Browse free open source Simulation software and projects below. Use the toggles on the left to filter open source Simulation software by OS, license, language, programming language, and project status.

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  • 1
    FlightGear - Flight Simulator

    FlightGear - Flight Simulator

    FlightGear Flight Simulator: free open-source multiplatform flight sim

    Founded in 1997, FlightGear is developed by a worldwide group of volunteers, brought together by a shared ambition to create the most realistic flight simulator possible that is free to use, modify and distribute. FlightGear is used all over the world by desktop flight simulator enthusiasts, for research in universities and for interactive exhibits in museums. FlightGear features more than 400 aircraft, a worldwide scenery database, a multi-player environment, detailed sky modelling, a flexible and open aircraft modelling system, varied networking options, multiple display support, a powerful scripting language and an open architecture. Best of all, being open-source, the simulator is owned by the community and everyone is encouraged to contribute.
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    Downloads: 4,498 This Week
    Last Update:
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  • 2
    Virtual Controller

    Virtual Controller

    Program to control vJoy / vXbox Device via keyboard, mouse, joystick.

    Description Program to control Virtual Input Devices via physic Input Devices. Supported Virtual Input Devices: vJoy (Virtual Generic Joystick) vXbox (Virtual Xbox 360 Gamepad) vKeyboard (Simulated Keyboard) vMouse (Simulated Mouse) Supported Physic Input Devices: Keyboard Mouse Joystick System Requirements Operating system: Windows XP, Windows 7, Windows 8, Windows 10 Additional software: NET Framework 4 Notes: For Windows 7, for the virtual Xbox 360 Gamepad to work correctly, you need to install the following components: Microsoft Xbox 360 Accessories, Microsoft Security Advisory 3033929
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    Downloads: 1,432 This Week
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  • 3
    Rigs of Rods

    Rigs of Rods

    A 3D simulator game where you can drive, fly, and sail

    Rigs of Rods is a 3D simulator game where you can drive, fly and sail various vehicles using an accurate and unique soft-body physics engine. Since 2014, the development continued at https://github.com/RigsOfRods/rigs-of-rods UPDATE: 10/30/2016: removed opencandy installers, replaced with zip files.
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    Downloads: 172 This Week
    Last Update:
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  • 4
    AirSim

    AirSim

    A simulator for drones, cars and more, built on Unreal Engine

    AirSim is an open-source, cross platform simulator for drones, cars and more vehicles, built on Unreal Engine with an experimental Unity release in the works. It supports software-in-the-loop simulation with popular flight controllers such as PX4 & ArduPilot and hardware-in-loop with PX4 for physically and visually realistic simulations. It is developed as an Unreal plugin that can simply be dropped into any Unreal environment. AirSim's development is oriented towards the goal of creating a platform for AI research to experiment with deep learning, computer vision and reinforcement learning algorithms for autonomous vehicles. For this purpose, AirSim also exposes APIs to retrieve data and control vehicles in a platform independent way. AirSim is fully enabled for multiple vehicles. This capability allows you to create multiple vehicles easily and use APIs to control them.
    Downloads: 34 This Week
    Last Update:
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  • eProcurement Software Icon
    eProcurement Software

    Enterprises and companies seeking a solution to manage all their procurement operations and processes

    eBuyerAssist by Eyvo is a cloud-based procurement solution designed for businesses of all sizes and industries. Fully modular and scalable, it streamlines the entire procurement lifecycle—from requisition to fulfillment. The platform includes powerful tools for strategic sourcing, supplier management, warehouse operations, and contract oversight. Additional modules cover purchase orders, approval workflows, inventory and asset management, customer orders, budget control, cost accounting, invoice matching, vendor credit checks, and risk analysis. eBuyerAssist centralizes all procurement functions into a single, easy-to-use system—improving visibility, control, and efficiency across your organization. Whether you're aiming to reduce costs, enhance compliance, or align procurement with broader business goals, eBuyerAssist helps you get there faster, smarter, and with measurable results.
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  • 5
    OpenRocket
    An Open Source model rocket simulator.
    Downloads: 41 This Week
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  • 6
    GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.
    Downloads: 24 This Week
    Last Update:
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  • 7
    FlyByWire Simulations A32NX

    FlyByWire Simulations A32NX

    The A32NX & A380X Project are community driven open source projects

    A community-built and maintained project aiming to provide high-quality and detailed aircraft for Microsoft Flight Simulator. Our custom-built, open-source installer is where we keep our projects for you to easily install. Pick which branch you want to install, and the installer will automatically download it into the proper folder.
    Downloads: 3 This Week
    Last Update:
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  • 8
    Project Apollo - NASSP
    Project Apollo - NASSP (also known as NASSP or NCPP) is an add-on for the Orbiter space flight simulator. Project Apollo simulates the Apollo missions to Earth orbit and the Moon and the planned post-Apollo missions that never flew.
    Downloads: 14 This Week
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  • 9
    KDIS

