The Open Mic Chart was made by @andybets for his SteemReports.com website.
The other site he's working on is Multi.Tube and that is the basis of the app we are working on for the Open Mic app. I'll let you know when it is ready, but for now, the chart you mentioned is a great way to see all the weekly Open Mic entries.
Thank you for that information, Do you happen to know what the Letters mean on the charts? RV, SPV ?