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.
Google Charts - Interactive charts for browsers and mobile devices.
Highcharts - A charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application
Chart.js - Easy, object oriented client side graphs for designers and developers.
Unused CSS - Easily find and remove unused CSS rules
Plotly - Low-Code Data Apps