Bottery : Bottery is a syntax, editor, and simulator for prototyping generative contextual conversations modeled as finite state machines.
Anime.js : Anime.js is a fast, multipurpose and lightweight JavaScript animation library with a simple, yet powerful API.
It works with CSS properties, SVG, DOM ...
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
Flume : A React-powered node editor and runtime engine. Build apps that are resilient to changing requirements by modeling your business logic as a JSON graph...
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)