Best Open Source Windows Simulation Software 2026

Simulation Software for Windows

Simulation Windows Clear Filters

Browse free open source Simulation software and projects for Windows 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

Sweet Home 3D

An interior design application to draw house plans & arrange furniture

Download the full version at: https://www.sweethome3d.com/download.jsp?adid=sourceforge Sweet Home 3D is an interior design application that helps you to quickly draw the floor plan of your house, arrange furniture on it, and visit the results in 3D.

301 Reviews

Downloads: 24,577 This Week

Last Update: 2025-04-02
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2

gretl

A cross-platform statistical package for econometric analysis

gretl is a cross-platform software package for econometric analysis, written in the C programming language.

37 Reviews

Downloads: 14,625 This Week

Last Update: 16 hours ago
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3

Logisim

An educational tool for designing and simulating digital logic circuits, featuring a simple-to-learn interface, hierarchical circuits, wire bundles, and a large component library. As a Java application, it can run on many platforms.

73 Reviews

Downloads: 3,769 This Week

Last Update: 2013-04-29
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4

GNS3

An advanced network simulator to design and configure virtual networks

Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware.

60 Reviews

Downloads: 3,450 This Week

Last Update: 6 days ago
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5

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.

60 Reviews

Downloads: 4,329 This Week

Last Update: 6 hours ago
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6

OpenFOAM

The Open Source CFD Toolbox

OpenFOAM - The Open Source CFD Toolbox. OpenFOAM is a generic, programmable software tool for Computational Fluid Dynamics (CFD). For more information, see: - Main Website: https://openfoam.org - C++ Source Documentation: https://cpp.openfoam.org - Issue (Bug) Tracking: https://bugs.openfoam.org - User Guide: https://cfd.direct/openfoam/user-guide

3 Reviews

Downloads: 3,544 This Week

Last Update: 2026-06-24
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7

XFLR5

XFLR5 is an analysis tool for airfoils, wings and planes

xflr5 is a potential flow solver with built-in pre- and post- processing functionalities.

45 Reviews

Downloads: 1,195 This Week

Last Update: 5 days ago
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8

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

10 Reviews

Downloads: 1,406 This Week

Last Update: 2020-08-20
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9

CoolProp

A cross-platform, open-source, alternative to NIST REFPROP. Based on reference-accuracy equations of state and transport property correlations for refrigerants like Water, CO2, R134a, Nitrogen, Argon, Ammonia, Air, R404a, R410a, Propane and many others. A selection of secondary working fluid properties are also available. Can also make use of REFPROP when available. In addition, calculations for Humid Air Properties based on ASHRAE RP-1485 are provided. Wrappers are available for MATLAB, Octave, Python, C#, Fortran and many more.

5 Reviews

Downloads: 1,129 This Week

Last Update: 55 minutes ago
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Protect and share files over FTP/S, SFTP, HTTPS and SCP with the #1 rated Windows file transfer server.

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10

GMAT

General Mission Analysis Tool

The General Mission Analysis Tool (GMAT) is an open-source tool for space mission design and navigation. GMAT is developed by a team of NASA, private industry, and public and private contributors. The GMAT development team is pleased to announce the release of GMAT version R2026a. For a complete list of new features, compatibility changes, and bug fixes, see the R2026a Release Notes in the Users Guide.

15 Reviews

Downloads: 889 This Week

Last Update: 2026-04-03
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11

mp3splt

utility to split mp3, ogg vorbis and FLAC files without decoding

mp3splt is a free utility to split mp3, ogg vorbis and FLAC files without decoding, selecting begin/end time; if file is an album, you can get splitpoints automatically from internet or a local cue, cddb file. It also splits Mp3Wrap and AlbumWrap archives. Supports splitting and trimming by silence detection. For mp3 files, both ID3v1 and ID3v2 are supported using original tags or user defined tags.

27 Reviews

Downloads: 480 This Week

Last Update: 2020-09-14
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12

OpenDSS

EPRI Distribution System Simulator

The OpenDSS is an electric power Distribution System Simulator (DSS) for supporting distributed resource integration and grid modernization efforts. See Discussion Forum for latest news.

13 Reviews

Downloads: 398 This Week

Last Update: 2026-06-26
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13

DWSIM - Open Source Process Simulator

Simulate chemical processes using advanced thermodynamic models

DWSIM is an open source, CAPE-OPEN compliant chemical process simulator for Windows, Linux and macOS systems. Written in VB.NET and C#, DWSIM features a comprehensive set of unit operations, advanced thermodynamic models, support for reacting systems, petroleum characterization tools and a fully-featured graphical interface. DWSIM Pro is a commercial sibling of DWSIM built on top of open-source software. It offers extended features, comes with private support, and is accessible in the cloud. Visit simulate365.com for details.

