Codes for multiple precision arithmetic, uniform and normal random number generators, irreducible/primitive trinomials, and parallel sorting. Released under the GNU General Public License.

Programs for aeronautical engineering, many from NASA or USAF, complete with public domain source code, instructions and sample cases on CD-ROM. [Commercial]

Generators for linear ordering and clustering problems, by John E. Mitchell.

Collection of Fortran 77 routines that address many traditional areas of mathematical software, including approximation, ordinary and partial differential equations, linear algebra and eigensystems, optimization, quadrature, root finding, special func...

A coupled system of climate components for Earth, Mars and Titan developed at the University of Hamburg. Includes Fortran 90 source code, papers, images, and a forum.

Subroutines for control theory, calculating eigenvalues of Hamiltonian matrices, packing and unpacking symmetric or triangular matrices, and examples of discrete- and continuous-time algebraic Riccati equations.

Fortran and C codes by Dong Liang.

By Professor Kevin D. Jones of the U.S. Naval Postgraduate School.

Public domain package by Michel Olagnon of general and specialized sorting and ranking routines in Fortran 90. Specialized routines include partial sorts, partial ranks, unique sorts, unique ranks, partial and unique sorts, as well as partial and uniq...

Fortran 90 module to perform am n-dimensional optimal interpolation (OI). The optimal interpolation allows one to interpolate arbitrarily located observations to a regular grid using a background field as first guess.