In fact, our JavaScript charting library is free for non-profit use and one would need a paid license to use it in any commercial projects, of course. We’ve been working hard to make it so awesomely flexible, as well as easy to use and integrate, and we provide enterprise-grade support, add new features on a regular basis based on our customers’ needs, maintain extensive docs and API reference, and so on. More info on licensing can be found here. Thanks.