SHTOOLS - Tools for working with spherical harmonics
- Fortran 95 code to perform (among others) spherical harmonic transforms and reconstructions, rotations of spherical harmonic coefficients, and multitaper spectral analyses on the sphere.
- http://www.ipgp.jussieu.fr/~wieczor/SHTOOLS/SHTOOLS.html

Software programs
- CONHYP evaluates the confluent hypergeometric function for large, complex arguments. PFq evaluates the generalized hypergeometric function for large, complex arguments. Both are written by Warren F. Perger.
- http://www.ece.mtu.edu/faculty/wfp/codes.html

Voigt and Complex Error Function
- By F. Schreier.
- http://www.op.dlr.de/ne-oe/ir/voigt.html

Special Functions code
- Routines to accompany the book "Computation of Special Functions", by Shanjie Zhang and Jianming Jin.
- http://jin.ece.uiuc.edu/routines/routines.html