I'd like to know of a similar website also.

As to your question, if you are looking for nonstops from North American cities to/from PVG, operating own metal (excluding codeshares), I think there is:

EWR: CO
JFK: MU (China Eastern)
DTW: Delta
ORD: UA, AA
SFO: UA
LAX: MU
YVR: MU
YYZ: AC

PVG is not my usual airport, so maybe FT'ers who've scoured the universe for the same nonstop options can chime in here. Your options go up considerably if you don't mind a connection in Tokyo or Seoul, maybe HKG. As a veteran of countless China-Eastern US flights, I regret to inform you that it often entails 24 hours of travelling in each direction, especially if you don't live in a gateway city.