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

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  • 1
    GMAT

    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 R2025a. For a complete list of new features, compatibility changes, and bug fixes, see the R2025a Release Notes in the Users Guide.
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    Downloads: 739 This Week
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  • 2
    IT++ is a C++ library of mathematical, signal processing and communication classes and functions. Its main use is in simulation of communication systems and for performing research in the area of communications.
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    Downloads: 117 This Week
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  • 3
    Netgen Mesh Generator

    Netgen Mesh Generator

    NETGEN is an automatic 3d tetrahedral mesh generator

    NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format. The connection to a geometry kernel allows the handling of IGES and STEP files. NETGEN contains modules for mesh optimization and hierarchical mesh refinement. Netgen is open source based on the LGPL license. It is available for Unix/Linux and Windows.
    Downloads: 58 This Week
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  • 4
    Minsky

    Minsky

    System dynamics program with additional features for economics

    Minsky brings system dynamics and monetary modelling to economics. Models are defined using flowcharts on a drawing canvas (as are Matlab's Simulink, Vensim, Stella, etc). Minsky's unique feature is the "Godley Table", which uses double entry bookkeeping to generate stock-flow consistent models of financial flows. Minsky is good for demonstrating mathematics too, with the most "math-like" interface in system dynamics. Sign up to Minsky's Patreon page (for as little as $1 a month) at https://www.patreon.com/Ravelation/. This creates a user community, which SourceForge doesn't facilitate.
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    Downloads: 62 This Week
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  • 5
    XonGrid

    XonGrid

    Excel interpolation add-in

    XonGrid is a free Excel library of functions to perform 1D, 2D, 3D, 4D and arbitrary dimension (ND) interpolations from scattered data.
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    Downloads: 39 This Week
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  • 6
    ASCEND modelling environment
    ASCEND is a modelling environment and solver for large or small systems of non-linear equations, for use in engineering, thermodynamics, chemistry, physics, mathematics and biology. Solvers for both steady and dynamic (NLA & DAE) problems, are provid
    Downloads: 14 This Week
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  • 7
    CasADi
    A symbolic framework for C++, Python and Octave implementing automatic differentiation by source code transformation in forward and reverse modes on sparse matrix-valued computational graphs.
    Downloads: 10 This Week
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  • 8
    water_hammer_simulation

    water_hammer_simulation

    A Qt application for water hammer simulation.

    With differents numerical methods this application simulate the water hammer phenomenon.
    Downloads: 13 This Week
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  • 9
    surfit is an open source and free gridding and contouring software. surfit can do interpolation/approximation of points, contours and surfaces, can take fault lines and trend surfaces into account, can use inequalities and other conditions. Supports a lo
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    Downloads: 7 This Week
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  • 10
    OpenFVM is a general open source three-dimensional Computational Fluid Dynamics (CFD) solver (for Linux and Windows). It uses the unstructured finite volume method to simulate non-isothermal transient flow. Gmsh is used for pre- and post- processing.
    Downloads: 3 This Week
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  • 11

    Neural Network

    Neural Network with Hypercube Neurons.

    Downloads: 3 This Week
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  • 12
    XMDS

    XMDS

    Fast integrator of stochastic partial differential equations

    XMDS is a code generator that integrates equations. You write them down in human readable form in a XML file, and it goes away and writes and compiles a C++ program that integrates those equations as fast as it can possibly be done in your architecture.
    Downloads: 3 This Week
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  • 13
    CCruncher

