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 |
|---|---|---|---|
| farbrausch/fr_public An archive of Farbrausch's demoscene tools from 2001-2011, including the Werkkzeug visual content-creation tools, the V2 synthesizer, kkrun… | 32 | 3795 | maintenance |
| subprotocol/verlet-js A simple 2D Verlet integration physics engine written in JavaScript, supporting particles, distance constraints, and angular constraints. I… | 32 | 3791 | maintenance |
| SlugLab/CXLMemSim CXLMemSim is a simulation and emulation framework for CXL 3.0 memory systems, combining a latency/bandwidth/topology/coherency simulator wi… | 67 | 1099 | active |
| Strilanc/Quirk Quirk is a drag-and-drop quantum circuit simulator that runs entirely in the browser, letting users build small quantum circuits and see st… | 23 | 1099 | stable |
| RenderKit/ospray Intel OSPRay is an open-source, scalable, portable ray tracing engine for high-fidelity, high-performance visualization on CPUs and Intel G… | 65 | 1097 | active |
| LucasAlegre/sumo-rl SUMO-RL is a Python library that provides Gymnasium and PettingZoo-compatible reinforcement learning environments for traffic signal contro… | 51 | 1095 | active |
| CoolProp/CoolProp CoolProp is an open-source C++ library providing thermophysical property data for pure fluids, mixtures, incompressible fluids, and brines,… | 90 | 1094 | stable |
| shashwatak/satellite-js A TypeScript/JavaScript library implementing SGP4 and SDP4 orbital propagation from TLE and OMM data, usable in web and Node.js environment… | 89 | 1091 | active |
| CMaNGOS CMaNGOS Classic is an open-source C++ game server that emulates the World of Warcraft 1.12 (Classic) server experience for local, education… | 78 | 1091 | active |
| alessandro-zomparelli/tissue Tissue is a Blender add-on for computational design, providing tools for parametric mesh generation, tessellation, and reaction-diffusion s… | 79 | 1086 | active |
| Razaekel/noise-rs A Rust library for procedural noise generation, providing gradient noise functions like Perlin noise that can be chained and combined into … | 32 | 1086 | active |
| RocketPy-Team/RocketPy RocketPy is a Python library for high-fidelity 6-DOF trajectory simulation of high-power rockets, including variable mass effects, parachut… | 89 | 1083 | active |
| Sollimann/bonsai Bonsai is a Rust implementation of behavior trees for building deterministic AI logic, with Python bindings available on PyPI. It targets r… | 82 | 1083 | active |
| StereoKit/StereoKit StereoKit is an easy-to-use open source mixed reality engine/library for building AR and VR applications with C# (and a C API for native co… | 69 | 1081 | active |
| System Designer System Designer is a low-code development platform for designing systems using UML models stored in a JSON format called MSON. It lets you … | 53 | 1080 | active |
| abizovnuralem/go2_omniverse A Python library providing Unitree Go2 and G1 robot support for NVIDIA Isaac Lab / Isaac Sim, enabling simulation of these quadruped and hu… | 53 | 1080 | active |
| SUPER SUPER is a safety-assured high-speed navigation system for micro aerial vehicles (MAVs), published in Science Robotics by HKU MaRS Lab. It … | 29 | 1073 | active |
| WorldEngine WorldEngine is a Python-based procedural world generator that simulates plate tectonics, erosion, rain shadows, and Holdridge life zones to… | 67 | 1071 | active |
| ebruneton/precomputed_atmospheric_scattering A reference C++/OpenGL implementation of the Precomputed Atmospheric Scattering (EGSR 2008) paper, with extensive documentation, unit tests… | 49 | 1071 | stable |
| rafael-fuente/diffractsim A flexible Python library for simulating and visualizing diffraction and physical optics phenomena using scalar diffraction techniques like… | 62 | 1070 | active |
