Thread-safe library of Fortran 90 packages for solving nonlinear optimization problems, covering unconstrained and bound-constrained optimization, quadratic programming, nonlinear programming, systems of nonlinear equations and inequalities, and nonli...

Links to global optimization code, mainly in Fortran 77 and C, but some links to local minimizers as well.

Site discusses algorithm and has link to zip file with Fortran 77 code.

Fortran 77 code for general differentiable nonlinear programming using dense linear algebra, by Peter Spellucci.

Codes for network optimization.

Initializes a random sample of individuals with different parameters to be optimized using the genetic algorithm approach -- evolution via survival of the fittest. By David Carroll.

Modules for random number generation, plotting, sorting, ranking, combinatorics, network optimization, and optimization. Written in FWEB by Aleksandar Donev.

Minimizes the maximum of a set of smooth objective functions subject to general smooth constraints. Includes algorithm and problem descriptions, references, and pricing information. Free for academic use.

Fortran 90 code implementing the Differential Evolution method, a simple but powerful population-based, stochastic function minimizer.

Linear and non-linear optimization, constrained and unconstrained. Mainly Fortran 77 but some in C.