Two.js is a two-dimensional drawing api geared towards modern web browsers. It is renderer agnostic enabling the same api to draw in multiple contexts:
Paper.js is an open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface.
Yako.js is a tiny DOM-less graph library, build for fast front end and server side rendering in CommonJs pattern. This library is intend to generate light weight and simple SVG graphs, and is more performable compare to highcharts / flot / c3 / d3 when front end matters.
twgl.js library's sole purpose is to make using the WebGL API less verbose.
Chartinator is a jQuery plugin that transforms data from HTML tables, Google Sheets and js arrays into charts using Google Charts.
A tutorial about how to create a gorgeous, interactive animated pie chart by using HTML5 canvas element, CSS3 and jQuery.
ZingChart jQuery wrapper is a lightweight extension of the ZingChart library that allows anyone to create, modify, and interact with charts entirely with jQuery syntax and functionality.
ECharts is a comprehensive charting library offering a painless way of adding interactive charts to your products.
ECharts currently supports line, column, scatter, pie, radar, candlestick, chord, gauge, funnel, map and force-directed chart types, many of these can be combined in one chart.
Charted is a charting tool that produces automatic, shareable charts from any data file.
MetricsGraphics.js is a library optimized for visualizing and laying out time-series data. It provides a simple way to produce common types of graphics in a principled, consistent and responsive way.
The library currently supports line charts, scatterplots and histograms as well as features like rug plots and basic linear regression.