stiff_ode, a Fortran90 code which considers an ordinary differential equation (ODE) which is an example of stiffness.
The information on this web page is distributed under the MIT license.
stiff_ode is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version and an R version.
lorenz_ode, a Fortran90 code which approximates solutions to the Lorenz system, creating output files that can be displayed by gnuplot().
predator_prey_ode, a Fortran90 code which solves a pair of predator prey ordinary differential equations (ODE).