I am the Lead Developer and Operator for the ADCIRC Surge Guidance System (ASGS) (https://github.com/jasonfleming/asgs), a software automation system and collection of utilities for the finite element ADCIRC (ADvanced Circulation) coastal ocean model (http://www.adcirc.org). I implemented the i/o code in ADCIRC for natively reading and writing XDMF data files using the Fortran XDMF API. I've also created/maintain/extend standalone utility programs that convert to/from ADCIRC ascii file format to XDMF format using the Fortran XDMF API. Finally, I have created/maintain/extend standalone utility programs that generate XDMF-compliant XML files for ADCIRC's native NetCDF4 formatted output files, taking advantage of the fact that NetCDF4 uses the HDF5 library underneath to write the files. This results in a set of output files that simultaneously satisfies the NetCDF4, HDF5, and XDMF format standards. More information is available from http://www.seahorsecoastal.com.