> They’re not capable of showing the volume of data our users would like to see (100’s of thousands of points, minimum)

Yes they are! For example using WebGL, Plotly.js’s pointcloud scatter does 1 millions+ points with @plotlygraphs http://codepen.io/monfera/pen/BLjJVZ or Plotly.js parcoords does 100k lines

> They lack key chart types (e.g. parallel axis charts)

Many more publication-quality, high-performance chart types at:


> They are not easily extendable when we need to add or enhance features

Plotly.js has dozens of community contributors that have read the open-source codebase and enhanced the library through GitHub:


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