Equity Calculator - Figure out what your equity is worth
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
EquityBee - Get the funding you need to exercise your stock options
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.