Ubersuggest is a free SEO tool that specializes in generating new keyword ideas. Originally founded as a tool that scraped Google Suggest terms, Ubersuggest was recently acquired by entrepreneur Neil Patel, who has since expanded the feature set significantly.

Awesome APIs is a collection of public APIs

Human behavior is programmable. You just need to know the code. Here we introduce Behavioral Design: a design framework for programming human behavior. In this book we focus on a particular area of behavior design: Habits. How they work and how your product can use Behavioral Design to become a daily habit for your users.