HDF5 is an efficient, well-documented, non-proprietary binary data format
and library developed and maintained by the HDF Group. The library provided
by the HDF Group is written in C and available under a liberal BSD-style
Open Source software license. It has over 600 API calls and is very powerful
and configurable, but it is not trivial to use.
JHDF5 is a Java binding for HDF5 focusing on ease-of-use, which was
developed by CISD and is now maintained by ETH SIS. It is available ...