Simulation, analysis, and management of the movement of water
Please see the “Files” link above to download different versions. The One-Water Hydrologic Flow Model (MODFLOW-OWHM, MODFLOW-ONE) is an integrated hydrologic flow (IHM) model that is an enhanced fusion of multiple MODFLOW (MF) versions. While maintaining compatibility with existing MF versions, MF-OWHM includes: linkages for coupled heads, flows, and deformation; facilitation of self-updating models, additional observation and parameter options for higher-order calibrations; and redesigned code for faster simulations. MF-OWHM represents a complete IHM that fully links the movement and use of groundwater, surface water, and imported water for consumption by agriculture and natural vegetation on the landscape, and for potable and other uses. This provides the foundation needed to address integrated hydrologic problems such as evaluation of conjunctive-use alternatives, sustainability analysis, including potential adaptation and mitigation strategies, and best management practices.
FDS and Smokeview Development has moved to http://fire.nist.gov/fds please update your bookmarks.
Glimmer is an open source (GPL) three-dimensional thermomechanical ice sheet model, designed to be interfaced to a range of global climate models.
PySCeS is the Python Simulator of Cellular Systems
PySCeS is the Python Simulator of Cellular Systems. For a network of coupled reactions it does a stoichiometric matrix analysis, calculates the time course and steady state, and does a complete control analysis.
A collection of Fortran interfaces to the most common Open Source GIS libraries, plus some more Fortran-specific tools.
Mathematics software platform and script language
Hmd is a program for mathematical computations. It runs as an interactive environment as well as a script interpreter. Intended as a tool for numerical, applied mathematics, there is a basic engine for solving finite element models.
Application Integration for HPC Multiphysics
The OpenMultiphysics project is the home for community-driven development of application integration technologies designed to aid in the design and implementation of multiphysics simulation capabilities. Design and development in this project is driven by the Consortium for Open Multiphysics. Feel free to visit us at our GitHub site as well: https://github.com/IllinoisRocstar/IMPACT
Build and run environment for HPC codes on Windows
WHPC is a software bundle representing self-contained environment to build and run high performance numerically intensive sequential and parallel codes on Windows.
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
This is a programable scientific calculator with a scripting languge for automatic random error propagation in arbitrary mathematical expressions. The language allows expressions written as a collection of sub-expressions or user defined functions.
CGNU (Clean GNU) aims to use modern documentation technologies to clean the GNU project of bitrot and outdated build technology.
FLENS (Flexible Library for Efficient Numerical Solutions) is a C++ library for scientific computing. It can be considered as a very convenient and --- at the same time --- extremely efficient interface for BLAS and LAPACK. But it is much more than this
A library of optimized parameters and example source code for the use of generalized Langevin equation in molecular dynamics.
GVIB is a user friendly package for vibrational analysis. Given a molecular geometry, it will calculate vibrational frequencies and intensities using anharmonic internuclear potential.
record MIDI files from the PC keyboard
Record a melody as a MIDI file, right from the computer keyboard with no special hardware required. Current work on the project is aimed at music analysis. Rhythm and harmony have completed subroutines. A future version of the program will analyze MIDI files, rate their musical value, and recombine them to produce new tunes.
ParaStation is a robust and efficient cluster middleware, consisting of a high-performance communication layer (MPI) and a sophisticated management layer. Please notice, the public development has moved to github: https://github.com/ParaStation
Open-GMF is an open Ground Water Modeling Framework for hydrogeologists and reservoir engineers. It is an extensible development environment for finite-difference, finite-element, and finite-volume models tailored to specific problems.
tool for inverse modeling of the semiconductor devices
The PROFILE  is a tool for inverse modeling of the semiconductor devices using 2D data and advanced optimization driver. All the files and its documentation is available at the official homepage of Profile: http://profile.ewi.tudelft.nl/ REF:  G.J.L. Ouwerling. Inverse modelling with the PROFILE optimization driver. NASECODE VI Software Forum, Dublin, July 1989.
hybopt is a set of libraries to solve the identification and optimal control problems for hybrid (mechanistic/empirical) dynamic (ODE and DAE) models.
open source analogue of IBM OS/2 operating system
Trek7 the original multiplayer network star trek game from the early-mid 70s. We are hoping to revive this classic (no, its not netrek/mtrek, not even close). hopefully the SF community can help port this to modern day networks.