Chart.js - Easy, object oriented client side graphs for designers and developers.
Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.
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.
Instantly - Build your own infinitely scalable cold email outreach system with Instantly.
Google Charts - Interactive charts for browsers and mobile devices.
Snov.io - Sales engagement on autopilot.