The CFD General Notation System (CGNS) provides a standard for recording and recovering computer data associated with the numerical solution of fluid dynamics equations.
WE HAVE MOVED! Very old (unsupported) stable releases can still be found here, but the new repository is at https://github.com/CGNS
CGNS++ is an object oriented interface to provide access to CGNS (CFD General Notation System) databases. It is similar to the existing C and FORTRAN interfaces provided by www.cgns.org, but uses an object oriented abstraction of the underlying SIDS.