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AIPS  Astronomical Image Processing System  [open source  Unix, VMS, etc.] A software package for interactive (and, optionally, batch) calibration and editing of radio interferometric data and for the calibration, construction, display and analysis of astronomical images made from those data using Fourier synthesis methods.
Center for the Mathematics of Waves  Includes the Finite Element/Nystrom Solver, a two dimensional coupled finite element / Nystrom solver for the Helmholtz equation.
DONLP2  Software for nonlinear programming.
Decision Tree for Optimization Software  Linear and nonlinear optimization, constrained and unconstrained. Mainly Fortran 77 but some in C.
Discrete Fourier Series Transform  Basic presentation of the discrete Fourier series transform. Explanations and formules. Raw source code to calculate numerical Fourier transforms.
Elegant Mathematics, Inc.  Advanced algorithms for computational science. Robust Iterative Linear Solvers; Software tools for Parallelization of Algorithms and Computer Software; Approximation Method research. Research reports available in PS.
FreeFEM  Free general PDE solver driven by a user friendly language. Both a 2D and a 3D version are available. MacOS, Windows.
Freely Available Software for the Solution of Linear Algebra Problems  Software for highperformance computers available in source form for problems in numerical linear algebra, specifically dense, sparse direct and iterative systems and sparse iterative eigenvalue problems.
GNU Octave  Free numerical analysis and visualization environment similar to Matlab.
GNU Octave Repository  Central location for custom scripts, functions and extensions to GNU Octave.
JeanPierre Moreau's Home Page  This private website is dedicated to sources in Numerical Analysis in four languages: BASIC, C++, FORTRAN 90 and Turbo Pascal in Microsoft Windows environment.
MAI Information Technology  Scientific and engineering software for OS/2. Computers with OS/2 preinstalled along with emx extensions.
METIS: Serial Graph/Mesh Partitioning & Sparse Matrix Ordering  Graph, mesh, and hypergraph partitioning software. Free download, portable on most Unix systems that have an ANSI C compiler (e.g. GNU C).
MIT Aero/Astro Scientific Visualization  Visualization software developed at MIT.
Netlib  This is by far the largest repository of mathematical software in source code form, mostly in Fortran, though there is some in Matlab, C and other languages. Important directories include Lapack (linear algebra, eigenvalues, SVD, etc.), toms (Trans. on Math. Software), numeralgo (Numerical Algorithms), and the many 'PACKS such as MINPACK (minimization), QUADPACK (quadrature, integration), FFTPACK (Fast Fourier Transform), ODEPACK, ODRPACK, etc.
Numeritek  Home of Numerica, a library for solving hyperbolic partial differential equations.
Objectoriented finite element / numerical methods in C++  with ObjectOriented Programming in C++; VectorSpace C++ Library is for advanced numerical computation such as constrained optimization, variational methods, and Computational Mechanics.
Scientific Computing  Software and Algorithms for linear and nonlinear inverse Problems: Computerized tomography, wavelet applications, statical computations, multi parameter fit and more
Spline Curve Fit 3D  Software for complex three dimensional surfaces.
Stratos  3D finite element code based on unstructured grids designed at the Mathematics Department of Politecnico di Milano.
