OpenDocument Flat XML Spreadsheet (.fods)
The FODS (OpenDocument Flat XML Spreadsheet) file extension, developed by Oracle, is used for storing spreadsheet data in a plain XML format, making it more human-readable and easier to generate automatically without a spreadsheet editor. Unlike the more common ODS format, which uses a ZIP container, FODS files are not supported by Microsoft Excel but can be opened with OpenOffice Calc. This format was introduced as part of the ODF 1.2 specifications by OASIS.