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Top / Science / Math / Numerical Analysis / Software

   Fast Fourier Transforms

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Addix.Spline
A comprehensive spline curve function library for creating and evaluating splines in Excel, VB and VBA. Free download of evaluation copy.
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).
Center for the Mathematics of Waves
Includes the Finite Element/Nystrom Solver, a two dimensional coupled finite element / Nystrom solver for the Helmholtz equation.
CSE - HSL
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.
CSE - LANCELOT
A standard fortran 77 package for solving large-scale nonlinearly constrained optimization problems. Free download by FTP.
Discrete Fourier Series Transform
Basic presentation of the discrete Fourier series transform. Explanations and formules. Raw source code to calculate numerical Fourier transforms.
DONLP2
Software for nonlinear programming.
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 fro
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.
GNU Octave Repository
Central location for custom scripts, functions and extensions to GNU Octave.
MAI Information Technology
Numerical, statistical, and signal processing subroutine libraries optimised for OS/2 platforms.
MatLinks Software Network
Providing the MatLinks ToolChest and Chorus ToolBox, peer-reviewed GNU Octave and Matlab/Simulink toolsuites under active development by scientists and engineers around the world.
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
Searchable repository of free numerical software.
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.
Optimumcut
Provides online optimisation and cutting data procurement service for all linear material types and offers computer aided ice skate sharpening and profiling services by express mail order.
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.
The Algae Programming Language
A high-level interpreted language for numerical analysis. Free (GNU GPL).

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