| viblo/pymunk Pymunk is a Pythonic 2D rigid body physics library built on top of Munk2D (a fork of Chipmunk2D). It provides easy-to-use physics simulatio… | 74 | 1069 | stable |
| buddhi1980/mandelbulber2 Mandelbulber v2 is a cross-platform desktop application for generating and rendering photorealistic three-dimensional fractals such as Mand… | 68 | 1069 | active |
| SHWotever/SimHub SimHub is a Windows application that extends racing and flight simulators with custom dashboards, overlays, haptic feedback (bass shakers, … | 92 | 1061 | active |
| KarypisLab/METIS METIS is a C library and set of serial programs for partitioning graphs and finite element meshes, and for computing fill-reducing ordering… | 67 | 1060 | stable |
| nholthaus/units A compile-time, header-only C++23 dimensional-analysis and unit-conversion library with no dependencies. It represents physical quantities … | 94 | 1058 | active |
| OpenSceneGraph OpenSceneGraph is an open-source high-performance 3D graphics toolkit written in Standard C++ and OpenGL, providing a robust scene graph te… | 32 | 3613 | maintenance |
| GDSFactory GDSFactory is a Python library for programmatically designing chips (photonics, analog, quantum, MEMS), PCBs, and 3D-printable objects. Use… | 94 | 1056 | active |
| LuisaGroup/LuisaCompute LuisaCompute is a high-performance cross-platform computing framework for graphics and beyond, featuring a C++-embedded DSL for GPU kernel … | 77 | 1055 | active |
| linorobot/linorobot2 linorobot2 is a ROS 2 package that provides a complete, working foundation for building autonomous mobile robots with 2WD, 4WD, and Mecanum… | 76 | 1054 | active |
| NVIDIA PhysX SDK NVIDIA PhysX SDK 4.1, a scalable multi-platform real-time physics engine for rigid body dynamics and collision detection, used in game engi… | 23 | 3599 | maintenance |
| movsim/traffic-simulation-de An interactive JavaScript/HTML5 traffic flow microsimulation web application, the source code behind traffic-simulation.de. It simulates sc… | 75 | 1052 | active |
| skyfloogle/red-viper Red Viper is a Nintendo Virtual Boy emulator for the Nintendo 3DS, continuing the work on r3Ddragon. It uses a dynamic recompiler and hardw… | 94 | 1047 | active |
| Dimsmary/OpenSTM OpenSTM is an open-source DIY scanning tunneling microscope (STM) project capable of atomic-scale imaging, demonstrated by resolving carbon… | 29 | 1043 | active |
| QNLab-USTC/SimQN SimQN is a discrete-event network-layer simulator for quantum networks, written in Python with optional Cython acceleration. It supports la… | 77 | 1040 | active |
| smparsons/retroboy Retro Boy is a cycle-accurate Game Boy emulator written in Rust that compiles to WebAssembly for browser-based play. It features accurate C… | 56 | 1039 | active |
| whoenig/libMultiRobotPlanning A C++14 header-style library providing highly templated search algorithms for multi-robot/agent task and path planning. It implements singl… | 32 | 1039 | stable |
| D2I-CUHKSZ/MicroWorld MicroWorld is a lightweight Python engine that turns multi-modal event materials (documents, images, videos, graph signals) into structured… | 50 | 1038 | active |
| vpinball/vpinball Visual Pinball is an open-source pinball table editor and physics simulator written in C++. It lets users build, edit, and play virtual pin… | 79 | 1037 | active |
| Phylliade/ikpy IKPy is a pure-Python inverse kinematics library that computes IK for arbitrary kinematic chains defined via URDF, MJCF, DH parameters, or … | 90 | 1034 | active |
| motional/nuplan-devkit The official devkit for the nuPlan dataset, providing tools to load, visualize, and process the large-scale autonomous driving planning dat… | 37 | 1034 | active |
