Google Sheets Python API
Open-source, clean-room spreadsheet (Microsoft Excel-style) in Rust
PowerShell module to import/export Excel spreadsheets, without Excel
Hierarchical spreadsheet: a free-form data organizer
Main engine of the IronCalc ecosystem
Open Source Airtable Alternative
Javascript plugin to create web-based tables & spreadsheets
Open source web spreadsheet
A terminal spreadsheet multitool for discovering and arranging data
A standalone, portable Ada package for producing Excel spreadsheets
Library modules for creating ODF documents.
OTC Trading Network
an embeddable spreadsheet for your web application