Blended Implicit Methods (BiM)
- Fortran 77 code implementing a variable order-variable stepsize method for (stiff) initial value problems for ODEs. The order of the method varies from 4 to 14, according to a suitable order variation strategy.
- http://web.math.unifi.it/users/brugnano/BiM/

ODE
- Codes for ordinary differential equations from Netlib.
- http://www.netlib.org/ode/index.html

Fortran Programs for Solving Boundary-Eigenvalue Problems
- Forran 77 codes by M. Marletta and L. Greenberg.
- http://www.cf.ac.uk/maths/marlettam/programs.html

Test Set for Initial Value Problem Solvers
- Test sets, solvers and links for Initial Value Problems for ODEs.
- http://pitagora.dm.uniba.it/~testset/

BIFPACK
- Fortran 77 package for bifurcation, continuation and stability analysis.
- http://www.bifurcation.de/software.html

ODEPACK
- Serial Fortran Solvers for ODE initial value problems.
- http://www.llnl.gov/CASC/odepack/

Differential Equation Software
- Code for Initial Value and Boundary Value Problems.
- http://www.ma.ic.ac.uk/~jcash/

Ordinary Differential Equations
- Code from the Institute of Numerical Mathematics of Martin Luther University.
- http://cantor1.mathematik.uni-halle.de/institute/numerik/software/

DVERK
- Fortran 77 subroutine written by Hull, Enright and Jackson for the numerical solution of systems of initial value problems for ordinary differential equations.
- http://www.cs.toronto.edu/NA/dverk.f.gz

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 Equatio
- http://pitagora.dm.uniba.it/~mazzia/ode/readme.html