Calculators written in Java (note: requires Java 1.1 or later)

• Clebsch gordan coefficient calculator
• 3j symbol calculator
• 6j symbol calculator
• 9j symbol calculator

Here are some codes for calculating angular momentum coupling coefficients by various authors. Contributions in other languages are welcome.

• Fortran 90 module.
• C routines, contributed by Riccardo Gusmeroli
• Maple routine, contributed by Ted Barnes

A paper describing the java calculator, with a link to the source code is available.
 
If you have any suggestions for improvement or any other comments, please email me using the address below.

There are also some other Clebsch-Gordan Calculators on the web, some of which are much faster than mine for high angular momenta because they are not analytic:

• A Java 3-j and Clebsch calculator which caculates analytic values for J<9 or 10 and approximate values for higher J.
• Another one in Israel which calculates decimal expansions for 3, 6 and 9-j symbols.