Open-source simulation software
698 open-source libraries, tools and applications tagged simulation, ranked by how closely simulation is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
698 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| mani-skill/ManiSkill ManiSkill is an open-source GPU-parallelized robotics simulation framework and benchmark built on SAPIEN, focused on manipulation skills. I… | 85 | 3442 | active |
| AcademySoftwareFoundation/openvdb OpenVDB is an Academy Award-winning open-source C++ library providing a hierarchical data structure and tool suite for efficiently storing … | 89 | 3427 | stable |
| PhysicsNeMo NVIDIA PhysicsNeMo is an open-source Python deep-learning framework for building, training, fine-tuning, and inferring physics AI models us… | 93 | 3373 | active |
| synthetichealth/synthea Synthea is an open-source synthetic patient population simulator that generates realistic but not real patient health records. It models pa… | 84 | 3366 | active |
| hunar4321/particle-life A simple artificial life simulator that applies attraction and repulsion forces between many particles to produce complex self-organizing, … | 23 | 3361 | active |
| Farama-Foundation/HighwayEnv HighwayEnv is a collection of Gymnasium environments for autonomous driving and tactical decision-making tasks, covering scenarios like hig… | 92 | 3325 | active |
| pafuhana1213/KawaiiPhysics KawaiiPhysics is a simple pseudo-physics plugin for Unreal Engine 4 & 5 that animates secondary motion like hair, skirts, and breasts on ch… | 83 | 3313 | active |
| virtualagc/virtualagc Virtual AGC is a project providing emulators for the Apollo Guidance Computer (AGC), Abort Guidance System (AGS), and related peripherals l… | 68 | 3308 | active |
| 2Retr0/GodotOceanWaves An open-source Godot Engine addon implementing FFT-based ocean-wave rendering using inverse Fourier transforms of directional ocean-wave sp… | 30 | 3299 | active |
| amov-lab/Prometheus Prometheus is an open-source autonomous drone software system platform built on PX4 flight controller firmware and ROS. It provides onboard… | 53 | 3270 | active |
| ANYbotics/grid_map A C++ library with a ROS interface for managing multi-layered 2D grid maps for mobile robotic mapping, storing data like elevation, travers… | 47 | 3252 | active |
| avianphysics/avian Avian is an ECS-driven 2D and 3D physics engine built natively for the Bevy game engine in Rust. It provides rigid body dynamics, collision… | 96 | 3248 | active |
| NVIDIAGameWorks/Falcor Falcor is NVIDIA's open-source real-time rendering framework for rapid prototyping of graphics research, built on DirectX 12 and Vulkan. It… | 86 | 3237 | active |
| PanosK92/SpartanEngine Spartan Engine is a C++ game engine built over 12+ years by a single developer, featuring a fully bindless, GPU-driven renderer with real-t… | 86 | 3190 | active |
| MaxBittker/sandspiel Sandspiel is a creative falling-sand browser game implementing cellular automata, written in Rust and compiled to WebAssembly with WebGL re… | 75 | 3169 | active |
| mjlab mjlab is a Python framework that combines Isaac Lab's manager-based API with MuJoCo Warp, a GPU-accelerated version of MuJoCo, for reinforc… | 82 | 3163 | active |
| openrocket/openrocket OpenRocket is a free, open-source model rocket simulator written in Java for designing and simulating rockets before building and flying th… | 66 | 3129 | active |
| lammps/lammps LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator) is an open-source classical molecular dynamics simulation code focused o… | 95 | 3104 | stable |
| mangos/MaNGOS MaNGOS is an open-source MMORPG server emulation project, originally announced in 2005, that implements game server software for older vers… | 60 | 3103 | active |
| OpenWorm OpenWorm is an open-source project building a comprehensive bottom-up computational model of the Caenorhabditis elegans roundworm, integrat… | 75 | 3063 | active |
| projectchrono/chrono Project Chrono is a high-performance, open-source C++ multiphysics simulation library for multibody dynamics, finite element analysis, gran… | 77 | 3053 | stable |
| project64/project64 Project64 is a free, open-source Nintendo 64 and 64DD emulator written in C++ for Windows. It plays N64 games with high-definition graphics… | 75 | 3047 | active |
| HungryProton/scatter ProtonScatter is a Godot 4 add-on that procedurally and non-destructively automates the placement of props and scenes within an area. It us… | 66 | 3013 | active |
| GaijinEntertainment/DagorEngine Dagor Engine is the proprietary game engine and toolchain source code from Gaijin Games (creators of War Thunder), released for public use.… | 88 | 2977 | active |
