HDF is an acronym for Hierarchical Data Format - a data file format for storing scientific data, allowing one to organize data into datasets as multidimensional arrays, and groups of objects.
User guide for HDF4: https://www.hdfgroup.org/release4/doc/UsrGuide_html/UG_Utils.html
(previous: See http://freshmeat.net/projects/hdf/ for links to the HDF home page.)
BessyHDFViewer [L1 ] is a data visualization software for HDF data files.
With BessyHDFViewer you can:
In addition to HDF5 files, plot whitespace-separated ASCII files and the older HDF4 format of PTB