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This.

For custom stuff I use D3, but for the "standard"-charts I use Highcharts.

Edit: Seems like Chartjs is MIT, Highcharts is only free for non-commercial.

On the custom side, d3.js has more chart types currently supported, but we've added more with this release and made extending / creating new chart types 100x easier. Previously custom work was much easier with d3, but the gap is now significantly reduced.

Can you expand on this a bit? From skimming the documentation this still seems firmly in the camp of a few charts with a lot of options, as opposed to d3's do what you wish model.

There is a ton of documentation yet, but here's a link to what there is: http://www.chartjs.org/docs/#advanced-usage-writing-new-char...

It certainly isn't to the d3 level yet, but almost everything is exposed and extensible with the new API so you can create most any chart you can think of.

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