These libraries in Fortran 77 and C90 provide software to solve a variety
of problems in computational mathematics. We believe the software
for quadrature, non-stiff differential equations, and one-dimensional zero
finding offer advantages in features, efficiency, and reliability over
other software available. Support for installation is free.
Use of individual routines on multiple computers must be must be obtained
by purchase of the individual routine. Support will probably be
cheapest for you in this way also.
This software is part of the MATH77/mathc90 collection here.