602Pro PC Suite
Marketed by Software602 as a free Office suite alternative. 602Pro PC Suite came with 602Text, 602Tab, 602Photo and 602Album.
"With the look and feel of MS Word, 602Text is the best word processor alternative on the market today. It internally uses the MS Word DOC format (9x/2000/XP)."
"602Tab is a Microsoft® Excel compatible spreadsheet with over 150 available functions. This easy-to-use application internally uses the XLS format (9x/2000/XP) and it can also open CSV and DBF files."
602Text uses the extension .wpd, but format is based on Microsoft Compound File format. Extension .wpt is the same, but signifies a template.
602Tab uses the extension .wls which is also based on Microsoft Compound File format.