- Google Docs & Spreadsheets
 - Allows multiple users to created, edit, and share documents, spreadsheets, and presentations from any web browser. - Microsoft Excel@
- VisiCalc Information
- History and commentary from its creators, Dan Bricklin and Bob Frankston.
- Extentech
- Offers Java SDK-based spreadsheet software downloads.
- Gnumeric Spreadsheet
- Drop in replacement for commercial spreadsheets capable of importing existing Excel, 1-2-3, Applix, Sylk, XBase, and Oleo files.
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