XLSX Viewer: XLS Reader & Spreadsheets Editor app with XLSX file reader can be your default All-in-1 XLS App and directly open the XLS / CSV / XLSX / XLSM / Sheets from the file manager, email container, or web in this XLS sheet reader without opening the application. The XLSX Viewer: Sheets editor app is the most efficient office productivity tool to read xlsx sheets, xls files. XLS file viewer & Editor is developed for worldwide users. XLS or XLSX sheets app feature and formatting options mak