| gtkwave/gtkwave GTKWave is a GTK-based waveform viewer for Unix, Windows, and macOS that reads FST, LXT, LXT2, VZT, GHW, and Verilog VCD/EVCD dump files. I… | 67 | 1033 | active |
| BRL-CAD/brlcad BRL-CAD is a cross-platform open source combinatorial solid modeling system with an interactive 3D geometry editor, a high-performance netw… | 85 | 1031 | active |
| 6-robot/wpr_simulation A Gazebo simulation package for the WPR series of wheeled mobile robots, designed for ROS Noetic on Ubuntu 20.04. It provides demo scenario… | 32 | 1031 | active |
| Particle Life An interactive desktop application that simulates Particle Life, a simple particle system that exhibits complex life-like emergent behavior… | 56 | 1028 | active |
| OpenFFBoard Open FFBoard is open-source firmware for a universal force feedback interface and motor driver, designed for DIY simulation devices like di… | 89 | 1026 | active |
| DREAM-DK/MAKRO MAKRO is a large-scale macroeconomic model of the Danish economy developed by DREAM for the Danish Ministry of Finance, written in GAMS wit… | 67 | 1025 | active |
| cityflow-project/CityFlow CityFlow is an open-source microscopic traffic simulator designed as a multi-agent reinforcement learning environment for large-scale city … | 45 | 1025 | active |
| CloudSim CloudSim is a Java-based framework for modeling and simulating cloud computing infrastructures and services, including data centers, virtua… | 49 | 1022 | active |
| NVIDIA-RTX/RTXPT NVIDIA's real-time path tracing library and sample application, a pure path tracer built on the Donut framework with DirectX 12 and Vulkan … | 63 | 1020 | active |
| FullControlXYZ/fullcontrol FullControl is a Python library for explicitly designing 3D printer toolpaths and converting them into gcode, bypassing the conventional CA… | 66 | 1019 | active |
| appsinacup/godot-rapier-physics A 2D and 3D physics engine plugin for the Godot game engine, built on the Rapier physics library and Salva fluids simulation. It serves as … | 93 | 1017 | active |
| Pjbomb2/TrueTrace-Unity-Pathtracer A high-performance compute shader based path tracer for Unity3D that works without RT cores, using compressed wide BVH for software ray tra… | 75 | 1016 | active |
| tomohiron907/Strecs3D Strecs3D is a desktop preprocessor that optimizes 3D printing infill using built-in FEM stress analysis, assigning dense infill to high-str… | 54 | 1015 | active |
| LeCAR-Lab/dial-mpc DIAL-MPC is a sampling-based model predictive control framework for full-order, torque-level locomotion control of legged robots, using dif… | 20 | 1011 | active |
| davidrmiller/biosim4 A C++ command-line program that simulates biological creatures evolving through natural selection in a 2D arena, as featured in the YouTube… | 68 | 3366 | maintenance |
| Torque 3D Torque 3D is an MIT-licensed open source C++ game engine from GarageGames, originally used for titles ranging from driving simulators to MM… | 23 | 3366 | maintenance |
| mit-biomimetics/Cheetah-Software MIT Biomimetics' software for the Cheetah 3 and Mini Cheetah quadruped robots, containing a dynamics/common library, robot control programs… | 32 | 3307 | maintenance |
| google/brax Brax is a fast, fully differentiable rigidbody physics engine written in JAX, designed for massively parallel simulation on accelerator har… | 84 | 3247 | maintenance |
| phy Oimo.js is a lightweight 3D physics engine written in pure JavaScript, a full conversion of the ActionScript OimoPhysics library. It provid… | 32 | 3178 | maintenance |
| leggedrobotics/legged_gym A Python library providing Isaac Gym environments for training legged robots (e.g., ANYmal) to walk on rough terrain with reinforcement lea… | 39 | 3150 | maintenance |
| Unity-Technologies/NavMeshComponents Unity components (NavMeshSurface, NavMeshModifier, NavMeshModifierVolume, NavMeshLink) providing a high-level API for building and using Na… | 23 | 3087 | maintenance |
