See also:

• Science: Math: Numerical Analysis: Companies  (3)
• Science: Math: Software  (516)

• Netlib   - Searchable repository of free numerical software.

• Addix.Spline - A comprehensive spline curve function library for creating and evaluating splines in Excel, VB and VBA. Free download of evaluation copy.
• Astronomical Image Processing System - A software package for calibration, data analysis, image display, plotting, etcetera on astronomical data.
• Astronomy and Numerical Source Codes - Astronomical computations and mathematical functions source programs in C. Home page of the Cephes Mathematical Library.
• Boundary Element Method - Resources: Acoustics, Laplace and Helmholtz Problems. Book, manuals, Fortran software (Free and to purchase).
• CSE - LANCELOT - A standard fortran 77 package for solving large-scale nonlinearly constrained optimization problems. Free download by FTP.
• Decision Tree for Optimization Software - Ready to use solutions for optimization problems, or at least a way to build such a solution using work done by others. Where possible, public domain software is listed.
• Discrete Fourier Series Transform - Basic presentation of the discrete Fourier series transform. Explanations and formules. Raw source code to calculate numerical Fourier transforms.
• Easy-Fit - Used to identify parameters in explicit model functions, dynamic systems of equations (steady-state), Laplace transforms, ordinary differential equations, differential algebraic equations and one-dimensional partial differential equations. Proceeding from given experimental data. For example, observation times and measurements, the minimum least squares distances of measured data from a fitting criterion are computed, that may depend on the solution of the dynamic system.
• 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 high-performance computers available in source form for problems in numerical linear algebra, specifically dense, sparse direct and iterative systems and sparse iterative eigenvalue problems.
• Genetic Optimization Algorithm - Freeware used to solve optimization problems with several real and binary parameters and non linear objective functions and constraints. Includes illustration of program and links to the author's other webpages.
• 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.
• HSL Archive - HSL (formerly the Harwell Subroutine Library) is a collection of ISO Fortran codes for large scale scientific computation, written by members of the Numerical Analysis Group and other experts. Free download by FTP.
• Jean-Pierre Moreau's Home Page - This private website is entirely dedicated to sources in numerical analysis in four languages: Basic, C++, Fortran and Pascal in Microsoft Windows environment.
• MAI Information Technology - Numerical, statistical, and signal processing subroutine libraries optimised for OS/2 platforms.
• MEDEA: Matrix Exponential Differential Equation Algorithm - Algorithm for the numerical integration of systems of ordinary differential equations arising in chemical problems. C ocde, free to use.
• 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.
• Newmat C++ Matrix Manipulation Library - For the manipulation of matrices in the C++ language, oriented towards science and engineering applications.
• Numerical Methods - Notes and Fortran code on topics including: Finite elements, finite differences, boundary elements, integral equation methods, optimisation,linear systems, numerical integration, ODEs.
• Object-oriented Finite Element / Numerical Methods in C++ - VectorSpace C++ Library for advanced numerical computation such as constrained optimization, variational methods, and computational mechanics.
• Ordinary Differential Equation System Solver - A Java-Applet/Application for solving ODE systems.
• Reactor Simulation Editor, Introduction with Examples - The Reactor Simulation Editor (rsedit) is a software package designed to solve finite difference equations in a simplified way. The tool kit includes: a geometry editor, data structure editors, equation editor and an HTML output library.
• Scientific Computing - Software and Algorithms for linear and nonlinear inverse Problems: Computerized tomography, wavelet applications, statical computations, multi parameter fit and more
• SLEIGN2 - FORTRAN programs for solving Sturm--Liouville equations.
• Spline Curve Fit 3D - Software for complex three dimensional surfaces.
• TeLa - The tensor language. Scientific computing language and environment.
• Test Set for Initial Value Problem Solvers - Test problems, experimental results from a number of proven solvers, solvers, subroutines providing a common interface and links for Initial Value Problems for ODEs, DAEs and IDEs.
• WNLIB C Subroutine Library - Will Naylor's free, unrestricted ANSI-C subroutine library including numerical routines such as conjugate-gradient and conjugate-directions, simplex method, transportation problem, fast-Fourier transform, matrix and vector operations.
• XRC - Exact Reals in C - An implementation of lazy exact real arithmetic in C by Keith Briggs.