Numerical Methods - A guide to on-line resources. Interval Computations - Indexes links relating to interval arithmetic and related issues. Tomasz Plewa's Numerical Analysis Directory - Directory of sites containing software for numerical analysis (mainly in Fortran). Level Set and Fast Marching Methods: - Tracking moving interfaces in computational geometry, materials sciences, robotics, image processing, and fluid mechanics; numerical techniques based on partial differential equations. Domain Decomposition Organization - Bergen, Norway. Information about the annual international Domain Decomposition meeting, links to people working in the field and information about books and other material related to Domain Decomposition. Newton's Method and High-order Iterations - Newton's iteration : History, convergence results, Halley's iteration and high order new iterations. A web text in HTML and PostScript. SQRT - Algorithms for Calculating the Square Root - Describing two major algorithms: one efficient in terms of size, the other in terms of speed. English/Portuguese. Orthogonal Polynomials and Special Functions - SIAM activity group. Newsletter, conferences, bibliography, reports, history, jobs, other resources. Foundations of Computational Mathematics (FoCM) - A nonprofit organization that supports and promotes research on foundations of computational mathematics. Holistic Numerical Methods Institute - A collection of resources on numerical methods aimed at undergraduates, maintained at the University of South Florida. Solve Equations by Successive Approximations - Approximation formulae to compute real and complex solutions of equations in a spreadsheet. Numerical Methods for PDEs with Java Applets - Distance learning course dealing with finite differences / elements, Monte-Carlo, Fourier and Lagrangian methods for the advection, diffusion, wave, Schrodinger, Burger and KdV equations. The commercial version of a course taught to science and engineering students at the Royal Institute of Technology in Stockholm (Sweden).