Java applets illustrating Archimedes' construction graphically and interactively.

Armpi 4 is a program that calculates pi in decimal for the ARM processors (in particular for the Acorn Risc PC).

Austin's Wasted Cycles is a CGI which computers either pi or factorials over the web.

Good Pi calculating porograms and FFT multiplication, NTT, Nussbaumer convolution, and Schonhage-Strassen convolution.

Computing Pi by Harry J. Smith both explains and provides examples of how to calculate pi.

Digits and information, including a comparison of computational programs for Linux, Windows and Mac.

A project describing how to estimate the value of pi using Buffon's Needles. Includes math description and complete Delphi source code.

Home of PIOLOGIE, a library for arbitrary precision arithmetic, operating on natural, integer and rational numbers. Also used for calculating pi.

Huge supply of different pi programs known as well as links to most of the unknown ones.

Provides a program and explanation for pi computations.

Online Php program that lets you verify that pi is same in 2d 3d and 4d.

Calculation Program based on FFT and AGM. This is a package to calculate PI in huge digits, programmed for a benchmark of a FFT based multiple-precision routine.

A program that trains memorizing Pi. Provides the software for Windows.

Includes 50,000 digits of PI, a C program to work out PI and a page on "the most useless formula for computing PI".

Distributed computing project calculating specific parts of Pi in Hexadecimal system.

A Program in C to compute the famous transcendental, and some remarks on making it work with the Borland Turbo C++ and other information on Pi.

List of downloadable source code of open source programs to compute Pi.

A fast program to compute Pi and a comparison with other programs run on windows.

Algorithms and software for calculating pi and e.