- Mathematical constants: An astonishing number of essays on mathematical constants, by Steven Finch
- Plouffe's inverter: Several constants computation records and Simon Plouffe's famous inverter
- Earliest uses of symbols for constants: A very interesting site on the origin of symbols for constants by Jeff Miller
- Yahoo pages on numbers: Many links on constants

- The number
*Pi*: Borwein's site with papers on p - David H. Bailey: His home page with some of his articles (on p and other subjects) and talks
- Richard Brent: Many of his articles and talks on computation and number theory are available online
- Le monde de
*Pi*: Very complete site on p by Boris Gourevitch (in)**French** - Alrededor de
*Pi*: Pages by Ramón Llorens Moreno (in)**Spanish** - Archimedes'
approximation of
*Pi*: Archimedes' algorithm in details *Pi*and the fine structure constant: An interesting occurrence of Archimedes' polygons and p in physics by James G. Gilson- Euler's constant: A page on the constant on g (with a few digits)
- The Golden Ratio: Some huge computations and statistics on the constant by Alexis Irlande
- Some number-theoretical constants: High precision calculations of many constants arising in number theory by Gerhard Niklasch
- Brun's
constant: This document includes
*Brun's constant*estimation and the computation of the twin primes' counting function by Thomas R. Nicely

- The Prime Pages: Prime number, research, records and resources by Chris Caldwell (Excellent!)
- Computational Number Theory: Very interesting pages on computational research in prime numbers, prime gaps, twin primes, ... by Thomas R. Nicely
- Mersenne Primes:
History, theorems and lists about
*Mersenne Primes*by Chris Caldwell - GIMPS: The
**G**reat**I**nternet**M**ersenne**P**rime**S**earch, a distributed computing project to find new huge*Mersenne Primes*(available in several languages)

- GMP page: The most popular multiprecision package, with impressive performances on large numbers
- Multiprecision page: From Paul Zimmermann. Includes links and comparisons between several multiprecision packages
- The HFLOAT page: Package by Jörg Arndt for computations in multiprecision
- The apfloat page: An easy to use and fast C++; arbitrary precision arithmetic package by Mikko Tommila
- CLN: The multi-precision number library from Bruno Haible
- Stu's
*Pi*page: A very nice p programs record sites

- Mathematicians: Mac Tutor History of Mathematics archive from the University of St Andrews in Scotland; a very important collection of biographies. By John J. O'Connor and Edmund F. Robertson. Following is a selection of biographies related to the site:
- The History of Mathematics: Some of the original works from Riemann, Hamilton, Newton, ... It also includes many links to mathematical sites on most subjects. By David R. Wilkins from Trinity College, Dublin
- Archimedes: An interesting page on Archimedes' works and life by Ilan Vardi
- Euler 2007: Celebration of Leonhard Euler’s Tercentenary in 2007
- The Euler Project: Some of the works of the great Leonhard Euler by Ed Sandifer
- Carl Friedrich Gauss: Complete site on the mathematician
- Bernhard Riemann: Very good and complete site on Riemann's biography by Dr. Dörte Haftendorn
- Mathematical quotations: Excellent site from the Furman University and collected by Mark R. Woodard. The site is entirely dedicated to mathematical quotations

- Math World: Eric Weisstein's huge (more than 10000 entries !) Mathematical Encyclopedia with many definitions, formulae, references, ... It's essential !
- Enhanced and evaluated virtual library: Guide to engineering and mathematics on the internet
- Les
Mathématiques: A series of courses in various mathematical fields
(Analysis, Algebra, ...), a newsletter, forum, ... Good level ! (in
)**French** - Cornell University library: 571 original mathematical books scanned and available online
- Sloane's On-Line encyclopedia of integer sequences: An exhaustive and impressive collection of Integer sequences
- The fifth arithmetical operation: How to compute square roots using only elementary arithmetic by Domingo Gómez Morín
- Karl Dilcher's huge bibliography: More than 2500 entries on Bernoulli Numbers !!

- tth: How to
convert your T
_{E}X files into a HTML file by Ian Hutchinson - Ghostscript: Interpreter and previewers for the PostScript language
- MiKT
_{E}X: The reference tool for typesetting mathematical documents

__Don't hesitate to report dead links or to
suggest new sites that
should be in this list.__