22/01/2017

• Next.js : A minimalistic framework for server-rendered React applications
• Flow : Adds static typing to JavaScript to improve developer productivity and code quality.
• ESBench : Shareable JavaScript Benchmarking Built-in ES2015 support, powered by Babel Statistically significant benchmarks, powered by Benchmark.js
• Online javascript beautifier : Beautify, unpack or deobfuscate JavaScript and HTML, make JSON/JSONP readable, etc.
• Cypress : JavaScript End to End Testing Framework. Fast, easy and reliable testing for anything that runs in a browser.