You don't necessarily need Microsoft Excel to work with an .xlsx file Reviewed by Ryan Perian This article explains what XLSX ...

Microsoft discontinued the lower-priced Microsoft Works suite, but you can convert old documents to use current Microsoft Office formats. If you have a spreadsheet from Works versions 6 and later, you ...

Convert OpenOffice.org Calc spreadsheets into a Microsoft Excel file to take advantage of Excel's built-in tools. OpenOffice.org spreadsheets default to a .xsc file extension, which certain versions ...