Commercial Libraries

• amCharts - Three libraries for traditional charts, stock, and maps. Features a hand-drawn style theme option.
• JSCharting - Integrated suite of charting libraries with traditional charts types plus maps, stock, Gantt, grid and org charts in one package.
• Kendo UI - Premium charting library with native UI components available for Angular, React, and Vue.
• Highcharts - A series of charting libraries for a variety of uses. Can be compatible back to IE6.
• AnyChart - Set of products for charting different types of data. Has a special Oracle Apex integration option.

Data Visualization Resources

React

• Junk Charts - Dataviz critic (and Columbia professor) Kaiser Fung breaks down data visualizations to identify what is wrong and recommends ways to make them better.
• Evergreen Data - Information and opinions on presenting data more effectively.
• Well Formed Data - Thought pieces on information visualization and design by Moritz Stefaner previously of the World Economic Forum.
• Dataviz Catalogue - A place to go when you're wondering which chart type is best. A project by Severino Ribecca.
• Visualizing Data - Dataviz consultant Andy Kirk compiles examples, resources, and reference materials on the subject of charting and visualization.
• The Functional Art - Noted data visualization author and professor Aberto Cairo's blog on dataviz trends and best practices.

Framework-Specific Libraries

Angular

• n3-charts - Easy to use library written with AngularJS, rendering charts with D3.

jQuery

• JQuery-linechart - Simple and lightweight library for creating line charts
• jqPlot - Open source jQuery plugin for drawing charts. Contains many commonly used features but may use different naming conventions for these items.

Lit-html

• lit-line - {fast, small, interactive, fully responsive} Line Chart web component build on top of lit-html.

React

• Potion - Low-level building blocks for constructing animated visualizations with React & D3.
• nivo - React components to easily build dataviz apps, built on top of D3.
• react-vis - a composable visualization system by Uber
• react-chart-js - React wrapper for Chart.js
• react-d3 - Charting library that relies on React for generating SVG markup and d3 to calculate path values.
• react-muze - React wrapper for muze (free data visualization library for creating exploratory data visualizations in browser, using WebAssembly)
• Victory - A collection of composable React components for building interactive data visualizations

Free and Open Source Libraries

• Charts.css - CSS data visualization framework.
• D3.js - Allows the user to manipulate documents based on data to render charts in SVG.
• uvCharts - JavaScript Charting library built using d3.js
• apexcharts.js - A JavaScript Chart Library with simple API.
• Billboard.js - a fork of C3 that tracks D3 releases more closely.
• Chartist - Simple, lightweight chart library that uses SVG to render the chart, and CSS to style it.
• Chartkick - JavaScript charts with one line of Ruby.
• dc.js - D3 Library with crossfilter support
• dygraphs - Interactive zoomable time series charts.
• EJSChart - enterprise ready charting library.
• Graphosaurus - 3D graph viewer powered by WebGL (three.js)
• lightweight-charts - Financial lightweight charts built with HTML5 canvas
• Plotly - Built on top of d3 and stack.gl, allowing users to create basic charts and SVG maps.
• Plottable - Library with OOP style syntax to build charts.
• QuickChart - Web API that renders static chart images.
• sigma.js - Graphs / Network diagram library built with canvas.
• Smoothie Charts - JavaScript charts for realtime streaming data.
• μPlot - A small (< 25 KB min), fast chart for time series, lines, areas, ohlc & bars.
• ECharts - A powerful charting and visualization library for browser.
• C3.js - D3 based reusable chart library.
• reaflow - Modular diagram engine for build static or interactive editors.

Free Libraries

• Google Charts - Maps are dialed in (of course) and some cool animation options. Extensive docs and use community (forum).