GrowthList - A crowd-sourced list of growth hacks
Retweet Picker - Retweet Picker is an online tool that is helping you to select the random winner from Twitter for the giveaways.
GrowthHackers Projects - Growth collaboration software for teams 📈
Tweetdraw - Tweetdraw is an online tool that provides an easy way to pick a winner for a giveaway, having a quick Twitter Quote Draw, Instagram Comment Draw, and Twitter Retweet Draw.
Marketing Examples - A gallery of real world marketing case studies. Updated every day.
Tweet Attacks Pro - The best Twitter tool on the market