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
Excalideck - An app for authoring slide decks that look hand-drawn.
Famous Engine - The Famous Engine is a free and open source JavaScript rendering engine.
Angle - Angle lets you quickly create app presentations using our massive library of 5000+ mockups in Figma, Sketch and XD.
Chart.js - Easy, object oriented client side graphs for designers and developers.