GrowthList - A crowd-sourced list of growth hacks
Geckoboard - Get to know Geckoboard: Instant access to your most important metrics displayed on a real-time dashboard.
GrowthHackers Projects - Growth collaboration software for teams 📈
metrics.coffee - Freshly ground social metrics delivered to your inbox
Marketing Examples - A gallery of real world marketing case studies. Updated every day.
FinalBoard - Your own private dashboard