A very large library of premade charts for web. Probably the largest I've seen. Less customizable than chart.js, and D3 is more of a rendering library than a charting library.

I'm surprised by your claim of it being less customizable than chart.js, it has been very flexible from my experience.

It could rival d3 with a lot of customization and a worse DX from what I've seen: It's essentially a good amount of defaults, but you can override and replace essentially anything.

I'd forgotten all about this library, its certainly come a long way!

Can you name one thing that chart.js does that Apache ECharts cannot do?

I wrote a bit about that here: https://preset.io/blog/2021-4-1-why-echarts/

Thanks! I actually use Superset and echarts does work well on it