RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 15 years old) and has a wealth of features making it an ideal choice to show charts on your website.

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Get the latest version of RGraph (version 6.17) from the download page. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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RGraph can be used for free under the GPL or if that doesn't suit your situation there's an inexpensive (£99) commercial license available.

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A new version of RGraph has been released - version 6.02. A little earlier than I was planning but Googles update to v4 of the Sheets API has forced my hand.

The Sheets connector wasn't working any longer so I had to update it (all three copies!) and there's also a few other minor things that you can read about on the changelog page:

https://www.rgraph.net/changelog.html

You can download RGraph as usual from the download page:

https://www.rgraph.net/download.html#stable