The Horde_Data_hermes_csv class extends Horde's CSV Data class with Hermes-specific handling.
The Horde_Data_hermes_tsv class extends Horde's TSV Data class with Hermes-specific handling.
The Horde_Data_hermes_xls class extends Horde's TSV Data class with Hermes-specific handling and a few tweaks for files to open directly in Excel.
The Horde_Data_iif class implements the Horde_Data:: framework for QuickBooks .iif files.
The Horde_Data_qbxml class implements the Horde_Data:: framework for QuickBooks qbXML files.