ODS stands for Open Document Spreadsheet. Files that contain the .ods file extension are normally created by the OpenOffice and StarOffice spreadsheet or "calculator" applications.
The OpenOffice and StarOffice applications are open-source office suite products that were created as a free alternative to the costly Microsoft Excel product. These programs allow the interchange of spreadsheet files between different software applications. For example, if a user creates a spreadsheet in Excel, a user running OpenOffice can open that spreadsheet without having to have Excel installed on his or her system.
ODS files are created using the XML-based standard. They contain spreadsheets which contain columns, rows and text that are similar to the files created by the Microsoft Excel application.
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