Initial Value Problems The code GAM numerically solves solves first order ordinary differential equations, either stiff or nonstiff in the form y'=f(x,y), with a given initial condition. The code GAMD is a generalization of GAM for the solution of Differential Algebraic Equations of index less than or equal to 3 in the form M y' = f(x,y), with a given initial condition. By Francesca Mazzia.
Jeff Cash Codes for boundary value problems, initial value problems, and geometric integration.
ODE Codes for ordinary differential equations from Netlib.
ODEPACK Serial Fortran Solvers for ODE initial value problems.