayes, Importance Sampling.

pyhepmc

Easy-to-use Python bindings for HepMC3

stochastic-rs

High-performance quantitative finance in Rust and Python — 130+ stochastic processes, option pricing, calibration, fixed income, risk & copulas, with SIMD/GPU acceleration.

scientific-computing-system-2-0

Scientific computing platform on NumPy/SciPy/pandas/matplotlib: linear algebra, stats, optimization, signals, ML, information theory, chaos, Bayes, metaheuristics, geometry and RL.

modelx

Use Python like a spreadsheet!

serpenttools

A suite of parsers designed to make interacting with SERPENT output files simple and flawless

pmcx

Monte Carlo eXtreme (MCX) - Physically accurate and validated GPU ray-tracer

pmcxcl

Monte Carlo eXtreme for OpenCL (MCXCL)

personal-finance-etl

Local-first financial data platform for evidence-aware ETL, investment analytics, tax-aware wealth modelling, FIRE simulation, and BI.

kiyosi

Modern C++23 derivatives pricing with Python bindings: vanilla and exotic options, structured products, Greeks, and CUDA-accelerated Monte Carlo.

biorefineries

BioSTEAM's Premier Repository for Biorefinery Models and Results

packlab

Python/C++ toolkit for 3D hard-sphere systems: Percus–Yevick correlations, RSA packing, Metropolis Monte Carlo, and structure-aware scattering.

spindry

Low-cost host-guest conformer generation

pmmc

Mesh-based Monte Carlo (MMC)

symbolicdsge

A first and second-order DSGE engine with a fully symbolic and modifiable model backend. Includes estimation, monte carlo pipeline costruction, and regression-based equation augmentation capabilities

cost-core

Cost risk, EVM forecasts, DCMA schedule checks, JCL, AoA and portfolio choice for defense and space programs. As far as I can find, the first public Python package to do them all together. Excel in, report and briefing out, all on your own machine.

openbnct

Open, DICOM-native, transport-neutral BNCT research and independent-verification platform built in Rust, with an egui workbench and OpenMC first.

ebisu

Public-domain Python library for flashcard quiz scheduling using Bayesian statistics. (JavaScript, Java, Dart, and other ports available!)

revenue-model-builder

Bottom-up driver-based revenue forecasting: base × penetration × share × price, with structural residual alignment, A/B/C data grading, Monte Carlo + tornado sensitivity, and annual-report segment extraction. Pure Python stdlib.

mujoco-mojo

A complete MJCF lifecycle and trial orchestration suite for MuJoCo, powered by Pydantic v2.

smol

Statistical Mechanics on Lattices