A pure PHP library for reading and writing spreadsheet files
Open Source Airtable Alternative
Javascript plugin to create web-based tables & spreadsheets
Google Sheets Python API
The free and Open Source productivity suite
C++ library for creating XLSX files for MS Excel 2007 and above.
Get Live Price data for NIFTY 50 and Bank NIFTY Stocks in Excel
Python spreadsheet application
stylefmt is a tool that automatically formats stylesheets
Lays out dependencies (links) between Excel files in a visual graph
Compares two Excel files on a cell-by-cell basis and dumps differences
Perl utility that modifies GnuCash Trasnaction Exports
C++/C library to construct Excel .xls files in code.
A lightning fast JavaScript grid/spreadsheet
an embeddable spreadsheet for your web application
Small, fast Java library for reading and writing CSV files