| guillaumeblanc/ozz-animation ozz-animation is an open source C++ 3D skeletal animation library and toolset providing runtime character animation playback (sampling, ble… | 79 | 2967 | stable |
| BEPUphysics bepuphysics v2 is a pure C# 3D real-time rigid body physics simulation library targeting .NET 8. It provides collision shapes, constraints,… | 86 | 2961 | active |
| sharpie7/circuitjs1 CircuitJS1 is an electronic circuit simulator that runs entirely in the browser, ported from Paul Falstad's original Java applet using GWT.… | 32 | 2954 | active |
| Renode Renode is an open-source simulation and virtual development framework for complex embedded systems, letting you run unmodified firmware on … | 85 | 2938 | active |
| Tencent-Hunyuan/HunyuanWorld-1.0 Tencent HunyuanWorld-1.0 is an open-source 3D world generation model that creates immersive, explorable, and interactive 3D worlds from tex… | 50 | 2936 | active |
| Mitsuba 3 Mitsuba 3 is a research-oriented, retargetable rendering system for forward and inverse light transport simulation, written in C++17 on top… | 90 | 2928 | active |
| RoboTwin-Platform/RoboTwin RoboTwin 2.0 is a scalable benchmark and data-generation platform for bimanual (dual-arm) robotic manipulation, built on simulated digital … | 66 | 2914 | active |
| Open-Cascade-SAS/OCCT Open CASCADE Technology (OCCT) is an open-source C++ development platform for 3D surface and solid modeling, CAD data exchange, and visuali… | 88 | 2910 | stable |
| Syomus/ProceduralToolkit Procedural Toolkit is a procedural generation (PCG) programming library for the Unity game engine, written in C#. It provides algorithms an… | 23 | 2910 | active |
| GHDL GHDL is an open-source analyzer, compiler, simulator, and experimental synthesizer for the VHDL hardware description language, supporting I… | 79 | 2907 | active |
| imsai-sh/zhuzhiliao A zero-dependency, single-file web simulation of the traditional Chinese bamboo cicada toy (竹知了) that 'wa-wa' cries when spun. It combines … | 53 | 2883 | active |
| IfcOpenShell/IfcOpenShell IfcOpenShell is an open source C++ and Python library for parsing and working with Industry Foundation Classes (IFC) building models, inclu… | 95 | 2865 | active |
| eduard-permyakov/permafrost-engine Permafrost Engine is an OpenGL 3.3 real-time strategy game engine written in C, inspired by classic RTS games. It provides rendering, skele… | 76 | 2767 | active |
| RenderKit/embree Intel Embree is a high-performance ray tracing kernel library providing optimized primitive intersection and acceleration structure constru… | 76 | 2756 | stable |
| TWIST GMR is a Python library for general motion retargeting that converts human motions into joint commands for diverse humanoid robots in real … | 49 | 2741 | active |
| Play! Play! is a cross-platform PlayStation 2 emulator written in C++ that uses a built-in high-level emulation BIOS, so no external BIOS file is… | 77 | 2714 | active |
| robosuite robosuite is a modular simulation framework powered by the MuJoCo physics engine for robot learning, offering standardized benchmark enviro… | 66 | 2643 | active |
| kavan010/black_hole A C++ black hole simulation that uses ray tracing and GPU compute shaders to render gravitational lensing, accretion disks, and spacetime c… | 51 | 2643 | active |
| Tencent-Hunyuan/HY-Motion-1.0 HY-Motion 1.0 is a series of text-to-3D human motion generation models from Tencent Hunyuan, based on Diffusion Transformer and Flow Matchi… | 55 | 2574 | active |
| simbody/simbody Simbody is a high-performance open-source C++ multibody dynamics library for science- and engineering-quality simulation of articulated mec… | 66 | 2552 | stable |
| nikmcfly/MiroFish-Offline MiroFish-Offline is a fully local, English-language fork of MiroFish, a multi-agent swarm intelligence engine that simulates public opinion… | 44 | 2538 | active |
| Roboto Origin A fully open-source DIY humanoid robot project (ROBOTO_ORIGIN) that can walk and run, including all hardware designs, electronics, training… | 59 | 2537 | active |
| nortikin/sverchok Sverchok is a powerful visual programming addon for Blender that enables parametric geometry creation through a node-based interface. It pr… | 74 | 2525 | active |
| Farama-Foundation/Minigrid Minigrid is a Python library of lightweight, easily configurable discrete grid-world environments for reinforcement learning research, foll… | 80 | 2523 | active |
| amap-cvlab/ABot-World ABot-World is an open-source interactive world model that generates infinite, explorable video worlds from a single image, running on a sin… | 57 | 2513 | active |
| KsanaDock/Microverse Microverse is a god-simulation sandbox game built on Godot 4 that implements a multi-agent AI social simulation. AI characters have indepen… | 48 | 2500 | active |
