SheetJS Spreadsheet data parser and writer
Extracting text from files of various type including html, pdf, doc, docx, xls, xlsx, csv, pptx, png, jpg, gif, rtf, text/*, and various open office.
CLI tool for working with spreadsheet files
Excel (XLSB/XLSX/XLSM/XLS/XML) and ODS (ODS/FODS/UOS) spreadsheet parser and writer
Excel (XLSB/XLSX/XLSM/XLS/XML) and ODS spreadsheet parser and writer (extended to enable read/write of cell formats with xlsx files)
xlsx + style = xlsx-color