| isaac-sim/IsaacGymEnvs A collection of example reinforcement learning environments for NVIDIA Isaac Gym, a GPU-accelerated physics simulator. It provides a Gym-st… | 10 | 2952 | maintenance |
| zhm-real/MotionPlanning A Python collection of motion planning and path tracking algorithms for autonomous vehicles, including Hybrid A*, Frenet Optimal Trajectory… | 32 | 2751 | maintenance |
| schteppe/p2.js p2.js is a 2D rigid body physics engine written in JavaScript, providing collision detection, friction, restitution, springs, motors, and c… | 23 | 2688 | maintenance |
| Humpheh/goboy GoBoy is a multi-platform Nintendo Game Boy and Game Boy Color emulator written in Go, with colour and sound support. It was built primaril… | 67 | 2636 | maintenance |
| amethyst/specs Specs is an Entity-Component System (ECS) library for Rust with easy parallelism, flexible component storages, and system dependency/barrie… | 23 | 2616 | maintenance |
| yuanming-hu/taichi_mpm A high-performance C++ implementation of the Moving Least Squares Material Point Method (MLS-MPM) with cutting and two-way rigid body coupl… | 23 | 2590 | maintenance |
| godot-jolt/godot-jolt Godot Jolt is a native GDExtension for the Godot game engine that integrates the Jolt physics engine as a drop-in replacement for Godot Phy… | 60 | 2576 | maintenance |
| HackerPoet/MarbleMarcher Marble Marcher is a video game demo built on a fractal physics engine with fully procedural rendering, where players roll a marble across r… | 32 | 2554 | maintenance |
| NVIDIAGameWorks/PhysX-3.4 NVIDIA PhysX SDK 3.4, a real-time physics simulation engine for games and other applications, including rigid body dynamics, collision dete… | 23 | 2418 | maintenance |
| alecthomas/entityx EntityX is a fast, type-safe Entity Component System (ECS) library for C++11 that decouples entity logic and data from entity objects. It p… | 36 | 2346 | maintenance |
| Godot Heightmap Terrain A heightmap-based terrain plugin for the Godot game engine, implemented entirely in GDScript. It provides terrain sculpting, texture painti… | 71 | 2276 | maintenance |
| EzySlice EzySlice is an open-source mesh slicing framework for the Unity3D game engine, written entirely in C#. It slices convex meshes using a plan… | 23 | 2276 | maintenance |
| MineDojo MineDojo is an AI research framework built on Minecraft for training open-ended, generally capable embodied agents. It provides a simulatio… | 23 | 2260 | maintenance |
| Openarl/PathOfBuilding An offline build planner for the game Path of Exile, written in Lua. It calculates character offense/defense stats, plans passive skill tre… | 23 | 2107 | maintenance |
| doyubkim/fluid-engine-dev Jet is a C++11 fluid simulation engine SDK for computer graphics, created alongside the book 'Fluid Engine Development'. It provides SPH, P… | 23 | 2102 | maintenance |
| generalized-intelligence/GAAS GAAS (Generalized Autonomy Aviation System) is an open-source C++ framework for fully autonomous VTOL aircraft and drones, built around lid… | 23 | 2094 | maintenance |
| FUE5BASE/FUE5 FUE5 is a fan-made Unreal Engine 5 project that recreates Factorio bases in 3D, letting players import their in-game factories via a compan… | 30 | 1925 | maintenance |
| ANYbotics/elevation_mapping A ROS package for robot-centric elevation mapping of rough terrain, built for mobile and legged robots equipped with pose estimation and di… | 32 | 1878 | maintenance |
| tunabrain/tungsten Tungsten is a high-performance physically based renderer written in C++11 that simulates full light transport through arbitrary geometry us… | 23 | 1834 | maintenance |
