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Top : Software : Scientific : Numerical Analysis

Nifty Free Image Viewers
One of my favorite adages is "A picture is worth a thousand words". It refers to the notion that a still image can convey a complex idea. Images can portray a lot of information quickly and more efficiently than text. They capture memories, and never let you forget something you want to remember, and refresh it in your memory.

(Read more)
TuxGuitar is a multitrack guitar tablature editor and player written in Java-SWT, It can open GP3 and GP4 files. Read more


    (commercial) An easy-to-use data analysis, mathematical and statistical environment based on the powerful, fast and efficient GAUSS Matrix Programming Language. GAUSS is used to solve real world problems and data analysis problems of exceptionally large scale. hot
  • Octave
    GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language. Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations. It is easily extensible and customizable via user-defined functions written in Octave's own language, or using dynamically loaded modules written in C++, C, Fortran, or other languages. Read more hot
  • AcouSTO
    AcouSTO (Acoustics Simulation TOol) is an open source Boundary Element Method (BEM) solver for the Kirchhoff-Helmholtz Integral Equation (KHIE). An arbitrary number of scattering bodies, sources, and plane waves is allowed.
  • ADMesh
    ADMesh is a program for processing triangulated solid meshes. Currently, ADMesh only reads the STL file format that is used for rapid prototyping applications, although it can write STL, VRML, OFF, and DXF files.
  • Aladdin
    a Computational Toolkit for Interactive Engineering Matrix and Finite Element Analysis
    ALBERTA is an Adaptive multiLevel finite element toolbox using Bisectioning refinement and Error control by Residual Techniques for scientific Applications.
  • Algae
    Algae is a programming language for numerical analysis. Algae was developed because we needed a fast and versatile tool, capable of handling large systems. Algae has been applied to interesting problems in aerospace and related fields for more than a decade.
    (commercial) a series of mesh generation tools designed specifically for the casting industry. AMESH uses a unique meshing method to construct multi-component (casting, mold, core, chill, etc.) geometry simultaneously. This ensures an accurate finite element model which is representative of the problem at hand
    Automatically Tuned Linear Algebra Software: an approach for the automatic generation and optimization of numerical software for processors with deep memory hierarchies and pipelined functional units
    BLOPEX is a package, written in C, that at present includes only one eigenxolver, Locally Optimal Block Preconditioned Conjugate Gradient Method (LOBPCG). BLOPEX supports parallel MPI-based computations. The complex arithmetic is not yet supported in BLOPEX C codes, but is available for MATLAB codes.
  • Blossom IV
    Blossom IV is a minimum weight perfect matchings for point-sets in two or three dimensions with different norms as well as matchings for graphs given by a distance matrix.
  • BoxLib
    BoxLib is a library of C++ classes that facilitate the development of block structured finite difference algorithms such as arise in the solution of systems of partial differential equations. BoxLib is particularly useful in designing and building adaptive algorithms. BoxLib contains rich data structures for describing operations which take place on data defined in regions of index space that are unions of non-intersecting rectangles.
  • Cactus
    Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure easily enables parallel computation across different architectures and collaborative code development between different groups. Cactus originated in the academic research community, where it was developed and used over many years by a large international collaboration of physicists and computational scientists.
  • CalculiX
    CalculiX is a package designed to solve field problems. The method used is the finite element method. With CalculiX Finite Element Models can be build, calculated and post-processed. The pre- and post-processor is an interactive 3D-tool using the openGL API. The solver is able to do linear and non-linear calculations. Static, dynamic and thermal solutions are available.
  • CAP
    (commercial) CAP is a 3-D finite element analysis program that simulates solidification processes. CAP can be used on various casting processes, different mold materials, and multiple casting materials. CAP can also be used to optimize casting geometry in order to improve part integrity and reduce costs.
  • Cart3d
    Cart3D is a high-fidelity inviscid analysis package for conceptual and preliminary aerodynamic design. It allows users to perform automated CFD analysis on complex geometry. The package includes utilities for geometry import, surface modeling and intersection, mesh generation and flow simulation. Currently the package includes two flow simulation codes, Tiger, and flowCart.
  • Cassowary
    Cassowary is an incremental constraint solving toolkit that efficiently solves systems of linear equalities and inequalities. Constraints may be either requirements or preferences. Client code specifies the constraints to be maintained, and the solver updates the constrained variables to have values that satisfy the constraints.
  • CastCAE
    (commercial) CastCAE is the tool for foundries interested in casting simulation. CastDESIGN is a revolutionary simulation package that helps in designing the feeding systems for your castings. With CastCHECK, every machine designer can check and improve the castability of the components- without extensive foundry knowledge.
  • Cheap Matrix
    Cheap Matrix is a C++ Matrix class optimized for memory before speed. It enables handling huge matrices, and can link with LAPACK.
    CLUTO is a software package for clustering low- and high-dimensional datasets and for analyzing the characteristics of the various clusters. CLUTO is well-suited for clustering data sets arising in many diverse application areas including information retrieval, customer purchasing transactions, web, GIS, science, and biology.