Downloads: 1,726 This Week

Last Update: 2025-10-28
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14

cfMesh

A library for polyhedral mesh generation

cfMesh is an open-source library for volume mesh generation based on OpenFOAM. It implements various meshing workflows for volume mesh generation needed for CFD simulations with OpenFOAM. It is already a part of foam-extend, OpenFOAM for Windows, Caelus and OpenFOAM+ released by ESI. This repository is intended for contribution and collaborative development. If you have a new meshing algorithm or interested in contributing to cfMesh, do not hesitate to contact us. Please note that this code is not the same as CF-MESH+, which is a commercial product offered by Creative Fields Holding.

4 Reviews

Downloads: 413 This Week

Last Update: 6 days ago
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15

MCU 8051 IDE

Integrated Development Environment for some microcontrollers based on 8051(e.g. AT89S8253). Supported languages are Assembly and C. It has its own simulator, assembler, editor and many other tools. See the project web site for more details and the newest updates.

9 Reviews

Downloads: 351 This Week

Last Update: 2020-04-28
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16

Simulation of Urban MObility

SUMO is a microscopic, multi-modal traffic simulation.

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. The code and the issue tracker can be found at https://github.com/eclipse-sumo/sumo/ The documentation can be found at https://sumo.dlr.de/docs/

12 Reviews

Downloads: 213 This Week

Last Update: 2026-06-25
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17

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.

295 Reviews

Downloads: 182 This Week

Last Update: 2016-10-30
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18

CEDAR Logic Simulator

CEDAR LS is an interactive digital logic simulator to be used for teaching of logic design or testing simple digital designs. It features both low-level logic gates as well as high-level components, including registers and a Z80 microprocessor emulat

9 Reviews

Downloads: 205 This Week

Last Update: 2020-02-26
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19

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: 33 This Week

Last Update: 2023-09-07
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20

GNU 8085 Simulator

GNUSim8085 is a simulator and assembler for the Intel 8085 Microprocessor. For downloading latest release please head to the website - https://gnusim8085.github.io/ For source code - https://github.com/GNUSim8085/GNUSim8085

2 Reviews

Downloads: 252 This Week

Last Update: 2016-09-25
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21

GHDL

VHDL 2008/93/87 simulator

This directory contains the sources of GHDL, the open-source analyzer, compiler, simulator and (experimental) synthesizer for VHDL, a Hardware Description Language (HDL). GHDL is not an interpreter: it allows you to analyze and elaborate sources for generating machine code from your design. Native program execution is the only way for high-speed simulation. Full support for the 1987, 1993, 2002 versions of the IEEE 1076 VHDL standard, and partial for the 2008 and 2019 revisions. By using a code generator (LLVM, GCC or, x86_64/i386 only, a built-in one), it is much faster than any interpreted simulator. It can handle very large designs, such as leon3/grlib. GHDL runs on GNU/Linux, Windows and macOS; on x86, x86_64, armv6/armv7/aarch32, aarch64 and ppc64. You can freely download nightly assets, use OCI images (aka Docker/Podman containers), or try building it on your own machine.

Downloads: 23 This Week

Last Update: 2026-03-07
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22

Digital-Logic-Sim

A minimalistic digital logic simulator

Digital-Logic-Sim is an interactive simulation tool designed to help users understand digital logic circuits through a visual and hands-on environment. It allows users to build circuits using basic logic gates such as AND, OR, and NOT, and observe how signals propagate through the system in real time. The project emphasizes education, making it easier for beginners to grasp concepts like binary logic, combinational circuits, and signal flow. It provides a visual interface where components can be connected and tested dynamically, reinforcing learning through experimentation. The simulation engine handles signal updates and interactions efficiently, ensuring that circuit behavior is accurately represented. It is particularly useful for students and hobbyists interested in computer architecture and electronics. Overall, Digital Logic Sim serves as an accessible platform for exploring and understanding the fundamentals of digital systems.

Downloads: 22 This Week

Last Update: 2026-04-23
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23

Java Neural Network Framework Neuroph

Neuroph is lightweight Java Neural Network Framework which can be used to develop common neural network architectures. Small number of basic classes which correspond to basic NN concepts, and GUI editor makes it easy to learn and use.

17 Reviews

Downloads: 93 This Week

Last Update: 2020-05-31
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24

OS X Portable Applications

Portable OS X FOSS applications

OS X FOSS portable applications are packaged so you can carry around on any portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (or also on your internal hard disk), taking your preferences with you.

22 Reviews

Downloads: 92 This Week

Last Update: 2020-09-12
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25

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: 18 This Week

Last Update: 2025-12-01
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