"Password authentication for web and mobile apps" is a book for developers who want to learn how to implement password authentication correctly and securely. It answers many questions that everyone has when writing their system or learning an auth framework.
I Write Like (https://iwl.me), my popular writing style analyzer now has apps for iPhone, iPad and Mac. It uses Bayesian classifier to analyze your text and gives famous author similarities.
Calcish is a universal tool for macOS that allows you to quickly do visual calculations, run JavaScript code, and chat with local or remote AI easily using the notebook interface.