I just came across this library thanks to Sergey's F# weekly - it's great to see more work happening on a nice lightweight wrapper for Plotly! With the stand-alone open source release, Plotly seems to be the way to go for HTML charting these days.

Given that there is also the XPlot Plotly wrapper, so I was curious what are the main differences between the two? (Are the APIs very different? Are there some things that XPlot does not handle well?)