RGraph is described as 'HTML5 canvas graph library. It uses features that became available in HTML5 (specifically, the CANVAS tag) to produce a wide variety of graph types: bar chart, bi-polar chart (also known as an age frequency chart), donut chart, funnel chart, gantt chart, horizontal' and is an app. There are more than 50 alternatives to RGraph for a variety of platforms, including Web-based, Windows, Mac, Linux and Self-Hosted apps. The best RGraph alternative is Matplotlib, which is both free and Open Source. Other great apps like RGraph are D3.js, GnuPlot, RAWGraphs and Plotly.