    CCruncher

    Open-Source Project for Credit Risk Modeling

    CCruncher is a project for quantifying portfolio credit risk using the copula approach. It is a framework consisting of two elements: a technical document that explains the theory, and a software program that implements it. CCruncher evaluates the portfolio credit risk by sampling the portfolio loss distribution and computing the Expected Loss (EL), Value at Risk (VaR) and Expected Shortfall (ES) statistics. The portfolio losses are obtained simulating the default times of obligors and simulating the EADs and LGDs of their assets.
    Downloads: 1 This Week
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  • 14
    Experimental Lindenmayer System generator, in 3D using OpenGL. Used for modeling the fractal growth processes of plants.
    Downloads: 1 This Week
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  • 15
    A topological data structure to handle 2D, surfaces and 3D simplicial meshes. This data structure is implemented in C++ using templates. It is based on Corner-Table and CGAL data structure.
    Downloads: 1 This Week
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  • 16
    OpenDiscreteDynamicProgrammingTemplate : founds optimal constrainted parameters of a discrete controls with second order optimization template replacing Hessian with directional derivatives and backpropagation for digital filter(as neural network)
    Downloads: 1 This Week
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  • 17
    ViennaGrid is a generic mesh handling library that provides the traversal of structured and unstructured grids in arbitrary spatial dimensions, in particular 1d, 2d and 3d. Quantities can be conveniently stored on mesh elements using ViennaData.
    Downloads: 1 This Week
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  • 18

    AirTSP

    Simulated Airline Travel Solution Provider Library

    AirTSP is also named AirTSP (TSP standing for Travel Service Provider). That project aims at providing a clean API and a simple implementation, as a C++ library, of an Airline Schedule Management System. It is intended to be used in simulated environments only: it is not designed to work in the real-world of Airline IT operations. AirTSP/AirTSP makes an extensive use of existing open-source libraries for increased functionality, speed and accuracy. In particular the Boost (C++ Standard Extensions: http://www.boost.org) library is used. AirTSP/AirTSP is the one of the components of the Travel Market Simulator (http://www.travel-market-simulator). However, it may be used in a stand-alone mode.
    Downloads: 0 This Week
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  • 19
    NOTE: This project was moved to: https://github.com/eetorres The BPANNA is a flexible Back propagation neural network, which include the Conjugate Gradient and the Levenberg-Marquardt. You can change the number of inputs, number of layers, number of neurons per layer and outputs. It included an structure editor.
    Downloads: 0 This Week
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  • 20
    BioFVM

    BioFVM

    3-D diffusion solver for biological problems

    BioFVM is an open source diffusive transport solver for biological problems. It can solve for the diffusion of tens or hundreds of substrates on large 3-D domains. For simplicity, the code has minimal external dependencies. BioFVM was first published in: A. Ghaffarizadeh, S.H. Friedman, and P. Macklin. BioFVM: an efficient, parallelized diffusive transport solver for 3-D biological simulations. Bioinformatics 32(8): 1156-8, 2016. DOI: 10.1093/bioinformatics/btv730 method paper: http://dx.doi.org/10.1093/bioinformatics/btv730
    Downloads: 0 This Week
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  • 21
    A collection of different methods for implementing in C++ polycrystalline growth for metals during annealing or recrystallization.
    Downloads: 0 This Week
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  • 22
    C++ Airline Inventory Management Library
    That project aims at providing a clean API and a simple implementation, as a C++ library, of an Airline-related Inventory Management system. That library uses the Standard Airline IT C++ object model (http://sf.net/projects/stdair).
    Downloads: 0 This Week
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  • 23
    C++ Airline Travel Market Simulator
    That project aims at studying and comparing typical airline IT methods, for instance RM-related algorithms. It works from a Unix/Linux/Mac command-line, and exposes basic APIs. It is being developed in C++, with Python wrappers for some components.
    Downloads: 0 This Week
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  • 24
    C++ Multivariate Distributions Library

    C++ Multivariate Distributions Library

    A Multivariate Distributions Package for C++

    A library based on Eigen and Boost to handle common multivariate distributions in C++
    Downloads: 0 This Week
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  • 25
    C++ Simulated Fare Quote System Library
    That project aims at providing a clean API and a simple implementation, as a C++ library, of a Travel-oriented fare engine. It corresponds to the simulated version of the real-world Fare Quote System.
    Downloads: 0 This Week
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