Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Instaaa - Promote your startup using AI-powered outreach
TweetFavy - The Growth Hacking Tool for Twitter. Marketing automation software / Growth Hacking tool designed to grow your social media influence and attract real, targeted and engaged Twitter followers.
Press Hunt - Press Hunt saves you hundreds of hours by aggregating data on almost 400,000 journalists and reporters in one place, complete with their writing interests and contact info.
Primer - CSS toolkit and guidelines that power GitHub
pressfarm - Pressfarm helps entrepreneurs find journalists to write about their startups.