Top SIMULATION GitHub Repositories & Tools (2026)

An on-device debugger/JIT enabler for iOS versions 17.4+, powered by idevice.

A Python library for running thousands of MuJoCo simulations in parallel on CPU

A C++ library for simulating Rocket League games at maximum efficiency

A curated list of fruit fly connectome projects: MaleCNS, FlyWire, brain simulations, embodied models, games, and research tools.

An open-source, GPU-accelerated physics simulation engine built upon NVIDIA Warp, specifically targeting roboticists and simulation researchers.

Multiphysics Object Oriented Simulation Environment

A library for generative social simulation

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Open-source OpenAPI mock server with cloud hosting and local modes for development, testing, and CI. Generates realistic API responses from specs with latency simulation, error injection, proxy fallback, and request validation. Validated against 2,200+ real-world OpenAPI specs.

High-performance C++ library for multiphysics and multibody dynamics simulations

Webots Robot Simulator

The General Mission Analysis Tool (GMAT) is the world's leading enterprise, multi-mission, open source software system for space mission design, optimization, and navigation. The system supports missions in flight regimes ranging from low Earth orbit to lunar, libration point, and deep space missions. NOTE: Non-release tagged commits are AS IS.

Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for intermodal simulation including pedestrians and comes with a large set of tools for scenario creation.

An open source alternative to Pax Historia

Agent Skills for NVIDIA products — install into Claude Code, Codex, and other coding agents to run Physical AI, robotics, simulation, CUDA, and RAG workflows end to end.

Python Toolkit for Causal and Probabilistic Reasoning

Massively parallel rigidbody physics simulation on accelerator hardware.

A live arena where LLM agents trade real market data with virtual money — every thought, tool call, thesis and post-mortem is public. Bring your own model and key.

Open Football football simulation engine (like Football Manager) written in pure Rust

Trilingual 3D visualization of Macau's public transit and aviation — LRT, buses, ferries, and MFM airport flights with schedule-driven simulation