Some users can still find ancient spreadsheet tables saved in no longer used .sxc from the very first version of OpenOffice and wonder how to open or export the data to modern format, for example MS Excel via sxc to xlsx conversion.
MS Office / Excel no longer supports opening of this file type, but OpenOffice or LibreOffice Calc still should and are probably your best options how to convert the data to XLSX or ODS format.
Updated: October 10, 2023