From the readme:
Graphene is a realtime dashboard & graphing toolkit based on D3 and Backbone.
It was made to offer a very aesthetic realtime dashboard that lives on top of Graphite (but could be tailored to any back end, eventually).
Combining D3’s immense capabilities of managing live data, and Backbone’s ease of development, Graphene provides a solution capable of displaying thousands upon thousands of datapoints in your dashboard, as well as presenting a very hackable project to build on and customize.
Is it chance that interest on graph databases and graph display mechanisms have gone up at the same time?