• Health & Fitness, Fitness Equipment
• XS3 file information
• April 24, 2026

An XS3 file is most commonly understood to be an old spreadsheet or worksheet file created by XESS, a legacy spreadsheet program. In simple terms, that means the file was meant to store spreadsheet-style information such as rows and columns of data, formulas, labels, values, and possibly technical or engineering calculations. XESS itself was a spreadsheet application used on systems …