D3.js

We use Plotly (just their open source stuff) for Zulip's user-facing and admin-facing statistics graphs because it's a reasonably well-designed JavaScript graphing library.

If you've tried using D3.js, it's a pretty poor developer experience, and that translates to spending a bunch of time getting the graphs one wants even for things that are conceptually pretty basic. Plotly isn't amazing (it's decent), but it's way better than than D3 unless you have very specialized needs.

Here is my stack on #Visualization. @FusionCharts and Highcharts are easy to use but only free for non-commercial. Chart.js and Plotly are two lovely tools for commercial use under the MIT license. And D3.js would be my last choice only if a complex customized plot is needed.

Several of the visualisations in our Insights pages use D3.js as their engine. D3.js

We use D3 for creating custom charts that aren't available in off-the-shelf libraries D3.js

D3.js is an amazing library for doing visualizations, charts/graphs, etc. We are experimenting with it for metric visualizations, marketing graphs/charts, and basically anywhere we could use this amazing library. D3.js

Charts, charts, charts. Data visualizations are a great way to communicate information to people who need to know it, quickly and concisely. D3.js