Chart Templates is described as 'We enhance free or commercial third-party chart products with new features and emulated charts. We feature thousands of almost ready-to-use charts with Google Charts, jqPlot, Highcharts, AnyChart, FusionCharts, amCharts, CanvasJS, Syncfusion, Shield UI, and the Microsoft ASP'. There are more than 10 alternatives to Chart Templates, 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 Chart Templates are Plotly (Freemium, Open Source), Highcharts (Free Personal), Google Charts (Free) and amCharts (Freemium).
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.
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.