CanvasJS - HTML5 JavaScript, jQuery, Angular, React Charts for Data Visualization
ChartBlocks - Import data, design and share a chart in minutes. Or seconds via the API.
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.
Plotly - Low-Code Data Apps
RAWGraphs - RAWGraphs is an open source app built with the goal of making the visualization of complex data...
PykCharts.js - Well designed d3.js charting without the complexity of d3.js