Fortran 77 and RATFOR code to fit smoothing splines using generalized cross-validation.

Fortran 77 codes by Ilpo Vattulainen.

Fortran 90 code by Kelley Pace.

Fortran 90 code by Michael Schulz and Manfred Mudelsee to estimate red-noise spectra directly from unevenly spaced time series, without requiring interpolation.

Determines one-sided tolerance limits (in particular, A- and B-basis material property values) for regression models in the presence of between-batch variability. By Mark Vangel.

Fortran 77 statistical library by James Filliben.

Fortran 77 code for statistics by Charlie Reeve, covering probability distributions, random number generation, least-squares calculations, and other topics.

Fortran subroutines for calculating smoothing splines for various kinds of data and geometries, with automatic knot selection.

Poisson Iteratively Reweighted Least Squares Program for Additive, Multiplicative, Power, and Non-linear Models, by Leif E. Peterson, Journal of Statistical Software v2 (1997).

Fortran 90 code by Paul N. Somerville, appearing in the Journal of Statistical Software volume 3.