Explorable Visual Analytics: Visualize, Understand Large Complex Datasets
cs.cmu.edu
cs.cmu.edu
By default, it connects to a simulation data source which has limited functionality. If you have a prometheus database, you should point it at that (note: I never see your data - it remains local to your browser).
It's still rough around the edges, quite buggy and there is lots of optimization work to do, but it's getting useful I think.