SpreadJS

Enterprise JavaScript spreadsheet component with 500+ Excel functions, pivot tables and XLSX import and export.

Visit SpreadJS Docs

More in Spreadsheet APIs

Google Sheets API

Read and write spreadsheets.

Microsoft Excel (Graph)

Excel workbook API.

SheetJS

Read and write spreadsheets in JavaScript.

openpyxl

Python Excel library.

Information is summarised in our own words and may be out of date; check the vendor's site for current terms and prices. Not affiliated with SpreadJS. Suggest a correction.

Category	Spreadsheet APIs
Authentication	API key
Pricing	Paid
Website	https://developer.mescius.com/spreadjs
Docs	https://developer.mescius.com/spreadjs/docs/overview
Last checked	2026-10-14
As JSON	/api/v1/directory/spreadjs.json