Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Bootstrap Money - How much money can you make selling software?
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Financial Independence Calculator - How early can you 🍹retire if you move to another place?
Apple Numbers - Numbers lets you build beautiful spreadsheets on a Mac, iPad, or iPhone — or on a PC using iWork for iCloud. And it’s compatible with Apple Pencil.
Omni Calculator - Helping you make rational decisions, one calculation at a time.