A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If you have a program that undeletes deleted files you could check your hard drive for the Excel backup files (presuming you have auto-backup enabled and the file was open long enough) and restore them. Look for them by date/time stamp. Next time you open Excel it will see the undeleted backup files, assume it crashed, and offer to recover them for you.
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