| LingBot-World LingBot-World is an open-source world model that generates high-fidelity, interactive simulated environments from video generation, support… | 56 | 1823 | maintenance |
| ncase/loopy LOOPY is a browser-based tool for modeling and simulating systems by drawing circles and arrows (causal loop diagrams). It lets users play … | 32 | 1746 | maintenance |
| google-research/torchsde A PyTorch library providing differentiable stochastic differential equation (SDE) solvers with GPU support and efficient backpropagation vi… | 10 | 1727 | maintenance |
| DeepMotionEditing/deep-motion-editing A PyTorch-based end-to-end library for editing and rendering 3D character motion, built on SIGGRAPH 2020 research. It provides deep learnin… | 32 | 1726 | maintenance |
| 101dotxyz/GPTeam GPTeam is an open-source multi-agent simulation that uses GPT-4 to create multiple AI agents with memory who collaborate and communicate to… | 74 | 1724 | maintenance |
| ethz-adrl/control-toolbox The Control Toolbox (CT) is an open-source C++ library for modelling dynamical systems, control, estimation, trajectory optimization and mo… | 23 | 1714 | maintenance |
| ethz-asl/voxblox Voxblox is a C++ volumetric mapping library for building Truncated Signed Distance Field (TSDF) and Euclidean Signed Distance Field (ESDF) … | 32 | 1673 | maintenance |
| KikiLetGo/VirusBroadcast A Java-based simulation program that models virus broadcast/epidemic spread among a population. It was built quickly during the early COVID… | 32 | 1667 | maintenance |
| citybound/citybound Citybound is an open-source, multi-player city building simulation game written in Rust, focused on realism and microscopic simulation of i… | 32 | 8171 | experimental |
| dimforge/nphysics nphysics is a 2D and 3D rigid body physics engine for games and animations written in Rust, using ncollide for collision detection and nalg… | 32 | 1649 | maintenance |
| itsfrank/MinecraftHDL MinecraftHDL is a Verilog synthesis flow that compiles digital logic designs written in Verilog into Minecraft redstone circuits. It uses i… | 23 | 1595 | maintenance |
| GDQuest/godot-steering-ai-framework A GDScript framework for the Godot game engine implementing steering behaviors (seek, flee, path following, group behaviors, etc.) for smoo… | 23 | 1579 | maintenance |
| petercorke/robotics-toolbox-matlab A MATLAB toolbox providing robotics functionality including kinematics and dynamics of serial-link manipulators, mobile robot motion models… | 23 | 1561 | maintenance |
| mikebryant/ac-nh-turnip-prices Turnip Prophet is a single-page web app that predicts Animal Crossing: New Horizons turnip prices for the week based on user-entered price … | 32 | 1554 | maintenance |
| Unknown Horizons Unknown Horizons is an open-source 2D isometric real-time strategy simulation game focused on economy and city building, written in Python.… | 66 | 1552 | maintenance |
| mattatz/unity-voxel A Unity library that converts triangle meshes into voxel representations using both GPU (compute shader) and CPU voxelizers. It supports bu… | 32 | 1527 | maintenance |
| SebLague/Slime-Simulation A Unity-based implementation of the Physarum (slime mold) agent-based simulation, created by Seb Lague as a companion to a YouTube video. I… | 32 | 1515 | maintenance |
| marsauto/europilot Europilot is a Python toolkit that bridges Euro Truck Simulator 2 with deep-learning frameworks, enabling end-to-end self-driving research … | 32 | 1513 | maintenance |
| ethz-asl/rotors_simulator RotorS is a Gazebo-based simulator for micro aerial vehicles (MAVs/UAVs) built on ROS, providing multirotor models like the AscTec Hummingb… | 32 | 1508 | maintenance |
| AIRLegend/aitrack AITrack is a free 6DoF head tracking application that uses a webcam and neural networks to estimate head position and rotation. It streams … | 23 | 1496 | maintenance |