It depends what you mean by real time, but GOES is pretty sick:
https://www.star.nesdis.noaa.gov/GOES/sector.php?sat=G18§or=psw&refresh=true
Updates every five minutes.
Then of course MODIS, VIIRS, Landsat, others. Those don't have the nice viewer though like this, and yeah, there is some processing, but if you grab through GEE you can get some "preprocessed" results.
Edit (I think this will work?):
This image should stay updated to the "live" view of the western GOES satellite: