Solving linear, nonlinear equations, ordinary differential equations, ... using numerical methods in fortran

Nonlinear Equation Solver with Modern Fortran

A library that provides routines to compute the solutions to systems of nonlinear equations.

Modern Fortran library for finding the roots of real and complex polynomial equations

Jacobian-Free Newton-Krylov solver with Hookstep-trust-region approach

a suite of Fortran 90 codes for globally convergent homotopy algorithms