CHLone is a CGNS/SIDS compliant mapping on HDF5. You can read/write CGNS/HDF5 files and access to node through a C API interface or using a Python module.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.
