GrowthList - A crowd-sourced list of growth hacks
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
GrowthHackers Projects - Growth collaboration software for teams 📈
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Marketing Examples - A gallery of real world marketing case studies. Updated every day.
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.