Glad to see Echarts getting the recognition it deserves. It is arguably the best open-source visualization library out there.

Here are some points others haven't mentioned:

(a) Uses canvas by default. Faster than any other library I've used.

(b) Extremely flexible. Want to write your own widget on top of the graphs (eg., a customized tooltip). Possible!

(c) Provides a lot of metadata. Want to get the position of a point in the rendered chart, to use in your code? Entirely possible!

(d) Works really well when importing into legacy web apps. They even provide an option to get a customized build on their site.

(e) Very good at handling streamed data. The animation is very smooth between data changes.

I've been using it for almost 7 years now for various production and personal projects, and it's still my go-to library. Their docs have come a long way since then.

They do have long standing bugs that get annoying, e.g, dealing with 0 when using log scales, provided there are workarounds for it. I haven't noticed any blocking bugs for most common usecases.

> Glad to see Echarts getting the recognition it deserves.

Why is it so rarely mentioned in chart libraries comparisons? Its not even listed on the Wikipedia page for JavaScript chart libraries. I discovered it by chance through Apache Superset.