jQuery - The Write Less, Do More, JavaScript Library.
React Native - A framework for building native apps with React
Raven.js - Raven.js is a standalone JavaScript client for Sentry.
Babel - Babel is a compiler for writing next generation JavaScript.
Composer - Composer is a tool for dependency management in PHP.
ReactiveX - ReactiveX is a library for composing asynchronous and event-based programs by using observable sequences.