GrowthList - A crowd-sourced list of growth hacks
Profile Hopper - Chrome Extension to Growth Hack LinkedIn
GrowthHackers Projects - Growth collaboration software for teams 📈
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Marketing Examples - A gallery of real world marketing case studies. Updated every day.
Sheetsu - Turn Google Spreadsheet into API