The HDF Forum allows HDF users to communicate with each other. Users are not required to subscribe to this discussion board to see prior posting archives, but must subscribe to it in order to post messages:
Users can submit Software Patches, and register Third-party Filters (Compression) and User-defined Link Classes with The HDF Group.
The HDF Group maintains a list of third-party and HDF Software Using HDF5. If you have additions to this list, please send them to the help desk.
Papers and published materials by users can be found via the Media page.