1.jrouwe / JoltPhysics
A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West and Death Stranding 2.
+341 stars
from 11,769 · score 5.83
Trending repositories
Ranked by Attention Score: stars gained over the last 7 complete days
44 repositories by Attention Score · Oct 27, 2026 – Nov 2, 2026 (UTC)
2.fjaeckel / seriesoftubes
A free cartoon browser game about how the internet really works: lay fiber and subsea cables, peer at IXPs, bill on the 95th percentile and survive backhoes, sharks and route leaks on your way to Tier 1.
+92 stars
from 69 · score 4.53
3.tangency-labs / fieldcraft
One open-source modeler for structures, heat and fluids, built from scratch in pure Rust: parametric part in, verified results out. Automatic all-hex and tet meshing, our own nonlinear implicit and explicit FEA, heat transfer and lattice Boltzmann CFD — every result checked against theory. For engineers and AI agents alike. Free, forever.
+76 stars
from 194 · score 4.34
4.AirsupHQ / machine-skill
Describe any machine in one line. Claude builds a photoreal, physics based, interactive simulation of it in one HTML file, plus the film to post it. An open source Claude Code skill.
+74 stars
from 407 · score 4.32
5.mll-lab-nu / embodied-first-exam
The first exam for code agents in the physical world: frozen robot tasks from many benchmark suites, each answered with a program and verified in a separate sandbox. Runs on Harbor.
+51 stars
from 175 · score 3.95
6.future-agi / future-agi
Open-source, end-to-end platform for evaluating, observing, and improving LLM and AI agent applications. Tracing · Evals · Simulations · Datasets · Gateway · Guardrails. Self-hostable. Apache 2.0.
+37 stars
from 2,200 · score 3.64
7.OpenRCT2 / OpenRCT2
An open source re-implementation of RollerCoaster Tycoon 2 🎢
+32 stars
from 16,498 · score 3.50
8.PavelDoGreat / WebGL-Fluid-Simulation
Play with fluids in your browser (works even on mobile)
+25 stars
from 16,762 · score 3.26
9.bulletphysics / bullet3
Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
+24 stars
from 14,816 · score 3.22
10.projectchrono / chrono
High-performance C++ library for multiphysics and multibody dynamics simulations
+22 stars
from 3,112 · score 3.14
11.cyberbotics / webots
Webots Robot Simulator
+21 stars
from 4,722 · score 3.09
12.OpenTTD / OpenTTD
OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe
+19 stars
from 8,428 · score 3.00
13.Revolutionary-Games / Thrive
The main repository for the development of the evolution game Thrive.
+19 stars
from 3,789 · score 3.00
14.mesa / mesa
Mesa is an open-source Python library for agent-based modeling, ideal for simulating complex systems and exploring emergent behaviors.
+16 stars
from 3,917 · score 2.83
15.Schlaubischlump / LocationSimulator
MacOS application to spoof / fake / mock your iOS / iPadOS or iPhoneSimulator device location. WatchOS and TvOS are partially supported.
+16 stars
from 3,151 · score 2.83
16.synthetichealth / synthea
Synthetic Patient Population Simulator
+13 stars
from 3,416 · score 2.64
17.The-Powder-Toy / The-Powder-Toy
Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.
+10 stars
from 5,380 · score 2.40
18.openrocket / openrocket
Model-rocketry aerodynamics and trajectory simulation software
+10 stars
from 3,178 · score 2.40
19.lammps / lammps
Public development project of the LAMMPS MD software package
+9 stars
from 3,110 · score 2.30
20.quantumlib / Cirq
Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.
+8 stars
from 5,092 · score 2.20
21.eclipse-sumo / sumo
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.
+7 stars
from 4,246 · score 2.08
22.jslee02 / awesome-robotics-libraries
:sunglasses: A curated list of robotics libraries and software
+7 stars
from 3,093 · score 2.08
23.Unity-Technologies / Unity-Robotics-Hub
Central repository for tools, tutorials, resources, and documentation for robotics simulation in Unity.
+7 stars
from 2,599 · score 2.08
24.sofa-framework / sofa
Real-time multi-physics simulation with an emphasis on medical simulation.
+7 stars
from 1,288 · score 2.08
25.taojy123 / KeymouseGo
类似按键精灵的鼠标键盘录制和自动化操作 模拟点击和键入 | automate mouse clicks and keyboard input
+6 stars
from 10,639 · score 1.95
26.osrf / gazebo_models
Gazebo database of SDF models. This is a predecessor to https://app.gazebosim.org
+6 stars
from 1,329 · score 1.95
27.idaholab / moose
Multiphysics Object Oriented Simulation Environment: A robust, modern, extendable, finite element/finite volume framework that excels at creating complex multiphysics simulations.
+4 stars
from 2,395 · score 1.61
28.pioneerspacesim / pioneer
A game of lonely space adventure
+4 stars
from 1,925 · score 1.61
29.unknown-horizons / unknown-horizons
Unknown Horizons official code repository
+4 stars
from 1,555 · score 1.61
30.R74nCom / sandboxels
In-browser falling-sand simulation game with over 500 elements and thousands of reactions.
+3 stars
from 474 · score 1.39
31.MFlowCode / MFC
Exascale multiphase flow solver — 2025 Gordon Bell Prize Finalist | 200T grid points on 43K+ GPUs
+3 stars
from 435 · score 1.39
32.lmmentel / awesome-python-chemistry
A curated list of Python packages related to chemistry
+2 stars
from 1,449 · score 1.10
33.precice / precice
A coupling library and ecosystem for partitioned multi-physics and multi-scale simulations, including surface and volume coupling.
+2 stars
from 985 · score 1.10
34.usnistgov / fipy
FiPy is a Finite Volume PDE solver written in Python
+2 stars
from 643 · score 1.10
35.pgmpy / pgmpy
Python Toolkit for Causal and Probabilistic Reasoning
+1 stars
from 3,364 · score 0.69
36.jasonwebb / morphogenesis-resources
Resources on the topic of digital morphogenesis (creating form with code). Includes links to major articles, code repos, creative projects, books, software, and more.
+1 stars
from 2,298 · score 0.69
37.ucla-mobility / OpenCDA
A generalized framework for prototyping full-stack cooperative driving automation applications under CARLA+SUMO.
+1 stars
from 1,170 · score 0.69
38.uuvsimulator / uuv_simulatorArchived
Gazebo/ROS packages for underwater robotics simulation
+1 stars
from 888 · score 0.69
39.mithi / hexapod
Blazing fast hexapod robot simulator for the web.
+1 stars
from 798 · score 0.69
40.johnmcfarlane / cnl
A Compositional Numeric Library for C++
+1 stars
from 694 · score 0.69
41.TUDelft-CNS-ATM / bluesky
The open source air traffic simulator
+1 stars
from 574 · score 0.69
42.pathsim / pathsim
A Python native dynamical system simulation framework in the block diagram paradigm.
+1 stars
from 511 · score 0.69
43.pydy / pydy
Multibody dynamics tool kit.
+1 stars
from 416 · score 0.69
44.sebsjames / mathplot
C++ modules for plotting, graphing and data visualization
+1 stars
from 66 · score 0.69