Open Source Simulation Software

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.

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.

GridLAB-D is a new power system simulation tool that provides valuable information to users who design and operate electric power transmission and distribution systems, and to utilities that wish to take advantage of the latest smart grid technology. It incorporates advanced modeling techniques with high-performance algorithms to deliver the latest in end-use load modeling technology integrated with three-phase unbalanced power flow, and retail market systems. Historically, the inability to effectively model and evaluate smart grid technologies has been a barrier to adoption; GridLAB-D is designed to address this problem. User documentation can be found at: http://gridlab-d.shoutwiki.com/wiki/Quick_links The source code is available from GitHub. See https://github.com/gridlab-d/gridlab-d. Issue tracking is handled by GitHub. See https://github.com/gridlab-d/gridlab-d/issues.

A package for transient and steady state simulation of organic solar cells.

This project simulates the behavior, dynamics, and motion of a group of celestial objects. Given N point masses in a three-dimensional space, its present positions and velocities, and supposing that the force of attraction experienced between each pair of particles is Newtonian, the project approximately predicts it's positions and velocities at a future moment of time. The project can visualize the simulation, and create a graphic real-time output using FreeGLUT, and also have an option for textual output and archiving. Bugale N-Body Data Editor provides a graphic user interface for creating and editing the settings and body data files of Bugale N-Body Simulator. It can be found here: https://sourceforge.net/projects/bugaledataedit

A Suite of Programs implementing a fast approach to the Debye Function Analysis (DFA) of powder diffraction data from nanocrystalline and/or non-ordered materials. See J. Appl. Cryst. 2015, 48, 2026-2032

An application programming (API) and graphical user interface (GUI) to facilitate the use of PENELOPE's program PENEPMA.

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"

QVM is a quaternion, vector, and matrix class set in C++ for 3D kinematics.

Library for ion optics, plasma extraction and space charge dominated ion beam transport.

!!! This project is currently CLOSED. There is a new version of API available under LGPL license at https://github.com/gehtsoft-usa/BallisticCalculator1 There is a new version of application in progress (ported to net framework 5.0) https://github.com/nikolaygekht/ballistic.calculator.app Ballisitic Calculator based on JBM's implementation 3-degree of freedom model, ported to C#, improved to support metric system and extended by some math from Litz's "Applied Ballistic" book. Calculator displays ballistic tables, graphs, comparison graph and reticle images. The application is free to use under GNU license

Wavefront is a programme for simulating 2D acoustic systems, with a particular emphasis on determining wavefront shapes at the mouths of horns. It accepts CAD drawings in DXF format and produces animated displays of wave propagation as well as exporting various data as text files. It is GPL software and runns on Linux and Windows.

PDSTRIP is a hydrodynamic strip code for seakeeping. It computes ship motions for monohulls including sailing boats. PDSTRIP has been abandoned by its initiators, who do not wish to be contacted with use questions. The position of maintainer is vacant.

Knitter produces a 3-dimensional model of a knitting pattern. It supports KnitML, as well as a native language similar to that of traditional knitting patterns.

Software for simulating the flight path of high power rockets in six-degree-of-freedom. This software runs with Octave or Matlab and can simulate a wide range of scenarios including parachute recovery and multiple stage flights.

TCAD Device Simulator. DEVSIM is a semiconductor device simulation software, using the finite volume method. This software solves partial differential equations on a mesh. The Python interface allows the user to specify their own equations.

GGOS is a Graphical Simulator of the gravity interaction written in C. It provides a real-time tracking of the orbit and the user can interact with the universe with a lot of function. There is 2 different version:1(fast)with X11 2(slow)written with GLUT

Insensitive (Incredible Nuclear Spin EvolutioN SImulation Tool Intended for Visual Education) is an application to simulate the NMR experiment based on the quantum mechanical density matrix formalism. It is available for Mac OS X 10.6 and above and iOS 5.1.1 and above. Please refer to the paper published in Concepts In Magnetic Resonance, 2011, 38A (2), 17-24.

SIMulation to EXPeriment is software that allows the direct comparison of simulation density information with that obtained from X-ray and neutron scattering experiments, by converting the simulation data to form factors. It also calculates volume probability distributions according to a space filling volumetric model. Written in C++ and Qt, SIMtoEXP has a very simple and easy to use GUI with interactive plotting. The software was originally developed by Norbert Kucerka. The code has been tested on OpenSUSE and Ubuntu (both binary and compilation); Windows and Mac are not officially supported, see the 'Notes' in the tar. PLEASE READ THE WIKI FOR THE MOST UP-TO-DATE INFORMATION - there have been major bug fixes recently.

A 2-D inviscid flow and adjoint solver on unstructured triangular grids. It makes use of a vertex-centroid finite volume scheme which is second order accurate. The adjoint solver is developed using the automatic differentiation tool called TAPENADE. Code has been moved to https://github.com/cpraveen/euler2d

CFD scientific software. Provides simulation of 3D CFD problem based on Quasi-Gas Dynamics approach with radiation processes token into account. Lots of spectral intervals are considered. Parallel MPI/OpenMP-based implementation is provided.

The Artificial SEM Image Generator (ARTIMAGEN) is a library that generates artificial scanning electron microscope (SEM) and helium-ion microscope images of various samples, including gold-on-carbon resolution sample, or some semiconductor features.

ARS is a physically-accurate robotics simulator written in Python. It's main purpose is to help researchers with to develop mobile manipulators and, in general, any multi-body system. It is open-source, modular, easy to learn and use, and can be a valuable tool in the process of robot design, in the development of control and reasoning algorithms, as well as in teaching and educational activities.

BallCalc is attempt to make a good, easy to use, full featured and FREE!!! ballistics calculator for the Windows Mobile based on the GNU External Ballistics engine, and eventually other, platforms.

Combines Blender's graphical interface and rendering capabilities with MBDyn's multi-body dynamics, aerodynamics, and aeroelastics simulation and analysis, for rapid modeling and realistic rendering of physics based multi-body simulations.