Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Chart.js - Easy, object oriented client side graphs for designers and developers.
ProtoPie - ProtoPie is the easiest tool used to turn your UI/UX design ideas into highly interactive prototypes for mobile, desktop, web, all the way to IoT.
Famous Engine - The Famous Engine is a free and open source JavaScript rendering engine.