Full-feature Online Spreadsheet In Vanilla JavaScript – Luckysheet
Luckysheet is an open-source, dependency-free JavaScript library to create a full-featured, Google Sheets-like online spreadsheet app.
JavaScript & CSS Google Spreadsheet
Online Spreadsheet App In JavaScript – xspreadsheet
The xspreadsheet library lets you create a JavaScript-based spreadsheet web app to create and edit spreadsheets online. Written in Typescript.
Embed Google Spreadsheet Information Into Your Webpage – gDoc.js
gDoc.js is a JavaScript library which parses your public Google Spreadsheet and allows to inject the data into any place on your webpage.