| NASA-AMMOS/3DTilesRendererJS A JavaScript library that renders OGC 3D Tiles tilesets using Three.js, Babylon.js, or React Three Fiber. It supports most of the 3D Tiles … | 97 | 2476 | active |
| BeyondMimic Motion Tracking BeyondMimic's official motion tracking training code, a humanoid control framework built on Isaac Lab that trains sim-to-real-ready whole-b… | 10 | 2444 | active |
| ange-yaghi/engine-sim A real-time internal combustion engine simulator that generates realistic engine audio and simulates engine response characteristics. It is… | 23 | 9573 | maintenance |
| slembcke/Chipmunk2D Chipmunk2D is a fast, lightweight 2D rigid body physics library written in C99 with no external dependencies. It provides collision detecti… | 65 | 2409 | stable |
| ArduPilot/MissionPlanner Mission Planner is the primary open-source ground control station (GCS) for ArduPilot autopilots, written in C#/.NET. It provides point-and… | 68 | 2399 | active |
| NVlabs/ProtoMotions ProtoMotions is a GPU-accelerated simulation and reinforcement learning framework for training physically simulated digital humans and huma… | 66 | 2392 | active |
| idaholab/moose MOOSE is a finite-element, multiphysics simulation framework developed by Idaho National Laboratory, built on top of PETSc's nonlinear solv… | 77 | 2388 | stable |
| johnBuffer/AntSimulator A simple 2D ant colony simulator written in C++ with SFML, showing emergent foraging behavior with pheromone trails. It supports interactiv… | 37 | 2381 | active |
| OctoMap/octomap OctoMap is a C++ library providing an efficient probabilistic 3D mapping framework based on octrees, with occupancy representation and volu… | 85 | 2378 | stable |
| Cxbx-Reloaded Cxbx-Reloaded is an open-source emulator that runs original Microsoft Xbox games on Windows and Linux via Wine. It uses high-level emulatio… | 75 | 2378 | active |
| zhm-real/PathPlanning A Python collection of common robotics path planning algorithms, covering search-based methods (Dijkstra, A* and variants, D* Lite) and sam… | 32 | 9362 | maintenance |
| CelestiaProject/Celestia Celestia is a free, open-source real-time 3D space simulation that lets users explore the universe, traveling seamlessly from galaxy cluste… | 67 | 2373 | active |
| xbpeng/MimicKit MimicKit is a lightweight Python framework providing a suite of motion imitation methods (DeepMimic, AMP, ASE, AWR, and others) for trainin… | 51 | 2360 | active |
| NavMeshPlus NavMeshPlus is a Unity library that extends Unity's NavMeshComponents with 2D pathfinding support, generating navigation meshes from tilema… | 74 | 2356 | active |
| SkyworkAI/Matrix-Game Matrix-Game is Skywork AI's open-source series of interactive world foundation models that generate real-time, streaming video in response … | 50 | 2342 | active |
| nschloe/meshio meshio is a Python library for reading and writing many unstructured mesh file formats (VTK, Gmsh, Exodus, CGNS, MED, Nastran, and more), s… | 23 | 2329 | stable |
| CHAMP CHAMP is an open-source ROS-based development framework for building quadruped robots and developing locomotion control algorithms, based o… | 32 | 2323 | active |
| MCHPR/MCHPRS MCHPRS is a multithreaded Minecraft 1.20.4 creative server written in Rust, purpose-built for computational redstone. Each 512x512 plot run… | 83 | 2321 | active |
| amilich/isometric-city IsoCity is an open-source isometric city-building simulation game built with Next.js, TypeScript, and HTML5 Canvas, featuring traffic, pede… | 60 | 2319 | active |
| casadi/casadi CasADi is an open-source symbolic framework for gradient-based numerical optimization, implementing forward and reverse mode automatic diff… | 93 | 2307 | stable |
| JSBSim-Team/jsbsim JSBSim is an open-source, object-oriented flight dynamics model (FDM) written in C++ that simulates the nonlinear 6-DoF motion of aircraft … | 95 | 2303 | stable |
| InteractiveComputerGraphics/PositionBasedDynamics A C++ library for physically-based simulation of rigid bodies, deformable solids and fluids using position-based dynamics methods. It is de… | 64 | 2291 | active |
| kennetek/gridfinity-rebuilt-openscad A parametric OpenSCAD library that rebuilds the Gridfinity storage bin system from the ground up, allowing fully customizable bins for 3D p… | 37 | 2285 | active |
| AcademySoftwareFoundation/MaterialX MaterialX is an open standard and C++/Python library for representing and exchanging rich material and look-development content across comp… | 81 | 2282 | stable |
| gaphor/gaphor Gaphor is an open-source UML and SysML modeling application written in Python with GTK. It implements a fully-compliant UML 2 data model an… | 82 | 2277 | active |