    KDIS

    DIS(IEEE 1278.1) Fully Implemented in C++

    A complete open source implementation of DIS (Distributed Interactive Simulation) in C++. 1278.1 and 1278.1a are fully implemented including enumerations. Includes several utility classes to help with developing your DIS app. DIS 7 work is ongoing.
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    Downloads: 3 This Week
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  • 10
    SKYSCRAPERSIM (2018 project ABANDONED)
    We do not know the reasons of being abandoned by Ryan in 2018. Fortunately, we have a record which can be traced back to 2017 after figuring out how to obtain in bazaar way COMPLETELY, I translate the revision to git , we might have a chance to ignite again. IF successful, we can do whatever we like. I DO NOT FULLY TRUST AN ENTITY EVEN THAT ENTITY IS OK. SO PLEASE FORK THIS ONE AS SOON AS POSSIBLE ONCE YOU SEE , THE MORE FORKING THE BETTER. IF This helps you, You might consider to help us to get one domain, also try running longer. It is said the consideration might be eye dropping twenty hundred bucks , If you like to, you may contact me for further detail.
    Downloads: 12 This Week
    Last Update:
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  • 11
    Randomly generates scientifically-plausible solar systems, simulates plate tectonics, calculates climate, randomly generates towns, city blocks, NPCs, treasure hoards, dungeons, and other RPG-related things.
    Downloads: 8 This Week
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  • 12

    Cambridge Rocketry Simulator

    Simulate high power rocket flights with splash down plots

    This software allows you perform six degree of freedom simulations of High Power Rocket (HPR) and model rocket flights. Parachute descent is also simulated. 3D flight trajectories are produced as well as detailed tabular flight data. Running in Monte Carlo mode allows generates multiple possible flight paths and splash down plots, indicating the probability of landing in an area. Peer-reviewed publication in the Journal of Open Research Software (JORS) http://doi.org/10.5334/jors.137 "Cambridge Rocketry Simulator – A Stochastic Six-Degrees-of-Freedom Rocket Flight Simulator"
    Downloads: 5 This Week
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  • 13
    Step is an interactive physical simulation program for education. StepCore is a physical simulation library on which Step is based. Please refer to http://edu.kde.org/step for more details.
    Downloads: 5 This Week
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  • 14
    skunks

    skunks

    3D driving simulation based on Open Dynamics Engine

    Sour*eforge.net has become inaccesible to me because of Cl*udflare. The latest version of skunks is on my site: https://matei.one/. 3D realistic driving (not racing) simulation with software rendering, based on Open Dynamics Engine (which is included in all *.tar.gz files so it doesn't have to be downloaded separately). 10 cars (all electric) and 16 tracks are available in version 5.1.0. Cars and tracks can be easily created and modified. Only SDL 1.2 or SDL 2 required besides standard C library. GNU/Linux and Wind0ws executables are available. If using GNU/Linux and SDL 2, it might be necessary to add -lpthread in the comp file, at line 2.
    Downloads: 1 This Week
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  • 15
    Dioscuri is an x86 computer hardware emulator written in Java. It is designed by the digital preservation community to make sure that documents and programs from the past can still be accessed in the future. Dioscuri is durable and component-based.
    Downloads: 2 This Week
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  • 16
    Free 3D Acropolis is a model 3D in hight resolution of the Acropolis of Athens shortly after its construction.
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    Downloads: 3 This Week
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  • 17
    This program allows user to test the roads to be constructed, on a three dimensional simulation environment.
    Downloads: 2 This Week
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  • 18
    Arcus is a Rubik's Cube Simulator written in Java featuring 3D display and cube manipulation. Besides conventional solving, getting from any pattern to any goal pattern is supported. Allows the user to bidirectionally walk through the cube's history.
    Downloads: 2 This Week
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  • 19
    RAS is a model airplane simulation program. Written in C++ using OpenGL, is working on MS Windows platform. Aerodynamics is based on crrcsim simulator.
    Downloads: 1 This Week
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  • 20
    Artist is a portable 2D graphics library. Main features are: drawing primitives, bitmap blitting, alpha blending, zoom and rotation, text rendering and image file loading. It uses hardware acceleration and provides a simple and elegent API.
    Downloads: 1 This Week
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  • 21
    Blackjack Analyst is a program allowing evaluation of blackjack playing strategies through simulation.
    Downloads: 1 This Week
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  • 22

    Blackjack Card Counting Simulation

    Blackjack (Black Jack) Card Counting Simulation: High-Low (Hi-Lo)

    This C# application is a simulation that attempts to test the feasibility of deploying the now famous High-Low card counting technique paired with Basic Strategy rules. Some human error factors can be adjusted and winnings are displayed.
    Downloads: 1 This Week
    Last Update:
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  • 23
    JSBSim Commander is a GUI front-end for the development of aircraft flight models for the JSBSim flight dynamics model (used by FlightGear, etc.).
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    Downloads: 1 This Week
    Last Update:
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  • 24
    NGS is a Network Game Simulator, designed for prototyping and simulating new network gaming architectures.
    Downloads: 1 This Week
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  • 25
    QASE is a Java-based API designed to provide all the functionality needed to create game agents in Quake 2. Powerful enough to facilitate high-end research, it is also suitable for undergrad courses geared towards classic AI and agent-based systems.
    Downloads: 1 This Week
    Last Update:
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