Newmat C++ Matrix Manipulation Library - For the manipulation of matrices in the C++ language, oriented towards science and engineering applications. 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. 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. Boundary Element Method - Resources: Acoustics, Laplace and Helmholtz Problems. Book, manuals, Fortran software (Free and to purchase). Netlib - Searchable repository of free numerical software. MIT Aero/Astro Scientific Visualization - Visualization software developed at MIT. Scientific Computing - Software and Algorithms for linear and nonlinear inverse Problems: Computerized tomography, wavelet applications, statical computations, multi parameter fit and more GNU Octave Repository - Central location for custom scripts, functions and extensions to GNU Octave. FreeFEM - Free general PDE solver driven by a user friendly language. Both a 2D and a 3D version are available. MacOS, Windows. SLEIGN2 - FORTRAN programs for solving Sturm--Liouville equations. 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. Astronomy and Numerical Source Codes - Astronomical computations and mathematical functions source programs in C. Home page of the Cephes Mathematical Library. Numerical Methods - Notes and Fortran code on topics including: Finite elements, finite differences, boundary elements, integral equation methods, optimisation,linear systems, numerical integration, ODEs. Ordinary Differential Equation System Solver - A Java-Applet/Application for solving ODE systems. Addix.Spline - A comprehensive spline curve function library for creating and evaluating splines in Excel, VB and VBA. Free download of evaluation copy. GNU Octave - Free numerical analysis and visualization environment similar to Matlab. 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. 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. 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).