apps-script-spreadsheet-json

? SheetJS Spreadsheet Data Toolkit -- New home https://git.sheetjs.com/SheetJS/sheetjs

Go language library for reading and writing Microsoft Excel? (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets

? The Next Gen Airtable Alternative: No-Code Postgres

Luckysheet is an online spreadsheet like excel that is powerful, simple to configure, and completely open source.

The project has been migrated to @wolf-table/table https://github.com/wolf-table/table

??? APITable, an API-oriented low-code platform for building collaborative apps and better than all other Airtable open-source alternatives.

A pure PHP library for reading and writing spreadsheet files

Univer is a full-stack framework for creating and editing spreadsheets, documents, and slides on both web and server.

Grist is the evolution of spreadsheets.

A terminal spreadsheet multitool for discovering and arranging data