Open Source Airtable Alternative
Data science spreadsheet with Python & SQL
The free and Open Source productivity suite
Fetch the live NSE Stock Option Chain data in Excel
C++/C library to construct Excel .xls files in code.
Organize submission info on writing fellowships w/ this FREE template.
OTC Trading Network
palo olap open office calc plugin for data analysis
an embeddable spreadsheet for your web application
Small, fast Java library for reading and writing CSV files