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ODS is a spreadsheet file format used by OpenOffice and LibreOffice. It is based on the OpenDocument standard and supports features like calculations, graphs, and formulas. ODS files are compatible with many spreadsheet programs, making them a popular choice for open-source software users.
XLSX is a more modern version of the XLS format used by Microsoft Excel. It stores spreadsheet data in an open XML format, offering better file compression and compatibility. XLSX files support complex formulas, charts, and formatting options, and they are widely used for business and financial data analysis.