Inverse Symbolic Calculator
- Programs and specialized tables of mathematical constants dedicated to the identification of real numbers: a project at the Centre for Experimental and Constructive Mathematics.
- http://oldweb.cecm.sfu.ca/projects/ISC/

On-line Numerical Methods
- A web-based numerical methods simulator for student use.
- http://mn.fe.up.pt/second_en.htm

Solve Equations by Successive Approximations
- Approximation formulae to compute real and complex solutions of equations in a spreadsheet.
- http://members.ispwest.com/patrussell/approximations/introduction.htm

Holistic Numerical Methods Institute
- A collection of resources on numerical methods aimed at undergraduates, maintained at the University of South Florida.
- http://numericalmethods.eng.usf.edu

Foundations of Computational Mathematics (FoCM)
- A nonprofit organization that supports and promotes research on foundations of computational mathematics.
- http://www.focm.net/

Orthogonal Polynomials and Special Functions
- SIAM activity group. Newsletter, conferences, bibliography, reports, history, jobs, other resources.
- http://math.nist.gov/opsf/

IPNet
- Inverse Problems Network, for the area of inverse or ill-posed problems.
- http://www.mth.msu.edu/ipnet/

Numerical Methods
- A guide to on-line resources.
- http://tonic.physics.sunysb.edu/docs/num_meth.html

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 eng
- http://www.lifelong-learners.com/pde

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.
- http://www.pedrofreire.com/sqrt/

External Numerical Analysis Sources
- Compiled by Nick Gould, Rutherford Appleton Laboratory.
- http://www.numerical.rl.ac.uk/external/external.html

MGNet
- Multigrid method resources. Sites, publications, software.
- http://casper.cs.yale.edu/mgnet/www/mgnet.html

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.
- http://www.ddm.org/

Tomasz Plewa's Numerical Analysis Directory
- Directory of sites containing software for numerical analysis (mainly in Fortran).
- http://www.labyrinth.net.au/~ctrans/tomasz.html

Interval Computations
- Indexes links relating to interval arithmetic and related issues.
- http://www.cs.utep.edu/interval-comp/

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.
- http://www.math.berkeley.edu/~sethian

NA-Net
- Searchable weekly email digest on numerical analysis.
- http://www.netlib.org/na-net/na_home.html

N-Body/Particle Simulation Methods
- Overview of N-body methods.
- http://www.amara.com/papers/nbody.html