C3.js is described as 'D3-based reusable chart library that enables deeper integration of charts into web applications' and is an website in the Development category. There are more than 25 alternatives to C3.js, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, Mac, Windows and Linux. The best alternative is D3.js, which is both free and Open Source. Other great sites and apps similar to C3.js are Plotly (Freemium, Open Source), Chart.js (Free, Open Source), Frappé Charts (Free, Open Source) and Highcharts (Free Personal).
D3 allows you to bind arbitrary data to a Document Object Model (DOM), and then apply data-driven transformations to the document. For example, you can use D3 to generate an HTML table from an array of numbers.
Frappé Charts is a simple, responsive, modern charts library for the web with zero dependencies and a roughly 15k gzipped file size. From the makers of ERPNext, the library offers a fast alternative with minimal effort needed to visualize data in sleek charts.
The Google Charts is an extremely simple tool that lets you easily create a chart from some data and embed it in a webpage. You embed the data and formatting parameters in an HTTP request, and Google returns a PNG image of the chart.
Vega-Lite provides a higher-level grammar for visual analysis, comparable to ggplot or Tableau, that generates complete Vega specifications. Vega-Lite specifications consist of simple mappings of variables in a data set to visual encoding channels such as x, y, color, and size.