DataTip - The fastest way to store & access your critical datapoints.
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
Proof.ink - Proven immutable data stored on the Steem blockchain
Chart.js - Easy, object oriented client side graphs for designers and developers.
Immutable.js - Immutable persistent data collections for Javascript which increase efficiency and simplicity. - immutable-js/immutable-js
Google Charts - Interactive charts for browsers and mobile devices.