We just updated i[App]Phone with a new statistic.
These are the 100 top developers on App Store by Quantity.
http://www.iappphone.com/stats/#developers_by_quantity
It looks like Brighthouse is the biggest one.
http://www.iappphone.com/developer/304663034/Brighthouse/
Let us know if you can think of any other statistics you would like to see. We will incorporate them 
