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Repositories in this selection 34 · UTC 2026-11-03
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1—PPavelDoGreat / WebGL-Fluid-SimulationPlay with fluids in your browser (works even on mobile)JavaScriptMIT · PermissiveInsufficient rank history16,7941,921——2024-11-12
2—OOpenRCT2 / OpenRCT2An open source re-implementation of RollerCoaster Tycoon 2 🎢C++GPL-3.0 · Share derivative sourceInsufficient rank history16,5361,958——2026-11-02
3—Bbulletphysics / bullet3Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.C++NOASSERTION · Restricted / unknownInsufficient rank history14,8433,107——2026-10-09
4—Jjrouwe / JoltPhysicsA 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.C++MIT · PermissiveInsufficient rank history12,1711,002——2026-11-01
5—Ttaojy123 / KeymouseGoMouse and keyboard recording and automation operations similar to Key Wizard simulate clicks and typing | automate mouse clicks and keyboard inputPythonGPL-2.0 · Share derivative sourceInsufficient rank history10,6471,353——2026-06-07
6—Aange-yaghi / engine-simCombustion engine simulator that generates realistic audio.C++MIT · PermissiveInsufficient rank history9,628956——2024-06-17
7—OOpenTTD / OpenTTDOpenTTD is an open source simulation game based upon Transport Tycoon DeluxeC++NOASSERTION · Restricted / unknownInsufficient rank history8,4521,330——2026-11-03
8—Aa-b-street / abstreetTransportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transitRustApache-2.0 · PermissiveInsufficient rank history8,188383——2025-09-10
9—Ccitybound / cityboundA work-in-progress, open-source, multi-player city simulation game.RustAGPL-3.0 · Share derivative sourceInsufficient rank history8,175367——2023-01-07
10—Ppshenok / server-survivalTower defense game that teaches cloud architecture. Build infrastructure, survive traffic, learn scaling.JavaScriptMIT · PermissiveInsufficient rank history6,474714——2026-10-21
11—PPetoiCamp / OpenCat-Quadruped-RobotAn open source quadruped robot pet framework for developing Boston Dynamics-style four-legged robots that are perfect for STEM, coding & robotics education, IoT robotics applications, AI-enhanced robotics application services, research, and DIY robotics kit development.C++MIT · PermissiveInsufficient rank history5,533654——2026-09-08
12—TThe-Powder-Toy / The-Powder-ToyWritten 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.C++GPL-3.0 · Share derivative sourceInsufficient rank history5,391923——2026-10-31
13—PProjectPhysX / FluidX3DAuthor description: The fastest and most memory efficient lattice Boltzmann CFD software, running on all GPUs and CPUs via OpenCL. Free for non-commercial use.C++NOASSERTION · Restricted / unknownInsufficient rank history5,340478——2026-10-29
14—Ccyberbotics / webotsWebots Robot SimulatorC++Apache-2.0 · PermissiveInsufficient rank history4,7462,095——2026-11-03
15—Ssession-replay-tools / tcpcopyAn online request replication and TCP stream replay tool, ideal for real testing, performance testing, stability testing, stress testing, load testing, smoke testing, and more.CNOASSERTION · Restricted / unknownInsufficient rank history4,6871,022——2025-06-18
16—Sst-tech / ppf-contact-solverA contact solver for physics-based simulations involving 👚 shells, 🪵 solids, 🪢 rods, 🧱 rigid bodies and ⏳ sand.PythonApache-2.0 · PermissiveInsufficient rank history4,594346——2026-11-03
17—Eeclipse-sumo / sumoEclipse 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.PythonEPL-2.0 · Share derivative sourceInsufficient rank history4,2551,780——2026-11-03
18—Mmesa / mesaMesa is an open-source Python library for agent-based modeling, ideal for simulating complex systems and exploring emergent behaviors.PythonApache-2.0 · PermissiveInsufficient rank history3,9381,357——2026-11-02
19—NNVIDIA / skillsAgent 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.PythonApache-2.0 · PermissiveInsufficient rank history3,840482——2026-11-02
20—RRevolutionary-Games / ThriveThe main repository for the development of the evolution game Thrive.C#NOASSERTION · Restricted / unknownInsufficient rank history3,808637——2026-11-03
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