Excel

Microsoft Excel is a spreadsheet application written and distributed by Microsoft for Microsoft Windows. It allows using calculations, graphing tools, pivot tables, and a macro programming language called VBA. So, it is the most popular table processor available for these platforms since version 5 in 1993.

Microsoft Excel up until Excel 2007 version used a proprietary binary file format called Binary Interchange File Format (BIFF) and the .xls file extension. The specification was closed, but it has been published since 2008. Besides, most versions of Microsoft Excel can read CSV, DBF, SYLK, DIF, and other formats.