This is a work-in-progress diagram meant as an update to the one on the PyViz.org Overviews page which is an adaptation by Nicolas P. Rougier of a diagram presented by Jake VanderPlas in a PyCon 2017 talk.
Note: The diagram first shows up with all tags showing, so it looks a bit insane... the tag menu lets you turn things on and off, so try just the mpl tag to see just what matplotlib connects to, etc :)