Open Source BSD Simulation Software

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.

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.

TexGen is a geometric textile modelling software package to be used for obtaining engineering properties of woven textiles and textile composites. Citing TexGen We would be grateful if you could acknowledge use of TexGen where appropriate and suggest using one of the following references: L P Brown and A C Long. "Modelling the geometry of textile reinforcements for composites: TexGen", Chapter 8 in "Composite reinforcements for optimum performance (Second Edition)", ed. P Boisse, Woodhead Publishing Ltd, 2021, ISBN: 978-0-12-819005-0. https://doi.org/10.1016/B978-0-12-819005-0.00008-3 Lin, H., Brown, L. P. & Long, A. C. 2011. Modelling and Simulating Textile Structures using TexGen. Advanced Materials Research, 331, 44-47. To reference version 3.13.0 please use: Louise Brown, mike-matveev, & georgespackman. (2023). louisepb/TexGen: TexGen v3.13.1 (v3.13.1). Zenodo. https://doi.org/10.5281/zenodo.8221491

The goal of this project is to open the OpenFOAM CFD toolbox to community contributed extensions. Visit https://sourceforge.net/p/openfoam-extend/wiki/Home/ for more information. OPENFOAM(R) is a registered trademark of OpenCFD Limited.

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.

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

DICE is a Discrete Integrated Circuit Emulator. It emulates computer systems that lack any type of CPU, consisting only of discrete logic components.

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

An Qt based HP-41cx Emulator first based on Eric's NSIM-0.61 Project. Ported to C++ and extended by an graphical Qt-based User-interface. Since Oct.2014 I developed my own NUT-Core implementation which is quite different from Eric's one. I called it NewT in fact of the existing NewT NUT Hardware revival.

StochPy - Stochastistic modeling in Python - is an easy-to-use package, which provides several stochastic simulation algorithms and unique analysis techniques, which can be used for stochastic simulations of biochemical systems.

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

GIMIAS is a workflow-oriented environment for solving advanced biomedical image computing and individualized simulation problems, which is extensible through the development of problem-specific plug-ins. In addition, GIMIAS provides an open source framework for efficient development of research and clinical software prototypes integrating contributions from the Physiome community while allowing business-friendly technology transfer and commercial product development.

Open-source CT/ Radiography simulation package. XRaySim works seamlessly with commercial CAD packages and performs highly detailed scan simulations, with virtual X-ray sources and detectors, simulating cracks/ inclusions etc. very easily

This is a sophisticated & integrated simulation and analysis environment for dynamical systems models of physical systems (ODEs, DAEs, maps, and hybrid systems). It supports symbolic math, optimization, continuation, data analysis, biological apps...

jFAST is a simple finite automata (FA) graphical simulation utility; it is designed to feature simple mechanisms for creating, editing, and simulating FA. jFAST is ideal for use by students, instructors, and self-guided explorers alike.

Nemo is an individual-based, forward-time, genetically explicit, and stochastic simulation software designed for the study of the evolution of life history and quantitative traits, and genetic markers under various types of selection, in a spatially explicit, metapopulation framework.

OpenVLAB is an open source integrated framework for the numerical simulation of fluid flows (CFD) based on the resolution of Navier-Stokes equations. It is designed for analysis, design & optimization on airfoils, wings, wind-turbine, and much more..

Our goal is to create an open source framework and toolset for modeling dynamic cellular network functions, and to develop a user community committed to using, extending and exploiting these tools to further our knowledge of biologic processes.

NCE Calculation Framework is a library of routines, models and data applicable to chemical and process engineering calculations, written in Java. -- NEW -- www.chesolver.com *ONLINE CALCULATORS*. A set of solvers to perform calculations consistently on any device, from smart-phone to desktop. The project includes the following ready to use software all based on the same core library: * Online Calculators at www.chesolver.com * Extensions for Libreoffice/Openoffice Calc spreadsheet: - NCE: https://extensions.libreoffice.org/extensions/nce - NCE-Units: https://extensions.libreoffice.org/extensions/nce-units Check out also our video channel: https://www.youtube.com/channel/UCt2EGdw33k2u19PnZAi8YJA

Sinalgo is a simulation framework for testing and validating network algorithms. It allows for quick prototyping and verification in freely customizable network settings. It is mainly suited for packet-oriented wireless networks.

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

MEMBPLUGIN is a membrane analysis tool for molecular-dynamics simulations. It is a collection of visual and command-line tools that can be run within the Visual Molecular Dynamics (VMD) environment to analyze biomolecular simulations of lipid bilayers.

TRIAERO is the Triangulated Aerodynamics Suite; a collection of Open Source Free Software programs intended to perform simplified aerodynamics calculations over unstructured 3D bodies. TRIAERO uses the GTS library to work with triangulated surfaces.

open-source flight simulator, for RC-models and real aircraft, with a special orientation towards gliders. OpenSceneGraph based full 3D renderer.