[Spreadsheet File Format APIs for JavaScript Open Source JavaScript APIs for Spreadsheets Read, Write & Manipulate Microsoft Excel files via JavaScript. Spreadsheet File Format APIs for JavaScript Include SheetJS JS-XLSX Pure JavaScript implementation allows software developers to export, read and write the most popular format of Excel spreadsheets inside web browsers and servers. x-spreadsheet Open Source JavaScript Excel XLSX Library allows generating Excel & Google Sheets style spreadsheet. It allows inserting sheets, manage rows/columns & more. Better-xlsx Open Source JavaScript Excel XLSX Library that allows developers to read or write spreadsheet file, manage cell & row, toTable, from Table & so on. SlickGrid Open Source lightning fast JavaScript Spreadsheet Component for Speedy rendering, Column autosizing based on jQuery and jQueryUI. NodeOffice Open Source lightning fast JavaScript Spreadsheet component for speedy rendering, Column autosizing based on jQuery and jQueryUI. xlsx-populate Open Source JavaScript API to Populate Excel data from a sheet, add/edit/move/delete worksheet, XLSX agile encryption or decryption and much more.]