The Startup Way - The new book from Eric Ries, author of The Lean Startup
GrowthList - A crowd-sourced list of growth hacks
Summarize - Online Automatic Text Summarization Tool - Autosummarizer is a simple tool that help to summarize text articles extracting the most important sentences.
GrowthHackers Projects - Growth collaboration software for teams 📈
Bookstash - Bookstash is a free library of curated summaries from top nonfiction books.
Marketing Examples - A gallery of real world marketing case studies. Updated every day.