ods
What is a .ods file?
application/vnd.oasis.opendocument.spreadsheet
ODS is the OpenDocument Spreadsheet format, an ISO-standardized spreadsheet stored as a ZIP archive of XML. It is the native spreadsheet format of LibreOffice and OpenOffice Calc, supporting multiple sheets, formulas, and formatting. It is the open-standard counterpart to XLSX.
How to use a .ods file
Use an example ODS to test OpenDocument spreadsheet parsing, formula and multi-sheet handling, and converters between ODS and XLSX or CSV.