    The Coordinate and Sensitivity Calculator for Multi-disciplinary Design Optimization CSCMDO is a general purpose multi-block three-dimensional volume grid generator which is suitable for Multi-disciplinary Design Optimization.
  • CSDP
    CSDP is a library of routines that implements a predictor corrector variant of the semidefinite programming algorithm of Helmberg, Rendl, Vanderbei, and Wolkowicz.
  • diffpack
    (commercial) consists of a collection of object-oriented libraries (implemented in C++) for solving partial differential equations with a particular focus on finite element methods, and several Unix utilities for general software management and numerical programming
  • dstool tk
    dstool tk is a dynamical systems toolkit. It's very useful in the visual study of nonlinear systems and Chaos, as well as for finding numerical solutions to differential equations.
  • DUNE
    DUNE, the Distributed and Unified Numerics Environment, is a modular toolbox for solving partial differential equations (PDEs) with grid-based methods. DUNE is first of all a set of abstract interfaces which embody concepts from scientific computing.
  • Fastflo
    (commercial) Fastflo is a finite element package for the numerical solution of partial differential equations (PDEs) in one-, two- and three-dimensional regions.
    FEATFLOW is both a user oriented as well as a general purpose subroutine system for the numerical solution of the incompressible Navier-Stokes equations in two and three space dimensions.
    FEMSET is a library of FEM routines.
  • FLOW-3D
    (commercial) FLOW-3D is a general purpose CFD software package capable of simulating a wide variety of fluid flows.
  • FreeFEM
    FreeFEM is an implementation of the Gfem language dedicated to the finite element method. It provides you a way to solve Partial Differential Equations (PDE) simply.
  • gridpak
    gridpak is a program which creates an orthogonal grid when provided with the boundary information. The other programs in gridpak are support for this program and do such things as aid in the defining of the grid boundary or finding the bathymetry on the finished grid.
  • GSL shell
    GSL shell is an interactive command line interface that gives easy access to the GNU Scientific Library (GSL) collection of mathematical methods for numerical computations.
  • GUST
    GUST is an unstructured grid generator, flow analysis code, graphical user interfaces, and post-processing utilities.
    HydroAcoustic Signal Analysis System: a modular system for passive sonar signal analysis. It can be used for biological research or surveillance
    HOPSPACK solves derivative-free optimization problems in a C++ software framework. The framework enables parallel operation using MPI (for distributed machine architectures) and multithreading (for single machines with multiple processors or cores).
  • HQP
    HQP is a solver for nonlinearly constrained large-scale optimization. It is intended for problems with sufficient regular sparsity structure, e.g. multistage problems, discrete-time optimal control problems.
  • keyFE2
    keyFE2 is a FE (finite elements) program devoted to the resolution of discretized partial derivative equations.
  • KFem
    This is a client/server/CORBA software aiming at solving partial differential equations.The server provides the solver while the client provides the input data and the handling of the output using a graphic library, vtk.
  • KMonodim
    KMonodim is a simple solver for monodimensional problems. It provides calculation of eigenvalues and eigenfunctions for a given system, Richardson extrapolation to achieve better precision & integral evaluations.
  • kOctave
    kOctave is a KDE GUI for Octave. kOctave contains a editor with syntax highlighning and a help browser, you can work almost the same way as in Matlab.
  • LASSPTools
    LASSPTools is a collection of Unix utilities for numerical analysis and graphics. It was written around 1990.
  • levmar
    levmar is a robust and efficient C/C++ implementation of the Levenberg-Marquardt non-linear least squares algorithm. It includes double and single precision L-M versions, both with analytic and finite difference approximated Jacobians. It also has some support for constrained non-linear least squares, allowing linear equation and box constraints to be imposed. Availability of LAPACK/BLAS is strongly recommended for carrying out linear algebra computations.
    (commercial) LINDO is a versatile tool for solving linear, integer, and quadratic programming problems.
  • mathnium
    Mathnium is a program for interactive numerical computations. With its comprehensive library of functions for a variety of problems in applied mathematics, and with its facilities for the definition and manipulation of arrays of numbers as basic data objects, Mathnium allows you to solve numerical problems rather painlessly and without a great deal of programming effort.
    MAXDET is an implementation of a long-step path-following method for determinant maximization problems. Includes full C-source (with calls to LAPACK), which can be used directly or via matlab mex file interfaces, matlab examples, and documentation.
  • Mesh-Maker
    Mesh-Maker is a comparatively simple program for generating unstructured meshes over a pre-specified orography.
  • Meshtools
    Meshtools is a finite Element Method (FEM)Mesh-Generating Facility in MATLAB.
    METIS is a set of programs for partitioning graphs, partitioning finite element meshes, and for producing fill reducing orderings for sparse matrices.
    MultiGrid Galerkin Hierarchical Adaptive Triangles: a FORTRAN program for the solution of general second order linear self-adjoint elliptic partial differential equations with Dirichlet, natural or mixed boundary conditions on 2D polygonal domains (possibly with holes)
  • Mgsor
    Mgsor solves the Laplace equation in cartesian coordinates, discretized with the 5-point approximation to the derivative.

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