| MFEM MFEM is a lightweight, modular C++ library for finite element discretization of PDEs, supporting arbitrary high-order element spaces, adapt… | 85 | 2258 | stable |
| erichlof/THREE.js-PathTracing-Renderer A real-time path tracing renderer built on top of the Three.js WebGL framework, providing global illumination, progressive rendering, refle… | 70 | 2252 | active |
| google-deepmind/mujoco_playground MuJoCo Playground is an open-source Python library of GPU-accelerated robot learning environments built on MuJoCo MJX and MuJoCo Warp. It s… | 74 | 2250 | active |
| FakeFishGames/Barotrauma Barotrauma is a 2D online multiplayer survival game set in a submarine traveling the icy ocean beneath Jupiter's moon Europa, with source c… | 71 | 2249 | active |
| OpenFOAM OpenFOAM-dev is the development repository of OpenFOAM, a free, open-source C++ toolkit for computational fluid dynamics (CFD) maintained b… | 75 | 2244 | active |
| unrealcv/unrealcv UnrealCV is an open-source Unreal Engine plugin that connects computer vision research to virtual worlds by exposing a command API and Pyth… | 94 | 2219 | active |
| ZJU-FAST-Lab/ego-planner-swarm EGO-Swarm is a decentralized, asynchronous trajectory planner for single and multi-agent quadrotor navigation in unknown, obstacle-rich env… | 33 | 2197 | stable |
| learnsyslab/gym-pybullet-drones A Python library providing PyBullet-based Gymnasium environments for simulating quadcopter control in single- and multi-agent reinforcement… | 68 | 2173 | active |
| CytopiaTeam/Cytopia Cytopia is a free, open-source retro pixel-art city building simulation game with a focus on modding. It uses a custom isometric rendering … | 67 | 2171 | active |
| PyPSA/PyPSA PyPSA is an open-source Python framework for optimising and simulating power and energy systems, covering conventional generators with unit… | 95 | 2162 | stable |
| Open Motion Planning Library (OMPL) OMPL is an open-source C++ library of over 40 sampling-based motion planning algorithms (RRT-Connect, PRM, RRT*, KPIECE, etc.) across more … | 90 | 2156 | stable |
| ZiYang-xie/WorldGen WorldGen is a Python library that generates full 3D scenes in seconds from text prompts or images, supporting 360-degree consistent explora… | 51 | 2150 | active |
| LeCAR-Lab/ASAP ASAP is a two-stage framework for training agile humanoid whole-body skills by aligning simulation and real-world physics. It pre-trains mo… | 45 | 2130 | active |
| vvoovv/blosm Blosm is a Blender addon that imports real-world geodata—OpenStreetMap buildings and roads, Google 3D city tiles, and terrain—with global c… | 65 | 2128 | active |
| a-b-street/abstreet A/B Street is a transportation planning and traffic simulation application for exploring how street edits affect walking, biking, and publi… | 38 | 8185 | maintenance |
| facebookresearch/ai4animationpy AI4AnimationPy is a Python framework for AI-driven character animation using neural networks, providing motion capture processing, training… | 56 | 2111 | active |
| 4thfever/cultivation-world-simulator An open-source AI-driven Cultivation (Xianxia) world simulator where every cultivator NPC is an independent LLM-powered agent that observes… | 78 | 2106 | active |
| python-control/python-control A Python library implementing basic operations for analysis and design of feedback control systems. It provides linear I/O system modeling,… | 63 | 2086 | stable |
| Rand Rand is a set of Rust crates providing random number generation, including a standard RNG trait, fast pseudo-random and cryptographically-s… | 96 | 2085 | stable |
| Carpet Mod Fabric Carpet is a Minecraft mod for the Fabric mod loader that gives technical players and server operators fine-grained control over vani… | 100 | 2082 | active |
| DeePMD-kit DeePMD-kit is a deep learning package for building many-body potential energy representations and running molecular dynamics simulations. I… | 92 | 2055 | stable |
| ezEngine/ezEngine ezEngine is a free, open source C++ game engine with a modular, plugin-based architecture and a feature-rich editor. It provides a full ECS… | 88 | 2032 | active |
| MoveIt Motion Planning Framework MoveIt is an open-source motion planning framework for ROS and ROS 2 that provides manipulation, inverse kinematics, collision checking, an… | 75 | 2024 | stable |
| OpenMM OpenMM is a high-performance toolkit and library for molecular dynamics simulation, with optimized GPU-accelerated kernels. It can be used … | 94 | 2000 | stable |
| djhworld/simple-computer A Go-based simulator of the 16-bit CPU described in 'But How Do It Know?' by J. Clark Scott, built from NAND gates up through registers, RA… | 66 | 1998 | active |